CN103634072A - Information transmission method and apparatus - Google Patents

Abstract

An information transmission method and an information transmission apparatus are provided. The information transmission method includes the following steps that: first information from a first transmission end and second information from a second transmission end are obtained; coding processing is performed on the first information and the second information so as to generate third information, wherein the third information includes first codeword information corresponding to the first information, second codeword information corresponding to the second information, and check bit information; modulation processing is performed on the third information so as to generate fourth information; and the fourth information is transmitted to the first transmission end and the second transmission end so that the first transmission end can obtain the second information after the first transmission end performs decoding demodulation processing on the fourth information according to the first information, and the second transmission end can obtain the first information after the second transmission end performs decoding demodulation processing on the fourth information according to the second information. Coding processing is performed on compounded information from the two transmission ends, and therefore, the accuracy of decoding and the reliability of the demodulation processing can be improved, and system performance can be effectively improved.

Description

The method and apparatus of transmission information

Technical field

The present invention relates to the communications field, and more specifically, relate to the method and apparatus of transmission information.

Background technology

At present, in wireless relay transmission technology, two source nodes (for example, base station and subscriber equipment) can carry out the mutual of information by via node.For example, in wireless both-way trunk transmission system, transmitting procedure is divided two time slots (in other words, two stages) carry out, at the first time slot, two source nodes in other words to via node transmission information separately (simultaneously, signal), via node receives the information of mixing.At the second time slot, via node can be based on for example, and network coding technique, processes (for example, coding, modulation etc.) to the information receiving, then its broadcast transmission is gone out, and now, two source nodes transfer destination node to.In the broadcast singal of via node, comprise the information sending in the first stage with destination node,, be called side information (Side-information) here.And at the second time slot, destination node can be utilized side information, from the broadcast singal of via node, detect or decode the information that the other side sends at the first time slot, realized information exchange.Thereby, only need two time slots just can complete information exchange, greatly saved time resource, increase substantially the availability of frequency spectrum of whole system.

But, in real network, for example, because the transmitted power of two source nodes is different (, in real system, base station transmitting power 46dBm, and terminal transmit power is in 24dBm left and right), or, two source nodes are different (to the distance of via node, two source nodes are different to the large scale attenuation of each self-channel of via node), or, two source nodes are different to the multipath fading on each self-channel of via node, cause two source nodes different to the channel status quality of via node, and then caused two source nodes not mating to two link transmission speed of via node, such as base station can adopt quadrature amplitude (QPSK to via node, Quadrature Amplitude Modulation) modulation, and user can only adopt two-phase PSK (BPSK to via node, Binary Phase Shift Keying) modulation.Under this scene, the bit number that base station and user are transmitted in same time to via node is inconsistent.This is inconsistent, can be referred to as asymmetry.

Therefore, for example, can consider that the network code principle based on bit XOR is processed,, via node the first time slot receive two source nodes (for example, base station and subscriber equipment, below, for the ease of understanding, be called base station and subscriber equipment) information (signal), and will recover (for example, demodulation, decoding etc.) out from the information bit A of base station with from the information bit B of subscriber equipment by multi-user association demodulation coding method for example, utilize bit xor operator XOR(to be denoted as

) information bit A and information bit B are carried out to XOR processing, after merging, obtain

thereafter, by channel encoder, bit interleaver pair carry out modulation treatment, be modulated into symbol (signal), at the second time slot, broadcast this signal.After base station and subscriber equipment are received respectively the signal of via node broadcast, this signal is carried out to demodulation, deinterleaving and decoding processing and obtain

base station can be informed in the information bit A that the first time slot sends, so base station can further utilize bit XOR, from

in recover B.In like manner, subscriber equipment can be informed in the information bit B that the first time slot sends, so subscriber equipment can further utilize bit XOR, from

in recover information bit A.Thereby realized the information interaction in two time slots between base station and subscriber equipment.Owing to adopting the network code mode of bit XOR, need to be consistent from the message length of base station and subscriber equipment,, information bit A is consistent with the length of information bit B, therefore when wireless both-way trunk network is nonsymmetric channel, the length of information bit A and information bit A is inconsistent, for example, in the situation that the length of information bit B is greater than the length of information bit A, via node mends 0 need to information bit A, generates [A, 0], so that information bit A is consistent with the length of information bit B, and then carry out bit XOR with information bit B.

Again for example, can consider that the network code based on superimposed code processes.; via node receives the information (signal) of base station and subscriber equipment transmission at the first time slot; and will recover information bit A and information bit B by for example multi-user association demodulation coding method, and respectively information bit A is become to information x with information bit B coded modulation _aand x _b, and based on superimposed code (Superposition coding), by x _aand x _bsynthesize information x _r, and broadcast this x at the second time slot _r.The information bit A of its transmission can be known in base station, and its coded modulation is become to information x _athereby, can obtain x based on interference elimination treatment _b, carry out again afterwards demodulation, deinterleaving and decoder, recover object information bit B.In like manner, base station B can be known the information bit B of its transmission, and its coded modulation is become to information x _bthereby, can obtain x based on interference elimination treatment _a, carry out again afterwards demodulation, deinterleaving and decoder, recover object information bit A.Thereby realized the information interaction in two time slots between base station and subscriber equipment.

But, in above technology, via node cannot effectively utilize side information to encode and modulation, causes base station and/or subscriber equipment cannot effectively utilize side information to carry out demodulation process, that is, cannot more effectively utilize the reliability that side information improves demodulation process.

Summary of the invention

The embodiment of the present invention provides a kind of method and apparatus of transmission information, can improve the reliability that coded modulation is processed, and effectively improves systematic function.

First aspect, provides a kind of method of transmission information, and the method comprises: obtain from the first information of the first transmission ends with from the second information of the second transmission ends; To the processing of encode of this first information and this second information, to generate the 3rd information, wherein, the 3rd information comprises first codeword information corresponding with the described first information, and corresponding the second codeword information and the check digit information of described the second information; The 3rd information is carried out to modulation treatment, to generate the 4th information; To this first transmission ends and this second transmission ends, send the 4th information, so that this first transmission ends is obtained this second information after the 4th information being carried out to decoding demodulation process according to this first information, this second transmission ends is obtained this first information after the 4th information being carried out to decoding demodulation process according to this second information; Wherein, this carries out modulation treatment to the 3rd information, comprising: this first codeword information and the second codeword information are carried out to combined modulation processing; This check digit information is carried out separately to modulation treatment.

In a kind of possible execution mode, the first planisphere is for the modulation treatment of this first transmission ends to this first information, the second planisphere is for the modulation treatment of this second transmission ends to this second information, and this carries out combined modulation to this first codeword information and the second codeword information and processes and comprise: according to the 3rd planisphere, this first information and the second information are carried out to combined modulation processing, the order of modulation of the 3rd planisphere is the larger side of numerical value in the order of modulation of this first planisphere and the order of modulation of this second planisphere, each sign mapping in the 3rd planisphere comprises the second son sign mapping that is used to indicate the first son sign mapping of this first information and is used to indicate this second information, this is modulated and comprises separately this check digit information: according to the 4th planisphere, this check digit information is carried out to modulation treatment, the order of modulation of the 4th planisphere be the order of modulation of this first planisphere and the order of modulation of this second planisphere and.

In conjunction with first aspect and the possible execution mode of the first, in the possible execution mode of the second, in the identical sign mapping of this first son sign mapping, respectively this second son sign mapping is Gray code mapping each other, in the identical sign mapping of this second son sign mapping, respectively this first son sign mapping is Gray code mapping each other.

In conjunction with first aspect, execution mode and the possible execution mode of the second that the first is possible, in the third possible execution mode, the minimum euclidean distance that this first son sign is shone upon between identical constellation point is maximization distance, and the minimum euclidean distance that this second son sign is shone upon between identical constellation point is maximization distance.

In conjunction with first aspect, possible execution mode and the third the possible execution mode of execution mode, the second that the first is possible, in the 4th kind of possible execution mode, this,, to the processing of encode of this first information and this second information, comprising: to this first information and this second information via the systematic code processing of encoding.

Second aspect, a kind of method of transmission information is provided, the method comprises: the first transmission ends sends the first information to via node, so that this via node is to this first information first codeword information corresponding with this first information with generation after the processing of encoding from the second information of the second transmission ends, second codeword information and the check digit information corresponding with this second information; Receive the 4th information that this via node sends, the 4th information comprises this via node to this first codeword information and the second codeword information is carried out rear the first sub-information generating of combined modulation processing and this via node carries out separately the second sub-information generating after modulation treatment to this check digit information; According to this first information, this first sub-information is carried out to demodulation process; This second sub-information is carried out to demodulation process, with according to this first sub-information after demodulation process and this second information of the second sub-acquisition of information after demodulation process.

In a kind of possible execution mode, the first planisphere is for the modulation treatment of this first transmission ends to this first information, the second planisphere is for the modulation treatment of this second transmission ends to this second information, the 3rd planisphere is for carrying out demodulation process to this first sub-information, the order of modulation of the 3rd planisphere is the larger side of numerical value in the order of modulation of this first planisphere and the order of modulation of this second planisphere, the 4th planisphere is for carrying out demodulation process to this second sub-information, the order of modulation of the 4th planisphere is the order of modulation of this first planisphere and the order of modulation sum of this second planisphere, and this is according to this first information, this first sub-information is carried out to demodulation process, comprise: according to this first information, the 3rd planisphere is carried out to the first processing, so that only retain the first son sign mapping sign mapping corresponding with this first information in the 3rd planisphere, this the first son sign mapping is in this sign mapping, to be used to indicate the part of this first information, according to the second son sign mapping in the sign mapping retaining, this first sub-information is carried out to demodulation process, this second son sign mapping is in this sign mapping, to be used to indicate the part of this second information, and this carries out demodulation process to this second sub-information and comprises: according to the 4th planisphere, this second sub-information is carried out to demodulation process.

In conjunction with second aspect and the possible execution mode of the first, in the possible execution mode of the second, in the identical sign mapping of this first son sign mapping, respectively this second son sign mapping is Gray code mapping each other, in the identical sign mapping of this second son sign mapping, respectively this first son sign mapping is Gray code mapping each other.

In conjunction with second aspect, execution mode and the possible execution mode of the second that the first is possible, in the third possible execution mode, the minimum euclidean distance that this first son sign is shone upon between identical constellation point is maximization distance, and the minimum euclidean distance that this second son sign is shone upon between identical constellation point is maximization distance.

In conjunction with second aspect, the execution mode that the first is possible, the execution mode that the second is possible and the third possible execution mode, in the 4th kind of possible execution mode, the first planisphere is for the modulation treatment of this first transmission ends to this first information, the second planisphere is for the modulation treatment of this second transmission ends to this second information, the 4th planisphere is for carrying out demodulation process to the 4th information, the order of modulation of the 4th planisphere is the order of modulation of this first planisphere and the order of modulation sum of this second planisphere, and this is according to this first information, this first sub-information is carried out to demodulation process, comprise: according to this first information, the 4th planisphere is carried out to the second processing, to remove the constellation point that does not comprise the sign mapping corresponding with this first information in the 4th planisphere, according to remaining constellation point, this first sub-information is carried out to demodulation process, and this carries out demodulation process to this second sub-information and comprises: according to the 4th planisphere, this second sub-information is carried out to demodulation process.

The third aspect, provides a kind of device of transmission information, and this device comprises: acquiring unit, for obtaining from the first information of the first transmission ends with from the second information of the second transmission ends, and transmits this first information and this second information to processing unit; Coding unit, for obtain this first information and this second information from this acquiring unit, and to the processing of encoding of this first information and this second information, to generate the 3rd information, wherein, the 3rd information comprise first codeword information corresponding with this first information, with corresponding the second codeword information and the check digit information of this second information; Modulating unit, for the 3rd information is carried out to modulation treatment, to generate the 4th information, and transmits the 4th information to transmitting element; Transmitting element, for obtaining the 4th information from this modulating unit, and send the 4th information to this first transmission ends and this second transmission ends, so that this first transmission ends is obtained this second information after the 4th information being carried out to decoding demodulation process according to this first information, this second transmission ends is obtained this first information after the 4th information being carried out to decoding demodulation process according to this second information; Wherein, this modulating unit specifically for: this first codeword information and the second codeword information are carried out to combined modulation processing; This check digit information is carried out separately to modulation treatment.

In a kind of possible execution mode, the first planisphere is for the modulation treatment of this first transmission ends to this first information, the second planisphere is for the modulation treatment of this second transmission ends to this second information, and this modulating unit specifically for: according to the 3rd planisphere, this first codeword information and this second codeword information are carried out to combined modulation processing, the order of modulation of the 3rd planisphere is the larger side of numerical value in the order of modulation of this first planisphere and the order of modulation of this second planisphere, each sign mapping in the 3rd planisphere comprises the second son sign mapping that is used to indicate the first son sign mapping of this first information and is used to indicate this second information, according to the 4th planisphere, this check digit information is carried out to modulation treatment, the order of modulation of the 4th planisphere be the order of modulation of this first planisphere and the order of modulation of this second planisphere and.

In conjunction with the third aspect and the possible execution mode of the first, in the possible execution mode of the second, in the identical sign mapping of this first son sign mapping, respectively this second son sign mapping is Gray code mapping each other, in the identical sign mapping of this second son sign mapping, respectively this first son sign mapping is Gray code mapping each other.

In conjunction with the third aspect, execution mode and the possible execution mode of the second that the first is possible, in the third possible execution mode, the minimum euclidean distance that this first son sign is shone upon between identical constellation point is maximization distance, and the minimum euclidean distance that this second son sign is shone upon between identical constellation point is maximization distance.

In conjunction with the third aspect, possible execution mode and the third the possible execution mode of execution mode, the second that the first is possible, in the 4th kind of possible execution mode, this processing unit specifically for to this first information and this second information via the systematic code processing of encoding.

Fourth aspect, a kind of device of transmission information is provided, this device comprises: transmitting element, be used for making the first transmission ends to send the first information to via node, so that this via node is to this first information first codeword information corresponding with this first information with generation after the processing of encoding from the second information of the second transmission ends, second codeword information and the check digit information corresponding with this second information; Receiving element, the 4th information sending for receiving this via node, and transmit the 4th information to processing unit, the 4th information comprises this via node to this first codeword information and the second codeword information is carried out rear the first sub-information generating of combined modulation processing and this via node carries out separately the second sub-information generating after modulation treatment to this check digit information; Processing unit, for obtain the 4th information from this receiving element, and according to this first information, carries out demodulation process to this first sub-information; For this second sub-information is carried out to demodulation process, with according to this first sub-information after demodulation process and this second information of the second sub-acquisition of information after demodulation process.

In a kind of possible execution mode, the first planisphere is for the modulation treatment of this first transmission ends to this first information, the second planisphere is for the modulation treatment of this second transmission ends to this second information, the 3rd planisphere is for carrying out demodulation process to this first sub-information, the order of modulation of the 3rd planisphere is the larger side of numerical value in the order of modulation of this first planisphere and the order of modulation of this second planisphere, the 4th planisphere is for carrying out demodulation process to this second sub-information, the order of modulation of the 4th planisphere is the order of modulation of this first planisphere and the order of modulation sum of this second planisphere, and this processing unit specifically for: according to this first information, according to this first information, the 3rd planisphere is carried out to the first processing, so that only retain the first son sign mapping sign mapping corresponding with this first information in the 3rd planisphere, this the first son sign mapping is in this sign mapping, to be used to indicate the part of this first information, according to the second son sign mapping in the sign mapping retaining, this first sub-information is carried out to demodulation process, this second son sign mapping is in this sign mapping, to be used to indicate the part of this second information, and according to the 4th planisphere, this second sub-information is carried out to demodulation process.

In conjunction with fourth aspect and the possible execution mode of the first, in the possible execution mode of the second, in the identical sign mapping of this first son sign mapping, respectively this second son sign mapping is Gray code mapping each other, in the identical sign mapping of this second son sign mapping, respectively this first son sign mapping is Gray code mapping each other.

In conjunction with fourth aspect, execution mode and the possible execution mode of the second that the first is possible, in the third possible execution mode, the minimum euclidean distance that this first son sign is shone upon between identical constellation point is maximization distance, and the minimum euclidean distance that this second son sign is shone upon between identical constellation point is maximization distance.

In conjunction with fourth aspect, the execution mode that the first is possible, the execution mode that the second is possible and the third possible execution mode, in the 4th kind of possible execution mode, the first planisphere is for the modulation treatment of this first transmission ends to this first information, the second planisphere is for the modulation treatment of this second transmission ends to this second information, the 4th planisphere is for carrying out demodulation process to the 4th information, the order of modulation of the 4th planisphere is the order of modulation of this first planisphere and the order of modulation sum of this second planisphere, and this processing unit specifically for: according to this first information, the 4th planisphere is carried out to the second processing, to remove the constellation point that does not comprise the sign mapping corresponding with this first information in the 4th planisphere, according to remaining constellation point, the 4th information is carried out to demodulation process, and according to the 4th planisphere, this second sub-information is carried out to demodulation process.

According to the method and apparatus of the transmission information of the embodiment of the present invention, by the processing of encoding after the information from two transmission ends is synthetic, can utilize side information to carry out the processing such as demodulation, decoding, thereby can effectively utilize side information, improve the accuracy of decoding and the reliability of demodulation process, effectively improve systematic function.

Accompanying drawing explanation

In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, to the accompanying drawing of required use in the embodiment of the present invention be briefly described below, apparently, below described accompanying drawing be only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is the indicative flowchart of the method for transmission information according to an embodiment of the invention.

Fig. 2 a is the schematic diagram of the planisphere for modulation treatment of one embodiment of the invention, and Fig. 2 b is the schematic diagram of the planisphere for modulation treatment of another embodiment of the present invention.

Fig. 3 is for the schematic diagram of the demodulation process process of one embodiment of the invention is described.

Fig. 4 means the comparison diagram of the method for the transmission information of the embodiment of the present invention and the method for prior art performance simulation result under rayleigh fading channel in symmetric channel situation.

Fig. 5 means the comparison diagram of the method for the transmission information of the embodiment of the present invention and the method for prior art performance simulation result under rayleigh fading channel in nonsymmetric channel situation.

Fig. 6 is the indicative flowchart of the method for transmission information according to another embodiment of the present invention.

Fig. 7 is the schematic block diagram of the device of transmission information according to an embodiment of the invention.

Fig. 8 is the schematic block diagram of the device of transmission information according to another embodiment of the present invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention one son sign mapping embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.

Technical scheme of the present invention, can be applied to various employing wireless relaying techniques (in other words, utilize via node) communication system, for example: IMT-Advanced (IMT-Advanced, International Mobile Telecommunications-Advanced); Global system for mobile communications (GSM, Global System of Mobile communication), code division multiple access (CDMA, Code Division Multiple Access) system, Wideband Code Division Multiple Access (WCDMA) (WCDMA, Wideband Code Division Multiple Access Wireless), GPRS (GPRS, General Packet Radio Service), Long Term Evolution (LTE, Long Term Evolution) etc.

Subscriber equipment (UE, User Equipment), also can be referred to as mobile terminal (Mobile Terminal), mobile subscriber equipment etc., can be through wireless access network (for example, RAN, Radio Access Network) communicate with one or more core net, subscriber equipment can be mobile terminal, as mobile phone (or being called " honeycomb " phone) with there is the computer of mobile terminal, for example, can be portable, pocket, hand-hold type, mobile device built-in computer or vehicle-mounted, they and wireless access network exchange language and/or data.

Base station, can be the base station (BTS in GSM or CDMA, Base Transceiver Station), also can be the base station (NodeB) in WCDMA, can also be the evolved base station (eNB or e-NodeB, evolutional Node B) in LTE, the present invention limit, but for convenience of description, following embodiment be take Node B and is described as example.

Via node can increase a relay cooperative channel on the basis of link that direct transfers, and to expand its coverage, strengthens the performance of Cell Edge User, guarantees the robustness of system.And in embodiments of the present invention, via node can organically combine coding and route, that is, via node forwards after can processing accordingly signal again.By via node, again process to received signal, and guarantee that destination node can recover the information after these processing, thereby prove that in theory which can realize the max-flow transmission of network, strengthens network throughput effectively.

Fig. 1 show from relaying angle of rotation of joint degree, describe according to the method 100 of the transmission information of the embodiment of the present invention, as shown in Figure 1, the method 100 comprises:

S110, obtains from the first information of the first transmission ends with from the second information of the second transmission ends;

S120, to the processing of encode of this first information and this second information, to generate the 3rd information, wherein, the 3rd information comprises first codeword information corresponding with this first information, and corresponding the second codeword information and the check digit information of this second information;

S130, carries out modulation treatment to the 3rd information, to generate the 4th information;

S140, to this first transmission ends and this second transmission ends, send the 4th information, so that this first transmission ends is obtained this second information after the 4th information being carried out to decoding demodulation process according to this first information, this second transmission ends is obtained this first information after the 4th information being carried out to decoding demodulation process according to this second information;

Wherein, this carries out modulation treatment to the 3rd information, comprising:

This first codeword information and the second codeword information are carried out to combined modulation processing;

This check digit information is carried out separately to modulation treatment.

In embodiments of the present invention, transmission ends can be subscriber equipment, can be also base station, the present invention does not limit, below, for the ease of understanding, the transmission ends of take is respectively base station (example of the first transmission ends) and subscriber equipment (example of the second transmission ends) is example, describes.

Specifically, if subscriber equipment and base station need to communicate, with base station, need to send information bit A to subscriber equipment, it is example that subscriber equipment need to send to base station information bit B, and at the first time slot, base station can be according to its channel conditions, with suitable modulation system, for example, can adopt

rank planisphere is modulated information bit A, generates signal a.Equally, subscriber equipment can, according to its channel conditions, with suitable modulation system, for example, can adopt

rank planisphere is modulated information bit B, generate signal b, in embodiments of the present invention, subscriber equipment and base station are carried out method and the process of modulation treatment based on planisphere to information bit can be same as the prior art, here for fear of repeating, the description thereof will be omitted.It should be noted that, in embodiments of the present invention, q ₁(order of modulation) is corresponding with the length of information bit A, for example, if the length of information bit A is 1, q ₁be 1, can be by 2 in planisphere ¹individual constellation point represents this information bit A,, has two kinds of possible sign mappings (0 or 1) that is.Q ₂(order of modulation) is corresponding with the length of information bit A, for example, if the length of information bit B is 2, q ₂be 2, can be by 2 in planisphere ²individual constellation point represents this information bit B,, has four kinds of possible sign mappings (00,11,01 or 10) that is.And, in embodiments of the present invention, q ₁with q ₂can equate, also can be unequal.

Base station can will send to via node to the signal a generating after information bit A modulation, and subscriber equipment will send to via node to the signal b generating after information bit B modulation.

At S110, at the first time slot, via node can receive the signal a(carry information bit A that base station sends), and the signal b(carry information bit B of subscriber equipment transmission).And via node for example can utilize, joint iterative demodulation and decoding method, obtaining information bit A from signal a, obtaining information bit B from signal b, here, as example, and non-limiting, this information bit A can be expressed as $A=\{a_1,...a_i,...,a_{K_1}\},$ This information bit B can be expressed as $B=\{{\mathrm{<figure-callout\; id="1"\; label="b"\; filenames="HDA00002066955300021.png,HDA00002066955300031.png"\; state="\{\{state\}\}">b</figure-callout>}}_1,...b_i,...,b_{K_2}\},$ Wherein, K ₁the length that represents information bit A, a _irepresent i bit in information bit A, K ₂the length that represents information bit B, b _irepresent i bit in information bit B.

At S120, via node can synthesize a bit sequence to information bit A and this information bit B, and to the processing of encoding of the bit sequence after synthetic.

Alternatively, this is encoded to process to this first information and this second information and comprises:

This first information and this second information are carried out to serial to parallel conversion processing, and to synthesize the 5th information, the 5th information comprises this first information and this second information;

To the processing of encoding of the 5th information.

Alternatively, this,, to the processing of encoding of this first information and this second information, comprising:

To this first information and this second information via the systematic code processing of encoding.

Specifically, via node can for example carry out this information bit A and information bit B, and serial to parallel conversion generates input bit sequence C, and as example, and non-limiting, this information bit C can be expressed as $C=\{a_1,...,a_{{\mathrm{<figure-callout\; id="1"\; label="K"\; filenames="HDA00002066955300021.png,HDA00002066955300031.png"\; state="\{\{state\}\}">K</figure-callout>}}_1},{\mathrm{<figure-callout\; id="1"\; label="b"\; filenames="HDA00002066955300021.png,HDA00002066955300031.png"\; state="\{\{state\}\}">b</figure-callout>}}_1,...,b_{K_2}\}.$

In embodiments of the present invention, above-mentioned q ₁, q ₂, K ₁and K ₂there is following relation,

k ₁+ K ₂=K

Thereafter, for example, via node can utilize the low density parity check code (LDPC that code check is K/N, Low Density Parity Check) (example of systematic code) is to the processing of encoding of input bit sequence C, obtain its corresponding code word C ' (example of the 3rd information), as example, and non-limiting, this code word C ' can be expressed as $C^{\&prime;}=\{a_1^{\&prime;},...,a_{{\mathrm{<figure-callout\; id="1"\; label="K"\; filenames="HDA00002066955300021.png,HDA00002066955300031.png"\; state="\{\{state\}\}">K</figure-callout>}}_1}^{\&prime;},{\mathrm{<figure-callout\; id="1"\; label="b"\; filenames="HDA00002066955300021.png,HDA00002066955300031.png"\; state="\{\{state\}\}">b</figure-callout>}}_1^{\&prime;},...,b_{K_2}^{\&prime;},{\mathrm{<figure-callout\; id="1"\; label="p"\; filenames="HDA00002066955300021.png,HDA00002066955300031.png"\; state="\{\{state\}\}">p</figure-callout>}}_1,...,p_i...,p_{N-K}\}.$

In embodiments of the present invention, from code word C ', can isolate the code word corresponding with information bit A and (for example, can be expressed as

) (example of the first codeword information), the code word corresponding with information bit B (for example, can be expressed as

) example of (example of the second codeword information) and check digit P(check digit information), as example, and non-limiting, this check digit P can be expressed as P={p ₁... p _i..., p _n-K, wherein, N represents the length of code word C ', N-K represents the length of check digit P, p _irepresent i bit in check digit P.

Thereafter, via node can be K based on length ₁bit interleaver 1, the code word corresponding with information bit A carried out to Bit Interleave processing, obtain bit sequence π ₁(A); Based on length, be K ₂bit interleaver 2, the code word corresponding with information bit B carried out to Bit Interleave processing, obtain bit sequence π ₂(B); 3 couples of check digit P of the bit interleaver that is N-K based on length carry out Bit Interleave processing, obtain bit sequence π ₃(P).

Thereafter, via node can be by bit sequence π ₁(A) be divided into

part, every part comprises q ₁individual bit, that is, and π ₁(A) the i part bit sequence in can be expressed as

by bit sequence π ₂(B) be divided into

part, every part comprises q ₂individual bit, that is, and π ₂(B) the i part bit sequence in can be expressed as

thereafter, by each part of bit sequence π after dividing ₁and bit sequence π (A) ₂(B) alternative arrangement, obtains bit sequence

(example of the 3rd information), wherein, $Q_i=[{\mathrm{\&pi;}}_{1,(i-1){\mathrm{<figure-callout\; id="1"\; label="q"\; filenames="HDA00002066955300021.png,HDA00002066955300031.png"\; state="\{\{state\}\}">q</figure-callout>}}_1+1}\left(A\right),...,{\mathrm{\&pi;}}_{1,i{q}_1}\left(A\right),{\mathrm{\&pi;}}_{2,(i-1)q_2+1}\left(B\right),...,{\mathrm{\&pi;}}_{2,{\mathrm{iq}}_2}\left(B\right)].$

By the feature of utilizing the rear system bits (above-mentioned the first codeword information and the second codeword information) of systematic code coding and check digit (above-mentioned check digit information) to separate, in the information that can generate from encoding (above-mentioned the 3rd information), isolate first codeword information corresponding with this first information, with corresponding the second codeword information and the check digit information of this second information, thereby, can make full use of two source information each other the feature of side information carry out aftermentioned modulation treatment.

At S130, via node can be to this bit sequence

carry out combined modulation processing.

Alternatively, in embodiments of the present invention, the first planisphere is for the modulation treatment of this first transmission ends to this first information, and the second planisphere is used for the modulation treatment of this second transmission ends to this second information, and

This carries out combined modulation to this first codeword information and the second codeword information and processes and comprise:

According to the 3rd planisphere, this first codeword information and the second codeword information are carried out to combined modulation processing, the order of modulation of the 3rd planisphere is the larger side of numerical value in the order of modulation of this first planisphere and the order of modulation of this second planisphere, and each the sign mapping in the 3rd planisphere comprises the second son sign mapping that is used to indicate the first son sign mapping of this first information and is used to indicate this second information;

This is modulated and comprises separately this check digit information:

According to the 4th planisphere, this check digit information is carried out to modulation treatment, the order of modulation of the 4th planisphere be the order of modulation of this first planisphere and the order of modulation of this second planisphere and.

Alternatively, in the identical sign mapping of this first son sign mapping, respectively this second son sign mapping is Gray code mapping each other,

In the identical sign mapping of this second son sign mapping, respectively this first son sign mapping is Gray code mapping each other.

Alternatively, the minimum euclidean distance that this first son sign is shone upon between identical constellation point is maximization distance,

The minimum euclidean distance that this second son sign is shone upon between identical constellation point is maximization distance.

Specifically, via node can adopt

rank planisphere (example of the 3rd planisphere) is to bit sequence modulate.That is, the combined length of information bit A and information bit B is q ₁+ q ₂, this q ₁+ q ₂individual bit is shared should rank planisphere, therefore, in embodiments of the present invention, can determine this q according to following methods ₁+ q ₂individual bit is at this

sign mapping in the planisphere of rank, that is, with $Q_i=[{\mathrm{\&pi;}}_{1,(i-1){\mathrm{<figure-callout\; id="1"\; label="q"\; filenames="HDA00002066955300021.png,HDA00002066955300031.png"\; state="\{\{state\}\}">q</figure-callout>}}_1+1}\left(A\right),...,{\mathrm{\&pi;}}_{1,i{q}_1}\left(A\right),{\mathrm{\&pi;}}_{2,(i-1)q_2+1}\left(B\right),...,{\mathrm{\&pi;}}_{2,{\mathrm{iq}}_2}\left(B\right)]$ For example, without loss of generality, at this, can suppose q ₂>=q ₁, that is, and max{q ₁, q ₂}=q ₂.

Therefore, first, for one

(Q _iin belong to the part of information bit A), should by possible

with

(Q _iin belong to the part of information bit B) combinatorial mapping at this

in the planisphere of rank, like this should

q in the planisphere of rank ₂individual constellation point has comprised all

the combination of (being used to indicate information bit B) and one

the combination of (being used to indicate information bit A).

Thereafter, by remaining

individual with

combination displacement at this

in the planisphere of rank, like this, at this

in the planisphere of rank, each constellation point comprises individual sign mapping (that is, quantity is identical with minimum order of modulation, identical with minimum information bit length), at this in individual sign mapping, the son sign mapping corresponding with information bit A is different each other, and the mapping of the son corresponding with information bit B sign is different each other.Thereby, in base station and user equipment side, can be according to sending separately information bit, only retain the sign mapping that each constellation point comprises the part corresponding with this information bit (the first son sign mapping), and remove other signs, shine upon, for example, as described in Figure 3, if the sign that constellation point comprises is mapped as 010/101, wherein, first is the corresponding part (the first son sign mapping) of information sending at the first time slot with this transmitting terminal, if the information that this transmitting terminal sends at the first time slot is 1, can remove sign mapping 010.

In embodiments of the present invention, for one

combination, adjusts based on this combination

sign mapping, make this

owning under combination is corresponding the minimum euclidean distance of combination maximizes, that is, as shown in Figure 2 b, sign is mapped as 111(a ₁=1, b ₁=1, b ₂=1) and 011(a ₁=0, b ₁=1, b ₂=1) minimum euclidean distance between a pair of point maximizes (being positioned at diagonal positions).Again for example, for one

combination, adjusts based on this combination

sign mapping, make this owning under combination is corresponding

that is, as shown in Figure 2 b, sign is mapped as 111(a ₁=1, b ₁=1, b ₂=1) point, sign are mapped as 110(a ₁=1, b ₁=1, b ₂=0) point, sign are mapped as 100 point (a ₁=1, b ₁=0, b ₂=0) and sign be mapped as 101 point (a ₁=1, b ₁=0, b ₂=1) minimum euclidean distance between maximizes.

In embodiments of the present invention, after having determined the position of each point, the sign mapping of whole planisphere can be adjusted into Gray code mapping.Specifically, for example, for one combination, adjusts based on this combination

sign mapping, make this

owning under combination is corresponding

that is, as shown in Figure 2 b, sign mapping 111(a ₁=1, b ₁=1, b ₂=1) and sign mapping 011(a ₁=0, b ₁=1, b ₂=1) be Gray code mapping.Again for example, for one

combination, adjusts based on this combination

sign mapping, make this

owning under combination is corresponding

that is, as shown in Figure 2 b, sign mapping 111(a ₁=1, b ₁=1, b ₂=1), sign mapping 110(a ₁=1, b ₁=1, b ₂=0), sign mapping 100(a ₁=1, b ₁=0, b ₂=0) and sign mapping 101(a ₁=1, b ₁=0, b ₂=1) be Gray code mapping.

For example, Fig. 2 a shows q ₁=q ₂=1 o'clock for modulation treatment

one example of rank planisphere, due to q ₁=q ₂=1, therefore, information bit A(is denoted as, a ₁) and information bit B(be denoted as, b ₁) length be 1, that is, information bit A can be expressed as 0 or 1, information bit B can be expressed as 0 or 1.Thereby information bit C(is denoted as, a ₁b ₁) can be expressed as 00,11,01,10.As shown in Figure 2 a, at this

in the planisphere of rank, can identify this information bit C by two constellation point, that is, sign mapping [00] and [11] is all contained in same constellation point, and sign mapping [01] and [10] is all contained in another one constellation point.

Again for example, Fig. 2 b shows q ₁=1, q ₂=2 o'clock for modulation treatment

another example of rank planisphere, due to q ₁=1, q ₂=2, therefore, information bit A(is denoted as, a ₁) length be 1, can be expressed as 0 or 1.Information bit B(is denoted as, b ₁b ₂) length be 2, can be expressed as 00,11,10,01.Thereby information bit C(is denoted as, a ₁b ₁b ₂) can be expressed as 000,111,010,101,011,100,001,110.As shown in Figure 2 b, at this

in the planisphere of rank, can identify this information bit C by four constellation point,, sign mapping [000] and [111] is all mapped in same constellation point, sign mapping [001] and [110] is all mapped in same constellation point, sign mapping [011] and [100] is all mapped in same constellation point, and sign mapping [010] and [101] is all mapped in same constellation point.And, can make [a ₁=0, b ₁b ₂] and [a ₁=1, b ₁b ₂] minimum euclidean distance for maximizing distance (equaling the Euclidean distance of QPSK planisphere), and, can make this

sign in the planisphere of rank is mapped as Gray code mapping, therefore, from this planisphere, obtains the sign mapping [a about information bit A ₁, b ₁b ₂=00], [a ₁, b ₁b ₂=01], [a ₁, b ₁b ₂=10] and [a ₁, b ₁b ₂=11] in equivalence and BPSK planisphere, the sign about information bit A is shone upon.

According to the method for the modulation treatment of the embodiment of the present invention, because base station and subscriber equipment can be known the information bit of its transmission, therefore, can get rid of the sign mapping of the information bit that does not comprise its transmission in each constellation point, thereby can reduce the order of modulation of planisphere, economize on resources and expense, improve efficiency of transmission.

Via node is according to being somebody's turn to do

rank planisphere is to bit sequence can picked up signal X after modulating ¹, X ¹can be expressed as

(altogether

individual transmission symbol).

For example, and via node,, can adopt and have Gray code mapping

rank planisphere (example of the 4th planisphere) is to this bit sequence π ₃(P) modulate, obtain signal X ², X ²can be expressed as $X^2=[x_1^2,...,x_i^2,...,x_{(N-K)/({\mathrm{<figure-callout\; id="1"\; label="q"\; filenames="HDA00002066955300021.png,HDA00002066955300031.png"\; state="\{\{state\}\}">q</figure-callout>}}_1+q_2)}^2]$ (altogether

individual transmission symbol).

At S140, at the second time slot, via node can be by signal X ¹with signal X ²(altogether

individual transmission symbol) broadcast away successively.

At the second time slot, base station and subscriber equipment receive respectively after the signal of via node broadcast, respectively this signal are carried out the processing such as demodulation.

Below, take base station the process of the processing of this signal is described as example.

First, base station receives and X ¹corresponding reception signal Y ¹with and X ²corresponding reception signal Y ², wherein, Y ¹can be expressed as

and base station receives, wherein, Y ²can be expressed as in embodiments of the present invention, base station (comprises and receives signal Y the signal from via node ¹with reception signal Y ²) carry out serial to parallel conversion processing, will receive signal Y ¹with reception signal Y ²distinguish.

Thereafter, base station utilizes it at the first time slot, to send to information bit A and the bit interleaver 1 of via node, generates the information bit π after interweaving ₁(A).

Thereafter, base station utilizes π ₁(A), Y to received signal ¹carry out demodulation, obtain information bit π ₂(B) corresponding soft information.

Specifically, with Y ¹in i receive signal

for example, transmitted bit is corresponding thereto $Q_i=[{\mathrm{\&pi;}}_{1,(i-1)q_1+1}\left(A\right),...,{\mathrm{\&pi;}}_{1,i{q}_1}\left(A\right),{\mathrm{\&pi;}}_{2,(i-1)q_2+1}\left(B\right),...,{\mathrm{\&pi;}}_{2,{\mathrm{iq}}_2}\left(B\right)],$ Base station utilizes known π ₁(A) (specifically, be basis ), select to comprise and this π ₁(A) the sign mapping of corresponding part (the first son sign mapping), and, from this sign mapping, remove and π ₁(A) corresponding part (first son sign mapping), thus can obtain this with corresponding part (the second son sign mapping).Thereby, base station can with

in corresponding part (the second son sign mapping), carry out demodulation process, obtain

for example, as described in Figure 3, if the sign that constellation point comprises is mapped as 010/101, wherein, first is the corresponding part (the first son sign mapping) of information sending at the first time slot with this base station, if the information that this transmitting terminal sends at the first time slot is 1, can remove sign mapping 010, and in 101, remove again first, that is, and determine with

corresponding part is 01.

Fig. 3 shows q ₁=1, q ₂=2 o'clock based on

rank planisphere and side information carry out the indicative flowchart of an example of constellation demodulation.?

in rank planisphere (planisphere 1), as mentioned above, due to q ₁=1, q ₂=2, so information bit A(is denoted as, a ₁) length be 1, can be expressed as 0 or 1.Information bit B(is denoted as, b ₁b ₂) length be 2, can be expressed as 00,11,10,01.Thereby information bit C(is denoted as, a ₁b ₁b ₂) can be expressed as 000,111,010,101,011,100,001,110, at this

in the planisphere of rank, can identify this information bit C by four constellation point,, sign mapping [000] and [111] is all mapped in same constellation point, sign mapping [001] and [110] is all mapped in same constellation point, sign mapping [011] and [100] is all mapped in same constellation point, and sign mapping [010] and [101] is all mapped in same constellation point.Therefore, for example, a sending at the first time slot when base station ₁=0 o'clock, base station only need to be at a ₁in=0 sign mapping (planisphere 2), carry out demodulation, the planisphere 2 QPSK constellation (planisphere 3) with thering is Gray code mapping of equal value.

Thereafter, can to adopt following methods to calculate corresponding in base station

in the soft information of each bit, for example, the soft information that bit is 0 is positive infinity or a very large positive number; Bit is that 1 soft information is minus infinity or a very little negative.

Thereafter, base station can be to obtaining information bit π ₂(B) soft information is carried out deinterleaving processing.

Thereafter, base station can adopt and have Gray code mapping rank planisphere is to this signal Y ²the system of separating is processed, and obtains bit sequence π ₃, and calculate π (P) ₃(P) soft information.Thereafter, to π ₃(P) soft information is carried out deinterleaving processing, and the π after deinterleaving is processed ₃(P) soft information and π ₂(B) soft information is for example delivered to, and decoding is carried out in the decoding of LDPC systematic code, obtains the K after decoding ₂individual information bit

in embodiments of the present invention, the process that the soft information of check digit after process according to deinterleaving base station and the soft information of information bit B are carried out decoding processing can be same as the prior art, and here, for fear of repeating, the description thereof will be omitted.

Above, enumerated the processing procedure of base station to the signal from via node, subscriber equipment is similar to the above process to the processing procedure of the signal from via node, and for fear of repeating, the description thereof will be omitted here.

Fig. 4 shows q ₁=q ₂=1(symmetric channel situation) in, in the LDPC that is 3/4 based on code check when coding,, the wireless both-way trunk network of method of transmission information that uses the embodiment of the present invention is performance simulation result and the comparison diagram of wireless both-way trunk network performance simulation result under rayleigh fading channel that uses the method for the transmission information based on bit XOR under rayleigh fading channel.As shown in Figure 4, in the code word error rate, be 10 ^-5situation under, the method for the transmission information of the embodiment of the present invention is compared with the method for transmission information based on bit XOR, can make signal to noise ratio (Es/No) promote 1dB.Owing to being symmetric channel, so base station and user's decoding performance is consistent.

Fig. 5 shows q ₁=1, q ₂=3(nonsymmetric channel situation) in, in the LDPC that is 3/4 based on code check when coding,, the wireless both-way trunk network of method of transmission information that uses the embodiment of the present invention is performance simulation result and the comparison diagram of wireless both-way trunk network performance simulation result under rayleigh fading channel that uses the method for the transmission information based on bit XOR under rayleigh fading channel.Owing to being nonsymmetric channel, so the decoding performance of base station and subscriber equipment is inconsistent.Simulation result shows, in the code word error rate, is 10 ^-5time, in base station side, the method for the transmission information of the embodiment of the present invention is compared with the method for transmission information based on bit XOR, can make signal to noise ratio promote 1.57dB; And in user equipment side, the method for the transmission information of the embodiment of the present invention is compared with the method for transmission information based on bit XOR, can make signal to noise ratio 0.2dB.

More than enumerated via node utilization

rank planisphere carries out the embodiment of modulation treatment, should be understood that the present invention is not limited thereto, and for example, via node can also utilize

rank planisphere carries out modulation treatment, and now, on planisphere, each point only comprises a sign mapping.

More than enumerated, when transmission ends is respectively subscriber equipment and base station according to the detailed process of the method for the transmission information of the embodiment of the present invention, should be understood that above process is equally applicable to the communication between base station and base station, subscriber equipment and subscriber equipment and other equipment.For example, when the different user in same community wishes to realize fast information interaction by via node, now, can substitute above-mentioned base station with another one subscriber equipment, thereby can effectively improve systematic function.Again for example, information interaction can be carried out by via node in the base station of different districts, now, can substitute above-mentioned subscriber equipment with another one base station, thereby can effectively improve systematic function.

According to the method for the transmission information of the embodiment of the present invention, utilize from the information of two source nodes feature of side information each other, after being synthesized, two information encode, and can utilize side information can effectively expand the Hamming distance of code word.Meanwhile, utilize the feature of systematic code, via node can carry out combined modulation to two information, and utilize side information to optimize the sign mapping of planisphere, make two information when sharing same planisphere, to keep minimum euclidean distance to maximize, and make sign be mapped as Gray code.Thereby even in nonsymmetric channel situation, two source nodes also can make full use of side information at the second time slot and recover exactly information needed separately.

Fig. 6 show for example, from transmission ends (, base station or subscriber equipment) angle, describe according to the method 200 of the transmission information of the embodiment of the present invention, as shown in Figure 6, the method 200 comprises:

S210, the first transmission ends sends the first information to via node, so that this via node is to this first information first codeword information corresponding with this first information with generation after the processing of encoding from the second information of the second transmission ends, second codeword information and the check digit information corresponding with this second information;

S220, receive the 4th information that this via node sends, the 4th information comprises this via node to this first codeword information and the second codeword information is carried out rear the first sub-information generating of combined modulation processing and this via node carries out separately the second sub-information generating after modulation treatment to this check digit information;

S230, according to this first information, carries out demodulation process to this first sub-information;

This second sub-information is carried out to demodulation process, with according to this first sub-information after demodulation process and this second information of the second sub-acquisition of information after demodulation process

In embodiments of the present invention, transmission ends can be subscriber equipment, can be also base station, the present invention does not limit, below, for the ease of understanding, the transmission ends of take is respectively base station (example of the first transmission ends) and subscriber equipment (example of the second transmission ends) is example, describes.

Specifically, if subscriber equipment and base station need to communicate, with base station, need to send information bit A to subscriber equipment, subscriber equipment need to send information bit B to base station be example, at S210, at the first time slot, base station can be according to its channel conditions, with suitable modulation system, for example, can adopt

rank planisphere is modulated information bit A, generates signal a.And base station can will send to via node to the signal a generating after information bit A modulation.

Equally, subscriber equipment can, according to its channel conditions, with suitable modulation system, for example, can adopt

rank planisphere is modulated information bit B, generates signal b.And subscriber equipment will send to via node to the signal b generating after information bit B modulation.

In embodiments of the present invention, subscriber equipment and base station are carried out method and the process of modulation treatment based on planisphere to information bit can be same as the prior art, and for fear of repeating, the description thereof will be omitted here.

At the first time slot, via node can receive the signal a(carry information bit A that base station sends), and the signal b(carry information bit B of subscriber equipment transmission).And via node for example can utilize, joint iterative demodulation and decoding method, obtaining information bit A from signal a, obtaining information bit B from signal b, here, as example, and non-limiting, this information bit A can be expressed as $A=\{a_1,...a_i,...,a_{K_1}\},$ This information bit B can be expressed as $B=\{{\mathrm{<figure-callout\; id="1"\; label="b"\; filenames="HDA00002066955300021.png,HDA00002066955300031.png"\; state="\{\{state\}\}">b</figure-callout>}}_1,...b_i,...,b_{K_2}\},$ Wherein, K ₁the length that represents information bit A, a _irepresent i bit in information bit A, K ₂the length that represents information bit B, b _irepresent i bit in information bit B.

Via node can synthesize a bit sequence to information bit A and this information bit B, and to the processing of encoding of the bit sequence after synthetic.

Specifically, via node can for example carry out this information bit A and information bit B, and serial to parallel conversion (first example of processing), generates input bit sequence C, and as example, and non-limiting, this information bit C can be expressed as $C=\{a_1,...,a_{{\mathrm{<figure-callout\; id="1"\; label="K"\; filenames="HDA00002066955300021.png,HDA00002066955300031.png"\; state="\{\{state\}\}">K</figure-callout>}}_1},{\mathrm{<figure-callout\; id="1"\; label="b"\; filenames="HDA00002066955300021.png,HDA00002066955300031.png"\; state="\{\{state\}\}">b</figure-callout>}}_1,...,b_{K_2}\}.$

In embodiments of the present invention, above-mentioned q ₁, q ₂, K ₁and K ₂there is following relation,

k ₁+ K ₂=K

Thereafter, for example, via node can utilize the low density parity check code (LDPC that code check is K/N, Low Density Parity Check) to the processing of encoding of input bit sequence C, obtain its corresponding code word C ', as example, and non-limiting, this code word C ' can be expressed as

$C^{\&prime;}=\{a_1^{\&prime;},...,a_{{\mathrm{<figure-callout\; id="1"\; label="K"\; filenames="HDA00002066955300021.png,HDA00002066955300031.png"\; state="\{\{state\}\}">K</figure-callout>}}_1}^{\&prime;},{\mathrm{<figure-callout\; id="1"\; label="b"\; filenames="HDA00002066955300021.png,HDA00002066955300031.png"\; state="\{\{state\}\}">b</figure-callout>}}_1^{\&prime;},...,b_{K_2}^{\&prime;},{\mathrm{<figure-callout\; id="1"\; label="p"\; filenames="HDA00002066955300021.png,HDA00002066955300031.png"\; state="\{\{state\}\}">p</figure-callout>}}_1,...,p_i...,p_{N-K}\}.$

In embodiments of the present invention, from code word C ', can isolate the code word corresponding with information bit A and (for example, can be expressed as

), the code word corresponding with information bit B (for example, can be expressed as

) and check digit P, as example, and non-limiting, this check digit P can be expressed as P={p ₁... p _i..., p _n-K, wherein, N represents the length of code word C ', N-K represents the length of check digit P, p _irepresent i bit in check digit P.

Thereafter, via node can be K based on length ₁bit interleaver 1, the code word corresponding with information bit A carried out to Bit Interleave processing, obtain bit sequence π ₁(A); Based on length, be K ₂bit interleaver 2, the code word corresponding with information bit B carried out to Bit Interleave processing, obtain bit sequence π ₂(B); 3 couples of check digit P of the bit interleaver that is N-K based on length carry out Bit Interleave processing, obtain bit sequence π ₃(P).

Thereafter, via node can be by bit sequence π ₁(A) be divided into

part, every part comprises q ₁individual bit, that is, and π ₁(A) the i part bit sequence in can be expressed as by bit sequence π ₂(B) be divided into part, every part comprises q ₂individual bit, that is, and π ₂(B) the i part bit sequence in can be expressed as

thereafter, by each part of bit sequence π after dividing ₁and bit sequence π (A) ₂(B) alternative arrangement, obtains bit sequence

(example of the 3rd information), wherein, $Q_i=[{\mathrm{\&pi;}}_{1,(i-1){\mathrm{<figure-callout\; id="1"\; label="q"\; filenames="HDA00002066955300021.png,HDA00002066955300031.png"\; state="\{\{state\}\}">q</figure-callout>}}_1+1}\left(A\right),...,{\mathrm{\&pi;}}_{1,i{q}_1}\left(A\right),{\mathrm{\&pi;}}_{2,(i-1)q_2+1}\left(B\right),...,{\mathrm{\&pi;}}_{2,{\mathrm{iq}}_2}\left(B\right)].$

By the feature of utilizing the rear system bits (above-mentioned the first codeword information and the second codeword information) of systematic code coding and check digit (above-mentioned check digit information) to separate, in the information that can generate from encoding (above-mentioned the 3rd information), isolate first codeword information corresponding with this first information, with corresponding the second codeword information and the check digit information of this second information, thereby, can make full use of two source information each other the feature of side information carry out aftermentioned modulation treatment.

Thereafter, via node can be to this bit sequence

carry out combined modulation processing.

Specifically, via node can adopt

rank planisphere is to bit sequence

modulate.That is, the combined length of information bit A and information bit B is q ₁+ q ₂, this q ₁+ q ₂individual bit is shared should rank planisphere, therefore, in embodiments of the present invention, can determine this q according to following methods ₁+ q ₂individual bit is at this

sign mapping in the planisphere of rank, that is, with $Q_i=[{\mathrm{\&pi;}}_{1,(i-1){\mathrm{<figure-callout\; id="1"\; label="q"\; filenames="HDA00002066955300021.png,HDA00002066955300031.png"\; state="\{\{state\}\}">q</figure-callout>}}_1+1}\left(A\right),...,{\mathrm{\&pi;}}_{1,i{q}_1}\left(A\right),{\mathrm{\&pi;}}_{2,(i-1)q_2+1}\left(B\right),...,{\mathrm{\&pi;}}_{2,{\mathrm{iq}}_2}\left(B\right)]$ For example, without loss of generality, at this, can suppose q ₂>=1, that is, and max{q ₁, q ₂}=q ₂.

Therefore, first, for one

should by possible

with

combinatorial mapping at this

in the planisphere of rank, like this should

q in the planisphere of rank ₂individual constellation point has comprised all the combination of (being used to indicate information bit B) and one the combination of (being used to indicate information bit A).

Thereafter, by remaining

individual

with combination displacement at this

in the planisphere of rank, like this, at this

in the planisphere of rank, each constellation point comprises

individual sign mapping (that is, quantity is identical with minimum order of modulation, identical with minimum information bit length), at this

in individual sign mapping, the son sign mapping corresponding with information bit A is different each other, and the mapping of the son corresponding with information bit B sign is different each other.

Via node is according to being somebody's turn to do rank planisphere is to bit sequence

can picked up signal X after modulating ¹, X ¹can be expressed as

(altogether

individual transmission symbol).

For example, and via node,, can adopt and have Gray code mapping

rank planisphere is to this bit sequence π ₃(P) modulate, obtain signal X ², X ²can be expressed as $X^2=[x_1^2,...,x_i^2,...,x_{(N-K)/({\mathrm{<figure-callout\; id="1"\; label="q"\; filenames="HDA00002066955300021.png,HDA00002066955300031.png"\; state="\{\{state\}\}">q</figure-callout>}}_1+q_2)}^2]$ (altogether

individual transmission symbol).

Thereafter, at the second time slot, via node can be by signal X ¹with signal X ²(altogether

individual transmission symbol) broadcast away successively.

At S220, at the second time slot, base station receives the signal of via node broadcast, and at S230, the processing such as demodulation are carried out in base station to this signal.

Specifically, base station receives and X ¹corresponding reception signal Y ¹with and X ²corresponding reception signal Y ², wherein, Y ¹can be expressed as

and base station receives, wherein, Y ²can be expressed as

in embodiments of the present invention, base station (comprises and receives signal Y the signal from via node ¹with reception signal Y ²) carry out serial to parallel conversion processing, will receive signal Y ¹with reception signal Y ²distinguish.

Thereafter, base station utilizes it at the first time slot, to send to information bit A and the bit interleaver 1 of via node, generates the information bit π after interweaving ₁(A).

Thereafter, base station utilizes π ₁(A), Y to received signal ¹carry out demodulation, obtain information bit π ₂(B) corresponding soft information.

Alternatively, in embodiments of the present invention, the first planisphere is for the modulation treatment of this first transmission ends to this first information, the second planisphere is for the modulation treatment of this second transmission ends to this second information, the 3rd planisphere is for carrying out demodulation process to this first sub-information, the order of modulation of the 3rd planisphere is the larger side of numerical value in the order of modulation of this first planisphere and the order of modulation of this second planisphere, the 4th planisphere is for carrying out demodulation process to this second sub-information, the order of modulation of the 4th planisphere is the order of modulation of this first planisphere and the order of modulation sum of this second planisphere, and

This carries out demodulation process according to this first information to this first sub-information, comprising:

According to this first information, the 3rd planisphere is carried out to the first processing, so that only retain the first son sign mapping sign mapping corresponding with this first information in the 3rd planisphere, this first son sign mapping is in this sign mapping, to be used to indicate the part of this first information;

According to the second son sign mapping in the sign mapping retaining, this first sub-information is carried out to demodulation process, this second son sign mapping is in this sign mapping, to be used to indicate the part of this second information; And

This carries out demodulation process to this second sub-information and comprises:

According to the 4th planisphere, this second sub-information is carried out to demodulation process.

Specifically, with Y ¹in i receive signal

for example, transmitted bit is corresponding thereto $Q_i=[{\mathrm{\&pi;}}_{1,(i-1)q_1+1}\left(A\right),...,{\mathrm{\&pi;}}_{1,i{q}_1}\left(A\right),{\mathrm{\&pi;}}_{2,(i-1)q_2+1}\left(B\right),...,{\mathrm{\&pi;}}_{2,{\mathrm{iq}}_2}\left(B\right)],$ Base station utilizes known π ₁(A) (specifically, be basis ), select to comprise and this π ₁(A) the sign mapping of corresponding part (the first son sign mapping) (in other words, is removed and is not comprised and π ₁(A) the sign mapping of corresponding part (the first son sign mapping)), and, from this sign mapping, remove and π ₁(A) corresponding part (first son sign mapping), thus can obtain this with

corresponding part (the second son sign mapping).Thereby demodulation process can be carried out in base station in this part (the second son sign mapping), obtains

for example, as described in Figure 3, if the sign that constellation point comprises is mapped as 010/101, wherein, first is the corresponding part (the first son sign mapping) of information sending at the first time slot with this base station, if the information that this transmitting terminal sends at the first time slot is 1, can removes sign mapping 010 and in 101, remove first again, that is, determine with

corresponding part is 01.

Alternatively, in embodiments of the present invention, the minimum euclidean distance that this first son sign is shone upon between identical constellation point is maximization distance,

The minimum euclidean distance that this second son sign is shone upon between identical constellation point is maximization distance.

Specifically, in embodiments of the present invention, for one

combination, adjusts based on this combination

sign mapping, make this

owning under combination is corresponding

the minimum euclidean distance of combination maximizes, that is, as shown in Figure 2 b, sign is mapped as 111(a ₁=1, b ₁=1, b ₂=1) and 011(a ₁=0, b ₁=1, b ₂=1) minimum euclidean distance between a pair of point maximizes (being positioned at diagonal positions).Again for example, for one

combination, adjusts based on this combination sign mapping, make this

owning under combination is corresponding that is, as shown in Figure 2 b, sign is mapped as 111(a ₁=1, b ₁=1, b ₂=1) point, sign are mapped as 110(a ₁=1, b ₁=1, b ₂=0) point, sign are mapped as 100 point (a ₁=1, b ₁=0, b ₂=0) and sign be mapped as 101 point (a ₁=1, b ₁=0, b ₂=1) minimum euclidean distance between maximizes.

Alternatively, in embodiments of the present invention, in the identical sign mapping of this first son sign mapping, respectively this second son sign mapping is Gray code mapping each other,

In the identical sign mapping of this second son sign mapping, respectively this first son sign mapping is Gray code mapping each other.

Specifically, in embodiments of the present invention, after having determined the position of each point, the sign mapping of whole planisphere can be adjusted into Gray code mapping.Specifically, for example, for one

combination, adjusts based on this combination

sign mapping, make this

owning under combination is corresponding

that is, as shown in Figure 2 b, sign mapping 111(a ₁=1, b ₁=1, b ₂=1) and sign mapping 011(a ₁=0, b ₁=1, b ₂=1) be Gray code mapping.Again for example, for one

combination, adjusts based on this combination

sign mapping, make this

owning under combination is corresponding that is, as shown in Figure 2 b, sign mapping 111(a ₁=1, b ₁=1, b ₂=1), sign mapping 110(a ₁=1, b ₁=1, b ₂=0), sign mapping 100(a ₁=1, b ₁=0, b ₂=0) and sign mapping 101(a ₁=1, b ₁=0, b ₂=1) be Gray code mapping.

Fig. 3 shows q ₁=1, q ₂=2 o'clock based on

rank planisphere and side information carry out the indicative flowchart of an example of constellation demodulation.?

in rank planisphere (planisphere 1), as mentioned above, due to q ₁=1, q ₂=2, so information bit A(is denoted as, a ₁) length be 1, can be expressed as 0 or 1.Information bit B(is denoted as, b ₁b ₂) length be 2, can be expressed as 00,11,10,01.Thereby information bit C(is denoted as, a ₁b ₁b ₂) can be expressed as 000,111,010,101,011,100,001,110, at this

in the planisphere of rank, can identify this information bit C by four constellation point,, sign mapping [000] and [111] is all mapped in same constellation point, sign mapping [001] and [110] is all mapped in same constellation point, sign mapping [011] and [100] is all mapped in same constellation point, and sign mapping [010] and [101] is all mapped in same constellation point.Therefore, for example, a sending at the first time slot when base station ₁=0 o'clock, base station only need to be at a ₁in=0 sign mapping (planisphere 2), carry out demodulation, the planisphere 2 QPSK constellation (planisphere 3) with thering is Gray code mapping of equal value.

According to the method for the modulation treatment of the embodiment of the present invention, because base station and subscriber equipment can be known the information bit of its transmission, therefore, can get rid of the sign mapping of the information bit that does not comprise its transmission in each constellation point, thereby can reduce the order of modulation of planisphere, economize on resources and expense, improve efficiency of transmission.

Thereafter, can to adopt following methods to calculate corresponding in base station in the soft information of each bit, for example, the soft information that bit is 0 is positive infinity or a very large positive number; Bit is that 1 soft information is minus infinity or a very little negative.

Thereafter, base station can be to obtaining information bit π ₂(B) soft information is carried out deinterleaving processing.

Thereafter, base station can adopt and have Gray code mapping

rank planisphere is to this signal Y ²the system of separating is processed, and obtains bit sequence π ₃, and calculate π (P) ₃(P) soft information.Thereafter, to π ₃(P) soft information is carried out deinterleaving processing, and the π after deinterleaving is processed ₃(P) soft information and π ₂(B) soft information is for example delivered to, and decoding is carried out in the decoding of LDPC systematic code, obtains the K after decoding ₂individual information bit

in embodiments of the present invention, the process that the soft information of check digit after process according to deinterleaving base station and the soft information of information bit B are carried out decoding processing can be same as the prior art, and here, for fear of repeating, the description thereof will be omitted.

Above, enumerated the processing procedure of base station to the signal from via node, subscriber equipment is similar to the above process to the processing procedure of the signal from via node, and for fear of repeating, the description thereof will be omitted here.

Fig. 4 shows q ₁=q ₂=1(symmetric channel situation) in, in the LDPC that is 3/4 based on code check when coding,, the wireless both-way trunk network of method of transmission information that uses the embodiment of the present invention is performance simulation result and the comparison diagram of wireless both-way trunk network performance simulation result under rayleigh fading channel that uses the method for the transmission information based on bit XOR under rayleigh fading channel.As shown in Figure 4, in the code word error rate, be 10 ^-5situation under, the method for the transmission information of the embodiment of the present invention is compared with the method for transmission information based on bit XOR, can make signal to noise ratio (Es/No) promote 1dB.Owing to being symmetric channel, so base station and user's decoding performance is consistent.

Fig. 5 shows q ₁=1, q ₂=3(nonsymmetric channel situation) in, in the LDPC that is 3/4 based on code check when coding,, the wireless both-way trunk network of method of transmission information that uses the embodiment of the present invention is performance simulation result and the comparison diagram of wireless both-way trunk network performance simulation result under rayleigh fading channel that uses the method for the transmission information based on bit XOR under rayleigh fading channel.Owing to being nonsymmetric channel, so the decoding performance of base station and subscriber equipment is inconsistent.Simulation result shows, in the code word error rate, is 10 ^-5time, in base station side, the method for the transmission information of the embodiment of the present invention is compared with the method for transmission information based on bit XOR, can make signal to noise ratio promote 1.57dB; And in user equipment side, the method for the transmission information of the embodiment of the present invention is compared with the method for transmission information based on bit XOR, can make signal to noise ratio 0.2dB.

Alternatively, the first planisphere is for the modulation treatment of this first transmission ends to this first information, the second planisphere is for the modulation treatment of this second transmission ends to this second information, the 4th planisphere is for carrying out demodulation process to the 4th information, the order of modulation of the 4th planisphere is the order of modulation of this first planisphere and the order of modulation sum of this second planisphere, and

This carries out demodulation process according to this first information to this first sub-information, comprising:

According to this first information, the 4th planisphere is carried out to the second processing, to remove the constellation point that does not comprise the sign mapping corresponding with this first information in the 4th planisphere;

According to remaining constellation point, this first sub-information is carried out to demodulation process; And

This carries out demodulation process to this second sub-information and comprises:

According to the 4th planisphere, this second sub-information is carried out to demodulation process.

Specifically, in embodiments of the present invention, via node can also utilize

rank planisphere carries out modulation treatment, and now, on planisphere, each point only comprises a sign mapping, thereby, with Y ¹in i receive signal for example, transmitted bit is corresponding thereto $Q_i=[{\mathrm{\&pi;}}_{1,(i-1){\mathrm{<figure-callout\; id="1"\; label="q"\; filenames="HDA00002066955300021.png,HDA00002066955300031.png"\; state="\{\{state\}\}">q</figure-callout>}}_1+1}\left(A\right),...,{\mathrm{\&pi;}}_{1,i{q}_1}\left(A\right),{\mathrm{\&pi;}}_{2,(i-1)q_2+1}\left(B\right),...,{\mathrm{\&pi;}}_{2,{\mathrm{iq}}_2}\left(B\right)],$ Base station utilizes known π ₁(A) (specifically, be basis

), the sign mapping comprising from this constellation point, remove and π ₁(A) corresponding sign mapping, thus can obtain this with

corresponding sign mapping.Thereby demodulation process can be carried out in base station in this sign mapping, obtains

More than enumerated, when transmission ends is respectively subscriber equipment and base station according to the detailed process of the method for the transmission information of the embodiment of the present invention, should be understood that above process is equally applicable to the communication between base station and base station, subscriber equipment and subscriber equipment and other equipment.For example, when the different user in same community wishes to realize fast information interaction by via node, now, can substitute above-mentioned base station with another one subscriber equipment, thereby can effectively improve systematic function.Again for example, information interaction can be carried out by via node in the base station of different districts, now, can substitute above-mentioned subscriber equipment with another one base station, thereby can effectively improve systematic function.

According to the method for the transmission information of the embodiment of the present invention, utilize from the information of two source nodes feature of side information each other, after being synthesized, two information encode, and can utilize side information can effectively expand the Hamming distance of code word.Meanwhile, utilize the feature of systematic code, via node can carry out combined modulation to two information, and utilize side information to optimize the sign mapping of planisphere, make two information when sharing same planisphere, to keep minimum euclidean distance to maximize, and make sign be mapped as Gray code.Thereby even in nonsymmetric channel situation, two source nodes also can make full use of side information at the second time slot and recover exactly information needed separately.

Above, in conjunction with Fig. 1 to Fig. 6, describe in detail according to the method for the transmission information of the embodiment of the present invention, below, in conjunction with Fig. 7 to Fig. 8, describe in detail according to the device of the transmission information of the embodiment of the present invention.

Fig. 7 show from relaying angle of rotation of joint degree, describe according to the method 300 of the transmission information of the embodiment of the present invention, as shown in Figure 7, this device 300 comprises:

Acquiring unit 310, for obtaining from the first information of the first transmission ends with from the second information of the second transmission ends, and to coding unit 320 these first information of transmission and these second information;

Coding unit 320, for obtain this first information and this second information from this acquiring unit 310, and to the processing of encoding of this first information and this second information, to generate the 3rd information, and to modulating unit 330 transmission the 3rd information, wherein, the 3rd information comprise first codeword information corresponding with this first information, with corresponding the second codeword information and the check digit information of this second information;

Modulating unit 330, for obtain the 3rd information from coding unit 320, and carries out modulation treatment to the 3rd information, to generate the 4th information, and to transmitting element 340 transmission the 4th information;

Transmitting element 340, for obtaining the 4th information from this modulating unit 330, and send the 4th information to this first transmission ends and this second transmission ends, so that this first transmission ends is obtained this second information after the 4th information being carried out to decoding demodulation process according to this first information, this second transmission ends is obtained this first information after the 4th information being carried out to decoding demodulation process according to this second information;

Wherein, this modulating unit 330 specifically for:

This first codeword information and the second codeword information are carried out to combined modulation processing;

This check digit information is carried out separately to modulation treatment.

In embodiments of the present invention, transmission ends can be subscriber equipment, can be also base station, the present invention does not limit, below, for the ease of understanding, the transmission ends of take is respectively base station (example of the first transmission ends) and subscriber equipment (example of the second transmission ends) is example, describes.

Specifically, if subscriber equipment and base station need to communicate, with base station, need to send information bit A to subscriber equipment, it is example that subscriber equipment need to send to base station information bit B, and at the first time slot, base station can be according to its channel conditions, with suitable modulation system, for example, can adopt

rank planisphere is modulated information bit A, generates signal a.Equally, subscriber equipment can, according to its channel conditions, with suitable modulation system, for example, can adopt rank planisphere is modulated information bit B, generate signal b, in embodiments of the present invention, subscriber equipment and base station are carried out method and the process of modulation treatment based on planisphere to information bit can be same as the prior art, here for fear of repeating, the description thereof will be omitted.It should be noted that, in embodiments of the present invention, q ₁(order of modulation) is corresponding with the length of information bit A, for example, if the length of information bit A is 1, q ₁be 1, can be by 2 in planisphere ¹individual constellation point represents this information bit A,, has two kinds of possible sign mappings (0 or 1) that is.Q ₂(order of modulation) is corresponding with the length of information bit A, for example, if the length of information bit B is 2, q ₂be 2, can be by 2 in planisphere ²individual constellation point represents this information bit B,, has four kinds of possible sign mappings (00,11,01 or 10) that is.And, in embodiments of the present invention, q ₁with q ₂can equate, also can be unequal.

Base station can will send to via node to the signal a generating after information bit A modulation, and subscriber equipment will send to via node to the signal b generating after information bit B modulation.

At the first time slot, acquiring unit 310 can receive the signal a(carry information bit A that base station sends), and the signal b(carry information bit B of subscriber equipment transmission).And acquiring unit 310 for example can utilize, joint iterative demodulation and decoding method, obtaining information bit A from signal a, obtaining information bit B from signal b, here, as example, and non-limiting, this information bit A can be expressed as $A=\{a_1,...a_i,...,a_{K_1}\},$ This information bit B can be expressed as $B=\{{\mathrm{<figure-callout\; id="1"\; label="b"\; filenames="HDA00002066955300021.png,HDA00002066955300031.png"\; state="\{\{state\}\}">b</figure-callout>}}_1,...b_i,...,b_{K_2}\},$ Wherein, K ₁the length that represents information bit A, a _irepresent i bit in information bit A, K ₂the length that represents information bit B, b _irepresent i bit in information bit B.

Thereafter, coding unit 320 can synthesize a bit sequence to information bit A and this information bit B, and to the processing of encoding of the bit sequence after synthetic.

Alternatively, this coding unit 320 is specifically for this first information and this second information are carried out to serial to parallel conversion processing, and to synthesize the 5th information, the 5th information comprises this first information and this second information;

For processing that the 5th information is encoded.

Specifically, coding unit 320 can for example carry out this information bit A and information bit B, and serial to parallel conversion generates input bit sequence C, and as example, and non-limiting, this information bit C can be expressed as $C=\{a_1,...,a_{{\mathrm{<figure-callout\; id="1"\; label="K"\; filenames="HDA00002066955300021.png,HDA00002066955300031.png"\; state="\{\{state\}\}">K</figure-callout>}}_1},{\mathrm{<figure-callout\; id="1"\; label="b"\; filenames="HDA00002066955300021.png,HDA00002066955300031.png"\; state="\{\{state\}\}">b</figure-callout>}}_1,...,b_{K_2}\}.$

In embodiments of the present invention, above-mentioned q ₁, q ₂, K ₁and K ₂there is following relation,

k ₁+ K ₂=K

Thereafter, coding unit 320 can utilize the low density parity check code that code check is K/N (LDPC, Low Density Parity Check) to the processing of encoding of input bit sequence C, obtains its corresponding code word C ', as example, and non-limiting, this code word C ' can be expressed as $C^{\&prime;}=\{a_1^{\&prime;},...,a_{{\mathrm{<figure-callout\; id="1"\; label="K"\; filenames="HDA00002066955300021.png,HDA00002066955300031.png"\; state="\{\{state\}\}">K</figure-callout>}}_1}^{\&prime;},{\mathrm{<figure-callout\; id="1"\; label="b"\; filenames="HDA00002066955300021.png,HDA00002066955300031.png"\; state="\{\{state\}\}">b</figure-callout>}}_1^{\&prime;},...,b_{K_2}^{\&prime;},{\mathrm{<figure-callout\; id="1"\; label="p"\; filenames="HDA00002066955300021.png,HDA00002066955300031.png"\; state="\{\{state\}\}">p</figure-callout>}}_1,...,p_i...,p_{N-K}\}.$

In embodiments of the present invention, from code word C ', can isolate the code word corresponding with information bit A and (for example, can be expressed as

), the code word corresponding with information bit B (for example, can be expressed as

) and check digit P, as example, and non-limiting, this check digit P can be expressed as P={p ₁... p _i..., p _n-K, wherein, N represents the length of code word C ', N-K represents the length of check digit P, p _irepresent i bit in check digit P.

Thereafter, coding unit 320 can be K based on length ₁bit interleaver 1, the code word corresponding with information bit A carried out to Bit Interleave processing, obtain bit sequence π ₁(A); Based on length, be K ₂bit interleaver 2, the code word corresponding with information bit B carried out to Bit Interleave processing, obtain bit sequence π ₂(B); 3 couples of check digit P of the bit interleaver that is N-K based on length carry out Bit Interleave processing, obtain bit sequence π ₃(P).

Thereafter, coding unit 320 can be by bit sequence π ₁(A) be divided into

part, every part comprises q ₁individual bit, that is, and π ₁(A) the i part bit sequence in can be expressed as

by bit sequence π ₂(B) be divided into

part, every part comprises q ₂individual bit, that is, and π ₂(B) the i part bit sequence in can be expressed as

thereafter, by each part of bit sequence π after dividing ₁and bit sequence π (A) ₂(B) alternative arrangement, obtains bit sequence

(example of the 3rd information), wherein, $Q_i=[{\mathrm{\&pi;}}_{1,(i-1){\mathrm{<figure-callout\; id="1"\; label="q"\; filenames="HDA00002066955300021.png,HDA00002066955300031.png"\; state="\{\{state\}\}">q</figure-callout>}}_1+1}\left(A\right),...,{\mathrm{\&pi;}}_{1,i{q}_1}\left(A\right),{\mathrm{\&pi;}}_{2,(i-1)q_2+1}\left(B\right),...,{\mathrm{\&pi;}}_{2,{\mathrm{iq}}_2}\left(B\right)].$

By the feature of utilizing the rear system bits (above-mentioned the first codeword information and the second codeword information) of systematic code coding and check digit (above-mentioned check digit information) to separate, in the information that can generate from encoding (above-mentioned the 3rd information), isolate first codeword information corresponding with this first information, with corresponding the second codeword information and the check digit information of this second information, thereby, can make full use of two source information each other the feature of side information carry out aftermentioned modulation treatment.

Thereafter, modulating unit 330 can be to this bit sequence

carry out combined modulation processing.

Alternatively, in embodiments of the present invention, the first planisphere is for the modulation treatment of this first transmission ends to this first information, and the second planisphere is used for the modulation treatment of this second transmission ends to this second information, and

This modulating unit 330 specifically for:

According to the 3rd planisphere, this first codeword information and this second codeword information are carried out to combined modulation processing, the order of modulation of the 3rd planisphere is the larger side of numerical value in the order of modulation of this first planisphere and the order of modulation of this second planisphere, and each the sign mapping in the 3rd planisphere comprises the second son sign mapping that is used to indicate the first son sign mapping of this first information and is used to indicate this second information;

According to the 4th planisphere, this check digit information is carried out to modulation treatment, the order of modulation of the 4th planisphere be the order of modulation of this first planisphere and the order of modulation of this second planisphere and.

Alternatively, in the identical sign mapping of this first son sign mapping, respectively this second son sign mapping is Gray code mapping each other,

In the identical sign mapping of this second son sign mapping, respectively this first son sign mapping is Gray code mapping each other.

Alternatively, the minimum euclidean distance that this first son sign is shone upon between identical constellation point is maximization distance,

The minimum euclidean distance that this second son sign is shone upon between identical constellation point is maximization distance.

Specifically, modulating unit 330 can adopt

rank planisphere is to bit sequence

modulate.That is, the combined length of information bit A and information bit B is q ₁+ q ₂, this q ₁+ q ₂individual bit is shared should

rank planisphere, therefore, in embodiments of the present invention, can determine this q according to following methods ₁+ q ₂individual bit is at this

sign mapping in the planisphere of rank, that is, with $Q_i=[{\mathrm{\&pi;}}_{1,(i-1){\mathrm{<figure-callout\; id="1"\; label="q"\; filenames="HDA00002066955300021.png,HDA00002066955300031.png"\; state="\{\{state\}\}">q</figure-callout>}}_1+1}\left(A\right),...,{\mathrm{\&pi;}}_{1,i{q}_1}\left(A\right),{\mathrm{\&pi;}}_{2,(i-1)q_2+1}\left(B\right),...,{\mathrm{\&pi;}}_{2,{\mathrm{iq}}_2}\left(B\right)]$ For example, without loss of generality, at this, can suppose q ₂>=q ₁, that is, and max{q ₁, q ₂}=q ₂.

Therefore, first, for one

processing unit 320 can be by possible being somebody's turn to do with

combinatorial mapping at this

in the planisphere of rank, like this should

q in the planisphere of rank ₂individual constellation point has comprised all

the combination of (B is corresponding with information bit) and one

the combination of (A is corresponding with information bit).

Thereafter, processing unit 320 can be by remaining

individual with

combination displacement at this

in the planisphere of rank, like this, at this in the planisphere of rank, each constellation point comprises

individual sign mapping (that is, quantity is identical with minimum order of modulation, identical with minimum information bit length), at this in individual sign mapping, the son sign mapping corresponding with information bit A is different each other, and the mapping of the son corresponding with information bit B sign is different each other.Thereby, in base station and user equipment side, can, according to sending separately information bit, only retain sign corresponding with comprising this information bit in each constellation point and shine upon, and remove other sign mappings.

In embodiments of the present invention, for one combination, adjusts based on this combination

sign mapping, make this owning under combination is corresponding

the minimum euclidean distance of combination maximizes, that is, as shown in Figure 2 b, sign is mapped as 111(a ₁=1, b ₁=1, b ₂=1) and 011(a ₁=0, b ₁=1, b ₂=1) minimum euclidean distance between a pair of point maximizes (being positioned at diagonal positions).Again for example, for one

combination, adjusts based on this combination sign mapping, make this

owning under combination is corresponding

that is, as shown in Figure 2 b, sign is mapped as 111(a ₁=1, b ₁=1, b ₂=1) point, sign are mapped as 110(a ₁=1, b ₁=1, b ₂=0) point, sign are mapped as 100 point (a ₁=1, b ₁=0, b ₂=0) and sign be mapped as 101 point (a ₁=1, b ₁=0, b ₂=1) minimum euclidean distance between maximizes.

In embodiments of the present invention, after having determined the position of each point, the sign mapping of whole planisphere can be adjusted into Gray code mapping.Specifically, for example, for one

combination, adjusts based on this combination

sign mapping, make this

owning under combination is corresponding

that is, as shown in Figure 2 b, sign mapping 111(a ₁=1, b ₁=1, b ₂=1) and sign mapping 011(a ₁=0, b ₁=1, b ₂=1) be Gray code mapping.Again for example, for one

combination, adjusts based on this combination

sign mapping, make this

owning under combination is corresponding

that is, as shown in Figure 2 b, sign mapping 111(a ₁=1, b ₁=1, b ₂=1), sign mapping 110(a ₁=1, b ₁=1, b ₂=0), sign mapping 100(a ₁=1, b ₁=0, b ₂=0) and sign mapping 101(a ₁=1, b ₁=0, b ₂=1) be Gray code mapping.

For example, Fig. 2 a shows q ₁=q ₂=1 o'clock for modulation treatment one example of rank planisphere, due to q ₁=q ₂=1, therefore, information bit A(is denoted as, a ₁) and information bit B(be denoted as, b ₁) length be 1, that is, information bit A can be expressed as 0 or 1, information bit B can be expressed as 0 or 1.Thereby information bit C(is denoted as, a ₁b ₁) can be expressed as 00,11,01,10.As shown in Figure 2 a, at this in the planisphere of rank, can identify this information bit C by two constellation point, that is, sign mapping [00] and [11] is all contained in same constellation point, and sign mapping [01] and [10] is all contained in another one constellation point.

Again for example, Fig. 2 b shows q ₁=1, q ₂=2 o'clock for modulation treatment

another example of rank planisphere, due to q ₁=1, q ₂=2, therefore, information bit A(is denoted as, a ₁) length be 1, can be expressed as 0 or 1.Information bit B(is denoted as, b ₁b ₂) length be 2, can be expressed as 00,11,10,01.Thereby information bit C(is denoted as, a ₁b ₁b ₂) can be expressed as 000,111,010,101,011,100,001,110.As shown in Figure 2 b, at this

in the planisphere of rank, can identify this information bit C by four constellation point,, sign mapping [000] and [111] is all mapped in same constellation point, sign mapping [001] and [110] is all mapped in same constellation point, sign mapping [011] and [100] is all mapped in same constellation point, and sign mapping [010] and [101] is all mapped in same constellation point.And, can make [a ₁=0, b ₁b ₂] and [a ₁=1, b ₁b ₂] minimum euclidean distance for maximizing distance (equaling the Euclidean distance of QPSK planisphere), and, can make this

sign in the planisphere of rank is mapped as Gray code mapping, therefore, from this planisphere, obtains the sign mapping [a about information bit A ₁, b ₁b ₂=00], [a ₁, b ₁b ₂=01], [a ₁, b ₁b ₂=10] and [a ₁, b ₁b ₂=11] in equivalence and BPSK planisphere, the sign about information bit A is shone upon.

According to the method for the modulation treatment of the embodiment of the present invention, because base station and subscriber equipment can be known the information bit of its transmission, therefore, can get rid of the sign mapping of the information bit that does not comprise its transmission in each constellation point, thereby can reduce the order of modulation of planisphere, economize on resources and expense, improve efficiency of transmission.

Modulating unit 330 is according to being somebody's turn to do

rank planisphere is to bit sequence can picked up signal X after modulating ¹, X ¹can be expressed as

(altogether

individual transmission symbol).

And modulating unit 330, can adopt and have Gray code mapping

rank planisphere is to this bit sequence π ₃(P) modulate, obtain signal X ², X ²can be expressed as (altogether

individual transmission symbol).

At the second time slot, transmitting element 340 can be by signal X ¹with signal X ²(altogether

individual transmission symbol) broadcast away successively.

At the second time slot, base station and subscriber equipment receive respectively after the signal of via node broadcast, respectively this signal are carried out the processing such as demodulation.

Below, take base station the process of the processing of this signal is described as example.

First, base station receives and X ¹corresponding reception signal Y ¹with and X ²corresponding reception signal Y ², wherein, Y ¹can be expressed as

and base station receives, wherein, Y ²can be expressed as

in embodiments of the present invention, base station (comprises and receives signal Y the signal from via node ¹with reception signal Y ²) carry out serial to parallel conversion processing, will receive signal Y ¹with reception signal Y ²distinguish.

Thereafter, base station utilizes it at the first time slot, to send to information bit A and the bit interleaver 1 of via node, generates the information bit π after interweaving ₁(A).

Thereafter, base station utilizes π ₁(A), Y to received signal ¹carry out demodulation, obtain information bit π ₂(B) corresponding soft information.

Specifically, with Y ¹in i receive signal

for example, transmitted bit is corresponding thereto $Q_i=[{\mathrm{\&pi;}}_{1,(i-1){\mathrm{<figure-callout\; id="1"\; label="q"\; filenames="HDA00002066955300021.png,HDA00002066955300031.png"\; state="\{\{state\}\}">q</figure-callout>}}_1+1}\left(A\right),...,{\mathrm{\&pi;}}_{1,i{q}_1}\left(A\right),{\mathrm{\&pi;}}_{2,(i-1)q_2+1}\left(B\right),...,{\mathrm{\&pi;}}_{2,{\mathrm{iq}}_2}\left(B\right)],$ Base station utilizes known π ₁(A) (specifically, be basis

selection comprises this π ₁(A) constellation point, and, the sign mapping comprising from this constellation point, remove and π ₁(A) corresponding part (son sign mapping), thus can obtain this with

corresponding part (mapping of son sign).Thereby, base station can with

in corresponding part, carry out demodulation process, obtain

Fig. 3 shows q ₁=1, q ₂=2 o'clock based on rank planisphere and side information carry out the indicative flowchart of an example of constellation demodulation.?

in rank planisphere (planisphere 1), as mentioned above, due to q ₁=1, q ₂=2, so information bit A(is denoted as, a ₁) length be 1, can be expressed as 0 or 1.Information bit B(is denoted as, b ₁b ₂) length be 2, can be expressed as 00,11,10,01.Thereby information bit C(is denoted as, a ₁b ₁b ₂) can be expressed as 000,111,010,101,011,100,001,110, at this

in the planisphere of rank, can identify this information bit C by four constellation point,, sign mapping [000] and [111] is all mapped in same constellation point, sign mapping [001] and [110] is all mapped in same constellation point, sign mapping [011] and [100] is all mapped in same constellation point, and sign mapping [010] and [101] is all mapped in same constellation point.Therefore, for example, a sending at the first time slot when base station ₁=0 o'clock, base station only need to be at a ₁in=0 sign mapping (planisphere 2), carry out demodulation, the planisphere 2 QPSK constellation (planisphere 3) with thering is Gray code mapping of equal value.

Thereafter, can to adopt following methods to calculate corresponding in base station

in the soft information of each bit, for example, the soft information that bit is 0 is positive infinity or a very large positive number; Bit is that 1 soft information is minus infinity or a very little negative.

Thereafter, base station can be to obtaining information bit π ₂(B) soft information is carried out deinterleaving processing.

Thereafter, base station can adopt and have Gray code mapping

rank planisphere is to this signal Y ²the system of separating is processed, and obtains bit sequence π ₃, and calculate π (P) ₃(P) soft information.Thereafter, to π ₃(P) soft information is carried out deinterleaving processing, and the π after deinterleaving is processed ₃(P) soft information and π ₂(B) soft information is for example delivered to, and decoding is carried out in the decoding of LDPC systematic code, obtains the K after decoding ₂individual information bit

in embodiments of the present invention, the process that the soft information of check digit after process according to deinterleaving base station and the soft information of information bit B are carried out decoding processing can be same as the prior art, and here, for fear of repeating, the description thereof will be omitted.

Above, enumerated the processing procedure of base station to the signal from via node, subscriber equipment is similar to the above process to the processing procedure of the signal from via node, and for fear of repeating, the description thereof will be omitted here.

Fig. 4 shows q ₁=q ₂=1(symmetric channel situation) in, in the LDPC that is 3/4 based on code check when coding,, the wireless both-way trunk network of method of transmission information that uses the embodiment of the present invention is performance simulation result and the comparison diagram of wireless both-way trunk network performance simulation result under rayleigh fading channel that uses the method for the transmission information based on bit XOR under rayleigh fading channel.As shown in Figure 4, in the code word error rate, be 10 ^-5situation under, the method for the transmission information of the embodiment of the present invention is compared with the method for transmission information based on bit XOR, can make signal to noise ratio (Es/No) promote 1dB.Owing to being symmetric channel, so base station and user's decoding performance is consistent.

Fig. 5 shows q ₁=1, q ₂=3(nonsymmetric channel situation) in, in the LDPC that is 3/4 based on code check when coding,, the wireless both-way trunk network of method of transmission information that uses the embodiment of the present invention is performance simulation result and the comparison diagram of wireless both-way trunk network performance simulation result under rayleigh fading channel that uses the method for the transmission information based on bit XOR under rayleigh fading channel.Owing to being nonsymmetric channel, so the decoding performance of base station and subscriber equipment is inconsistent.Simulation result shows, in the code word error rate, is 10 ^-5time, in base station side, the method for the transmission information of the embodiment of the present invention is compared with the method for transmission information based on bit XOR, can make signal to noise ratio promote 1.57dB; And in user equipment side, the method for the transmission information of the embodiment of the present invention is compared with the method for transmission information based on bit XOR, can make signal to noise ratio 0.2dB.

More than enumerated via node utilization

rank planisphere carries out the embodiment of modulation treatment, should be understood that the present invention is not limited thereto, and for example, via node can also utilize

rank planisphere carries out modulation treatment, and now, on planisphere, each point only comprises a sign mapping.

More than enumerated, when transmission ends is respectively subscriber equipment and base station according to the detailed process of the method for the transmission information of the embodiment of the present invention, should be understood that above process is equally applicable to the communication between base station and base station, subscriber equipment and subscriber equipment and other equipment.For example, when the different user in same community wishes to realize fast information interaction by via node, now, can substitute above-mentioned base station with another one subscriber equipment, thereby can effectively improve systematic function.Again for example, information interaction can be carried out by via node in the base station of different districts, now, can substitute above-mentioned subscriber equipment with another one base station, thereby can effectively improve systematic function.

It according to the device 300 of the transmission information of the embodiment of the present invention, is the subject of implementation in the method 100 of the embodiment of the present invention, and, each unit in the device 300 of this transmission information and module and above-mentioned other operations and/or function are respectively in order to realize the corresponding flow process of the method 100 in Fig. 1, for simplicity, do not repeat them here.

According to the device of the transmission information of the embodiment of the present invention, utilize from the information of two source nodes feature of side information each other, after being synthesized, two information encode, and can utilize side information can effectively expand the Hamming distance of code word.Meanwhile, utilize the feature of systematic code, via node can carry out combined modulation to two information, and utilize side information to optimize the sign mapping of planisphere, make two information when sharing same planisphere, to keep minimum euclidean distance to maximize, and make sign be mapped as Gray code.Thereby even in nonsymmetric channel situation, two source nodes also can make full use of side information at the second time slot and recover exactly information needed separately.

Fig. 8 show for example, from transmission ends (, base station or subscriber equipment) angle, describe according to the device 400 of the transmission information of the embodiment of the present invention, as shown in Figure 8, this device 400 comprises:

Transmitting element 410, be used for making the first transmission ends to send the first information to via node, so that this via node is to this first information first codeword information corresponding with this first information with generation after the processing of encoding from the second information of the second transmission ends, second codeword information and the check digit information corresponding with this second information;

Receiving element 420, the 4th information sending for receiving this via node, and to processing unit 430 transmission the 4th information, the 4th information comprises this via node to this first codeword information and the second codeword information is carried out rear the first sub-information generating of combined modulation processing and this via node carries out separately the second sub-information generating after modulation treatment to this check digit information;

Processing unit 430, for obtaining the 4th information from this receiving element 420, and according to this first information, carries out demodulation process to this first sub-information;

For this second sub-information is carried out to demodulation process, with according to this first sub-information after demodulation process and this second information of the second sub-acquisition of information after demodulation process.

In embodiments of the present invention, transmission ends can be subscriber equipment, can be also base station, the present invention does not limit, below, for the ease of understanding, the transmission ends of take is respectively base station (example of the first transmission ends) and subscriber equipment (example of the second transmission ends) is example, describes.

Specifically, if subscriber equipment and base station need to communicate, with base station, need to send information bit A to subscriber equipment, subscriber equipment need to send information bit B to base station be example, at S210, at the first time slot, base station can be according to its channel conditions, with suitable modulation system, for example, can adopt

rank planisphere is modulated information bit A, generates signal a.And transmitting element 410 can will send to via node to the signal a generating after information bit A modulation.

Equally, subscriber equipment can, according to its channel conditions, with suitable modulation system, for example, can adopt

rank planisphere is modulated information bit B, generates signal b.And transmitting element 410 can will send to via node to the signal b generating after information bit B modulation.

In embodiments of the present invention, subscriber equipment and base station are carried out method and the process of modulation treatment based on planisphere to information bit can be same as the prior art, and for fear of repeating, the description thereof will be omitted here.

At the first time slot, via node can receive the signal a(carry information bit A that base station sends), and the signal b(carry information bit B of subscriber equipment transmission).And via node for example can utilize, joint iterative demodulation and decoding method, obtaining information bit A from signal a, obtaining information bit B from signal b, here, as example, and non-limiting, this information bit A can be expressed as $A=\{a_1,...a_i,...,a_{K_1}\},$ This information bit B can be expressed as $B=\{{\mathrm{<figure-callout\; id="1"\; label="b"\; filenames="HDA00002066955300021.png,HDA00002066955300031.png"\; state="\{\{state\}\}">b</figure-callout>}}_1,...b_i,...,b_{K_2}\},$ Wherein, K ₁the length that represents information bit A, a _irepresent i bit in information bit A, K ₂the length that represents information bit B, b _irepresent i bit in information bit B.

Via node can synthesize a bit sequence to information bit A and this information bit B, and to the processing of encoding of the bit sequence after synthetic.

Specifically, via node can for example carry out this information bit A and information bit B, and serial to parallel conversion (first example of processing), generates input bit sequence C, and as example, and non-limiting, this information bit C can be expressed as

In embodiments of the present invention, above-mentioned q ₁, q ₂, K ₁and K ₂there is following relation,

$\frac{K_1}{K_2}=\frac{q_1}{q_2},{\mathrm{<figure-callout\; id="1"\; label="K"\; filenames="HDA00002066955300021.png,HDA00002066955300031.png"\; state="\{\{state\}\}">K</figure-callout>}}_1+K_2=K$

Thereafter, for example, via node can utilize the low density parity check code (LDPC that code check is K/N, Low Density Parity Check) to the processing of encoding of input bit sequence C, obtain its corresponding code word C ', as example, and non-limiting, this code word C ' can be expressed as $C^{\&prime;}=\{a_1^{\&prime;},...,a_{{\mathrm{<figure-callout\; id="1"\; label="K"\; filenames="HDA00002066955300021.png,HDA00002066955300031.png"\; state="\{\{state\}\}">K</figure-callout>}}_1}^{\&prime;},{\mathrm{<figure-callout\; id="1"\; label="b"\; filenames="HDA00002066955300021.png,HDA00002066955300031.png"\; state="\{\{state\}\}">b</figure-callout>}}_1^{\&prime;},...,b_{K_2}^{\&prime;},{\mathrm{<figure-callout\; id="1"\; label="p"\; filenames="HDA00002066955300021.png,HDA00002066955300031.png"\; state="\{\{state\}\}">p</figure-callout>}}_1,...,p_i...,p_{N-K}\}.$

In embodiments of the present invention, from code word C ', can isolate the code word corresponding with information bit A and (for example, can be expressed as

), the code word corresponding with information bit B (for example, can be expressed as

) and check digit P, as example, and non-limiting, this check digit P can be expressed as P={p ₁... p _i..., p _n-K, wherein, N represents the length of code word C ', N-K represents the length of check digit P, p _irepresent i bit in check digit P.

Thereafter, via node can be K based on length ₁bit interleaver 1, the code word corresponding with information bit A carried out to Bit Interleave processing, obtain bit sequence π ₁(A); Based on length, be K ₂bit interleaver 2, the code word corresponding with information bit B carried out to Bit Interleave processing, obtain bit sequence π ₂(B); 3 couples of check digit P of the bit interleaver that is N-K based on length carry out Bit Interleave processing, obtain bit sequence π ₃(P).

Thereafter, via node can be by bit sequence π ₁(A) be divided into

part, every part comprises q ₁individual bit, that is, and π ₁(A) the i part bit sequence in can be expressed as by bit sequence π ₂(B) be divided into

part, every part comprises q ₂individual bit, that is, and π ₂(B) the i part bit sequence in can be expressed as

thereafter, by each part of bit sequence π after dividing ₁and bit sequence π (A) ₂(B) alternative arrangement, obtains bit sequence

(example of the 3rd information), wherein, $Q_i=[{\mathrm{\&pi;}}_{1,(i-1){\mathrm{<figure-callout\; id="1"\; label="q"\; filenames="HDA00002066955300021.png,HDA00002066955300031.png"\; state="\{\{state\}\}">q</figure-callout>}}_1+1}\left(A\right),...,{\mathrm{\&pi;}}_{1,i{q}_1}\left(A\right),{\mathrm{\&pi;}}_{2,(i-1)q_2+1}\left(B\right),...,{\mathrm{\&pi;}}_{2,{\mathrm{iq}}_2}\left(B\right)].$

By the feature of utilizing the rear system bits (above-mentioned the first codeword information and the second codeword information) of systematic code coding and check digit (above-mentioned check digit information) to separate, in the information that can generate from encoding (above-mentioned the 3rd information), isolate first codeword information corresponding with this first information, with corresponding the second codeword information and the check digit information of this second information, thereby, can make full use of two source information each other the feature of side information carry out aftermentioned modulation treatment.

Thereafter, via node can be to this bit sequence

carry out combined modulation processing.

Specifically, via node can adopt

rank planisphere is to bit sequence

modulate.That is, the combined length of information bit A and information bit B is q ₁+ q ₂, this q ₁+ q ₂individual bit is shared should

rank planisphere, therefore, in embodiments of the present invention, can determine this q according to following methods ₁+ q ₂individual bit is at this

sign mapping in the planisphere of rank, that is, with $Q_i=[{\mathrm{\&pi;}}_{1,(i-1){\mathrm{<figure-callout\; id="1"\; label="q"\; filenames="HDA00002066955300021.png,HDA00002066955300031.png"\; state="\{\{state\}\}">q</figure-callout>}}_1+1}\left(A\right),...,{\mathrm{\&pi;}}_{1,i{q}_1}\left(A\right),{\mathrm{\&pi;}}_{2,(i-1)q_2+1}\left(B\right),...,{\mathrm{\&pi;}}_{2,{\mathrm{iq}}_2}\left(B\right)]$ For example, without loss of generality, at this, can suppose q ₂>=q ₁, that is, and max{q ₁, q ₂}=q ₂.

Therefore, first, for one

should by possible

with

combinatorial mapping at this in the planisphere of rank, like this should

q in the planisphere of rank ₂individual constellation point has comprised all

the combination of (B is corresponding with information bit) and one

the combination of (A is corresponding with information bit).

Thereafter, by remaining

individual

with

combination displacement at this

in the planisphere of rank, like this, at this

in the planisphere of rank, each constellation point comprises

individual sign mapping (that is, quantity is identical with minimum order of modulation, identical with minimum information bit length), at this in individual sign mapping, the son sign mapping corresponding with information bit A is different each other, and the mapping of the son corresponding with information bit B sign is different each other.

Via node is according to being somebody's turn to do

rank planisphere is to bit sequence

can picked up signal X after modulating ¹, X ¹can be expressed as

(altogether individual transmission symbol).

For example, and via node,, can adopt and have Gray code mapping rank planisphere is to this bit sequence π ₃(P) modulate, obtain signal X ², X ²can be expressed as $X^2=[x_1^2,...,x_i^2,...,x_{(N-K)/({\mathrm{<figure-callout\; id="1"\; label="q"\; filenames="HDA00002066955300021.png,HDA00002066955300031.png"\; state="\{\{state\}\}">q</figure-callout>}}_1+q_2)}^2]$ (altogether

individual transmission symbol).

Thereafter, at the second time slot, via node can be by signal X ¹with signal X ²(altogether individual transmission symbol) broadcast away successively.

At the second time slot, receiving element 420 receives the signal of via node broadcast, and thereafter, 430 pairs of these signals of processing unit carry out the processing such as demodulation.

Specifically, receiving element 420 receives and X ¹corresponding reception signal Y ¹with and X ²corresponding reception signal Y ², wherein, Y ¹can be expressed as

and base station receives, wherein, Y ²can be expressed as

in embodiments of the present invention, 430 pairs of signals from via node of processing unit (comprise and receive signal Y ¹with reception signal Y ²) carry out serial to parallel conversion processing, will receive signal Y ¹with reception signal Y ²distinguish.

Thereafter, processing unit 430 utilizes it at the first time slot, to send to information bit A and the bit interleaver 1 of via node, generates the information bit π after interweaving ₁(A).

Thereafter, processing unit 430 utilizes π ₁(A), Y to received signal ¹carry out demodulation, obtain information bit π ₂(B) corresponding soft information.

Alternatively, in embodiments of the present invention, the first planisphere is for the modulation treatment of this first transmission ends to this first information, the second planisphere is for the modulation treatment of this second transmission ends to this second information, the 3rd planisphere is for carrying out demodulation process to this first sub-information, the order of modulation of the 3rd planisphere is the larger side of numerical value in the order of modulation of this first planisphere and the order of modulation of this second planisphere, the 4th planisphere is for carrying out demodulation process to this second sub-information, the order of modulation of the 4th planisphere is the order of modulation of this first planisphere and the order of modulation sum of this second planisphere, and

This processing unit is specifically for according to this first information, according to this first information, the 3rd planisphere is carried out to the first processing, so that only retain the first son sign mapping sign mapping corresponding with this first information in the 3rd planisphere, this first son sign mapping is in this sign mapping, to be used to indicate the part of this first information;

For according to the second son sign mapping of the sign mapping retaining, this first sub-information is carried out to demodulation process, this second son sign mapping is in this sign mapping, to be used to indicate the part of this second information; And

For according to the 4th planisphere, this second sub-information is carried out to demodulation process.

Specifically, specifically, with Y ¹in i receive signal

for example, transmitted bit is corresponding thereto $Q_i=[{\mathrm{\&pi;}}_{1,(i-1)q_1+1}\left(A\right),...,{\mathrm{\&pi;}}_{1,i{q}_1}\left(A\right),{\mathrm{\&pi;}}_{2,(i-1)q_2+1}\left(B\right),...,{\mathrm{\&pi;}}_{2,{\mathrm{iq}}_2}\left(B\right)],$ Base station utilizes known π ₁(A) (specifically, be basis

), select to comprise and this π ₁(A) the sign mapping of corresponding part (the first son sign mapping) (in other words, is removed and is not comprised and π ₁(A) the sign mapping of corresponding part (the first son sign mapping)), and, from this sign mapping, remove and π ₁(A) corresponding part (first son sign mapping), thus can obtain this with

corresponding part (the second son sign mapping).Thereby demodulation process can be carried out in base station in this part (the second son sign mapping), obtains

for example, as described in Figure 3, if the sign that constellation point comprises is mapped as 010/101, wherein, first is the corresponding part (the first son sign mapping) of information sending at the first time slot with this base station, if the information that this transmitting terminal sends at the first time slot is 1, can removes sign mapping 010 and in 101, remove first again, that is, determine with

corresponding part is 01.

Alternatively, in embodiments of the present invention, the minimum euclidean distance that this first son sign is shone upon between identical constellation point is maximization distance,

The minimum euclidean distance that this second son sign is shone upon between identical constellation point is maximization distance.

Specifically, in embodiments of the present invention, for one

combination, adjusts based on this combination

sign mapping, make this

owning under combination is corresponding

the minimum euclidean distance of combination maximizes, that is, as shown in Figure 2 b, sign is mapped as 111(a ₁=1, b ₁=1, b ₂=1) and 011(a ₁=0, b ₁=1, b ₂=1) minimum euclidean distance between a pair of point maximizes (being positioned at diagonal positions).Again for example, for one combination, adjusts based on this combination

sign mapping, make this owning under combination is corresponding

that is, as shown in Figure 2 b, sign is mapped as 111(a ₁=1, b ₁=1, b ₂=1) point, sign are mapped as 110(a ₁=1, b ₁=1, b ₂=0) point, sign are mapped as 100 point (a ₁=1, b ₁=0, b ₂=0) and sign be mapped as 101 point (a ₁=1, b ₁=0, b ₂=1) minimum euclidean distance between maximizes.

Alternatively, in embodiments of the present invention, in the identical sign mapping of this first son sign mapping, respectively this second son sign mapping is Gray code mapping each other,

In the identical sign mapping of this second son sign mapping, respectively this first son sign mapping is Gray code mapping each other.

Specifically, in embodiments of the present invention, after having determined the position of each point, the sign mapping of whole planisphere can be adjusted into Gray code mapping.Specifically, for example, for one

combination, adjusts based on this combination

sign mapping, make this

owning under combination is corresponding

that is, as shown in Figure 2 b, sign mapping 111(a ₁=1, b ₁=1, b ₂=1) and sign mapping 011(a ₁=0, b ₁=1, b ₂=1) be Gray code mapping.Again for example, for one

combination, adjusts based on this combination sign mapping, make this

owning under combination is corresponding

that is, as shown in Figure 2 b, sign mapping 111(a ₁=1, b ₁=1, b ₂=1), sign mapping 110(a ₁=1, b ₁=1, b ₂=0), sign mapping 100(a ₁=1, b ₁=0, b ₂=0) and sign mapping 101(a ₁=1, b ₁=0, b ₂=1) be Gray code mapping.

Fig. 3 shows q ₁=1, q ₂=2 o'clock based on

rank planisphere and side information carry out the indicative flowchart of an example of constellation demodulation.?

in rank planisphere (planisphere 1), as mentioned above, due to q ₁=1, q ₂=2, so information bit A(is denoted as, a ₁) length be 1, can be expressed as 0 or 1.Information bit B(is denoted as, b ₁b ₂) length be 2, can be expressed as 00,11,10,01.Thereby information bit C(is denoted as, a ₁b ₁b ₂) can be expressed as 000,111,010,101,011,100,001,110, at this

in the planisphere of rank, can identify this information bit C by four constellation point,, sign mapping [000] and [111] is all mapped in same constellation point, sign mapping [001] and [110] is all mapped in same constellation point, sign mapping [011] and [100] is all mapped in same constellation point, and sign mapping [010] and [101] is all mapped in same constellation point.Therefore, for example, a sending at the first time slot when base station ₁=0 o'clock, 430 needs of processing unit were at a ₁in=0 sign mapping (planisphere 2), carry out demodulation, the planisphere 2 QPSK constellation (planisphere 3) with thering is Gray code mapping of equal value.

According to the method for the modulation treatment of the embodiment of the present invention, because base station and subscriber equipment can be known the information bit of its transmission, therefore, can get rid of the sign mapping of the information bit that does not comprise its transmission in each constellation point, thereby can reduce the order of modulation of planisphere, economize on resources and expense, improve efficiency of transmission.

Thereafter, can to adopt following methods to calculate corresponding for processing unit 430

in the soft information of each bit, for example, the soft information that bit is 0 is positive infinity or a very large positive number; Bit is that 1 soft information is minus infinity or a very little negative.

Thereafter, processing unit 430 can be to obtaining information bit π ₂(B) soft information is carried out deinterleaving processing.

Thereafter, processing unit 430 can adopt and have Gray code mapping

rank planisphere is to this signal Y ²the system of separating is processed, and obtains bit sequence π ₃, and calculate π (P) ₃(P) soft information.Thereafter, to π ₃(P) soft information is carried out deinterleaving processing, and the π after deinterleaving is processed ₃(P) soft information and π ₂(B) soft information is for example delivered to, and decoding is carried out in the decoding of LDPC systematic code, obtains the K after decoding ₂individual information bit

in embodiments of the present invention, the process that the soft information of check digit after process according to deinterleaving base station and the soft information of information bit B are carried out decoding processing can be same as the prior art, and here, for fear of repeating, the description thereof will be omitted.

Above, enumerated the processing procedure of base station to the signal from via node, subscriber equipment is similar to the above process to the processing procedure of the signal from via node, and for fear of repeating, the description thereof will be omitted here.

Fig. 4 shows q ₁=q ₂=1(symmetric channel situation) in, in the LDPC that is 3/4 based on code check when coding,, the wireless both-way trunk network of method of transmission information that uses the embodiment of the present invention is performance simulation result and the comparison diagram of wireless both-way trunk network performance simulation result under rayleigh fading channel that uses the method for the transmission information based on bit XOR under rayleigh fading channel.As shown in Figure 4, in the code word error rate, be 10 ^-5situation under, the method for the transmission information of the embodiment of the present invention is compared with the method for transmission information based on bit XOR, can make signal to noise ratio (Es/No) promote 1dB.Owing to being symmetric channel, so base station and user's decoding performance is consistent.

Fig. 5 shows q ₁=1, q ₂=3(nonsymmetric channel situation) in, in the LDPC that is 3/4 based on code check when coding,, the wireless both-way trunk network of method of transmission information that uses the embodiment of the present invention is performance simulation result and the comparison diagram of wireless both-way trunk network performance simulation result under rayleigh fading channel that uses the method for the transmission information based on bit XOR under rayleigh fading channel.Owing to being nonsymmetric channel, so the decoding performance of base station and subscriber equipment is inconsistent.Simulation result shows, in the code word error rate, is 10 ^-5time, in base station side, the method for the transmission information of the embodiment of the present invention is compared with the method for transmission information based on bit XOR, can make signal to noise ratio promote 1.57dB; And in user equipment side, the method for the transmission information of the embodiment of the present invention is compared with the method for transmission information based on bit XOR, can make signal to noise ratio 0.2dB.

Alternatively, the first planisphere is for the modulation treatment of this first transmission ends to this first information, the second planisphere is for the modulation treatment of this second transmission ends to this second information, the 4th planisphere is for carrying out demodulation process to the 4th information, the order of modulation of the 4th planisphere is the order of modulation of this first planisphere and the order of modulation sum of this second planisphere, and

This carries out demodulation process according to this first information to the 3rd information, comprising:

According to this first information, the 4th planisphere is carried out to the second processing, to remove the constellation point that does not comprise the sign mapping corresponding with this first information in the 4th planisphere;

According to remaining constellation point, the 4th information is carried out to demodulation process; And

For according to the 4th planisphere, this second sub-information is carried out to demodulation process.

Specifically, in embodiments of the present invention, via node can also utilize

rank planisphere carries out modulation treatment, and now, on planisphere, each point only comprises a sign mapping, thereby, with Y ¹in i receive signal

for example, transmitted bit is corresponding thereto $Q_i=[{\mathrm{\&pi;}}_{1,(i-1){\mathrm{<figure-callout\; id="1"\; label="q"\; filenames="HDA00002066955300021.png,HDA00002066955300031.png"\; state="\{\{state\}\}">q</figure-callout>}}_1+1}\left(A\right),...,{\mathrm{\&pi;}}_{1,i{q}_1}\left(A\right),{\mathrm{\&pi;}}_{2,(i-1)q_2+1}\left(B\right),...,{\mathrm{\&pi;}}_{2,{\mathrm{iq}}_2}\left(B\right)],$ Processing unit 430 utilizes known π ₁(A) (specifically, be basis

the sign mapping comprising from this constellation point, remove and π ₁(A) corresponding sign mapping, thus can obtain this with

corresponding sign mapping.Thereby demodulation process can be carried out in base station in this sign mapping, obtains

More than enumerated, when transmission ends is respectively subscriber equipment and base station according to the detailed process of the method for the transmission information of the embodiment of the present invention, should be understood that above process is equally applicable to the communication between base station and base station, subscriber equipment and subscriber equipment and other equipment.For example, when the different user in same community wishes to realize fast information interaction by via node, now, can substitute above-mentioned base station with another one subscriber equipment, thereby can effectively improve systematic function.Again for example, information interaction can be carried out by via node in the base station of different districts, now, can substitute above-mentioned subscriber equipment with another one base station, thereby can effectively improve systematic function.

It according to the device 400 of the transmission information of the embodiment of the present invention, is the subject of implementation in the method 200 of the embodiment of the present invention, and, each unit in the device 400 of this transmission information and module and above-mentioned other operations and/or function are respectively in order to realize the corresponding flow process of the method 200 in Fig. 6, for simplicity, do not repeat them here.

According to the device of the transmission information of the embodiment of the present invention, utilize from the information of two source nodes feature of side information each other, after being synthesized, two information encode, and can utilize side information can effectively expand the Hamming distance of code word.Meanwhile, utilize the feature of systematic code, via node can carry out combined modulation to two information, and utilize side information to optimize the sign mapping of planisphere, make two information when sharing same planisphere, to keep minimum euclidean distance to maximize, and make sign be mapped as Gray code.Thereby even in nonsymmetric channel situation, two source nodes also can make full use of side information at the second time slot and recover exactly information needed separately.

Should be understood that term "and/or" herein, is only a kind of incidence relation of describing affiliated partner, and expression can exist three kinds of relations, and for example, A and/or B, can represent: individualism A exists A and B, these three kinds of situations of individualism B simultaneously.In addition, character "/", generally represents that forward-backward correlation is to liking a kind of relation of "or" herein.

Should understand, in various embodiment of the present invention, the size of the sequence number of above-mentioned each process does not also mean that the priority of execution sequence, and the execution sequence of each process should determine with its function and internal logic, and should not form any restriction to the implementation process of the embodiment of the present invention.

Those of ordinary skills can recognize, unit and the algorithm steps of each example of describing in conjunction with embodiment disclosed herein, can realize with the combination of electronic hardware or computer software and electronic hardware.These functions are carried out with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can specifically should be used for realizing described function with distinct methods to each, but this realization should not thought and exceeds scope of the present invention.

Those skilled in the art can be well understood to, and for convenience and simplicity of description, the specific works process of the system of foregoing description, device and unit, can, with reference to the corresponding process in preceding method embodiment, not repeat them here.

In the several embodiment that provide in the application, should be understood that disclosed system, apparatus and method can realize by another way.For example, device embodiment described above is only schematic, for example, the division of described unit, be only that a kind of logic function is divided, during actual realization, can have other dividing mode, for example a plurality of unit or assembly can in conjunction with or can be integrated into another system, or some features can ignore, or do not carry out.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, indirect coupling or the communication connection of device or unit can be electrically, machinery or other form.

The described unit as separating component explanation can or can not be also physically to separate, and the parts that show as unit can be or can not be also physical locations, can be positioned at a place, or also can be distributed in a plurality of network element.Can select according to the actual needs the object that son sign is shone upon or all the present embodiment scheme is realized in unit wherein.

In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, can be also that the independent physics of unit exists, and also can be integrated in a unit two or more unit.

If described function usings that the form of SFU software functional unit realizes and during as production marketing independently or use, can be stored in a computer read/write memory medium.Understanding based on such, the son sign mapping of the son sign mapping that technical scheme of the present invention contributes to prior art in essence in other words or this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprise that some instructions are with so that a computer equipment (can be personal computer, server, or the network equipment etc.) carry out the whole or sub-sign mapping step of method described in each embodiment of the present invention.And aforesaid storage medium comprises: various media that can be program code stored such as USB flash disk, portable hard drive, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CDs.

The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of described claim.

Claims (20)

1. a method for transmission information, is characterized in that, described method comprises:

Obtain from the first information of the first transmission ends with from the second information of the second transmission ends;

To the processing of encoding of the described first information and described the second information, to generate the 3rd information, wherein, described the 3rd information comprise first codeword information corresponding with the described first information, with corresponding the second codeword information and the check digit information of described the second information;

Described the 3rd information is carried out to modulation treatment, to generate the 4th information;

To described the first transmission ends and described the second transmission ends, send described the 4th information, so that described the first transmission ends is obtained described the second information after described the 4th information being carried out to decoding demodulation process according to the described first information, described the second transmission ends is obtained the described first information after described the 4th information being carried out to decoding demodulation process according to described the second information;

Wherein, described described the 3rd information is carried out to modulation treatment, comprising:

Described the first codeword information and the second codeword information are carried out to combined modulation processing;

Described check digit information is carried out separately to modulation treatment.

2. method according to claim 1, is characterized in that, the first planisphere is for the modulation treatment of described the first transmission ends to the described first information, and the second planisphere is used for the modulation treatment of described the second transmission ends to described the second information, and

Describedly described the first codeword information and the second codeword information are carried out to combined modulation process and comprise:

According to the 3rd planisphere, described the first codeword information and the second codeword information are carried out to combined modulation processing, the order of modulation of described the 3rd planisphere is the larger side of numerical value in the order of modulation of described the first planisphere and the order of modulation of described the second planisphere, and each the sign mapping in described the 3rd planisphere comprises the second son sign mapping that is used to indicate the first son sign mapping of the described first information and is used to indicate described the second information;

Described described check digit information modulated and comprised separately:

According to the 4th planisphere, described check digit information is carried out to modulation treatment, the order of modulation of described the 4th planisphere be the order of modulation of described the first planisphere and the order of modulation of described the second planisphere and.

3. method according to claim 2, is characterized in that, in the identical sign mapping of described the first son sign mapping, described in each, the second son sign mapping is Gray code mapping each other,

In the identical sign mapping of described the second son sign mapping, described in each, the first son sign mapping is Gray code mapping each other.

4. according to the method in claim 2 or 3, it is characterized in that, the minimum euclidean distance that described the first son sign is shone upon between identical constellation point is maximization distance,

The minimum euclidean distance that described the second son sign is shone upon between identical constellation point is maximization distance.

5. according to the method described in any one in claim 1 to 4, it is characterized in that, described to the processing of encoding of the described first information and described the second information, comprising:

To the described first information and described the second information via the systematic code processing of encoding.

6. a method for transmission information, is characterized in that, described method comprises:

The first transmission ends sends the first information to via node, so that described via node is to the described first information first codeword information corresponding with the described first information with generation after the processing of encoding from the second information of the second transmission ends, second codeword information and the check digit information corresponding with described the second information;

Receive the 4th information that described via node sends, described the 4th information comprises that the first sub-information and described via node that described via node carries out generating after combined modulation is processed to described the first codeword information and the second codeword information carry out separately the second sub-information generating after modulation treatment to described check digit information;

According to the described first information, described the first sub-information is carried out to demodulation process;

Described the second sub-information is carried out to demodulation process, with according to the second information described in described the first sub-information after demodulation process and the second sub-acquisition of information after demodulation process.

7. method according to claim 6, it is characterized in that, the first planisphere is for the modulation treatment of described the first transmission ends to the described first information, the second planisphere is for the modulation treatment of described the second transmission ends to described the second information, the 3rd planisphere is for carrying out demodulation process to described the first sub-information, the order of modulation of described the 3rd planisphere is the larger side of numerical value in the order of modulation of described the first planisphere and the order of modulation of described the second planisphere, the 4th planisphere is for carrying out demodulation process to described the second sub-information, the order of modulation of described the 4th planisphere is the order of modulation of described the first planisphere and the order of modulation sum of described the second planisphere, and

Described according to the described first information, described the first sub-information is carried out to demodulation process, comprising:

According to the described first information, the 3rd planisphere is carried out to the first processing, so that only retain the first son sign mapping sign mapping corresponding with the described first information in described the 3rd planisphere, described the first son sign mapping is in described sign mapping, to be used to indicate the part of the described first information;

According to the second son sign mapping in the sign mapping retaining, described the first sub-information is carried out to demodulation process, described the second son sign mapping is in described sign mapping, to be used to indicate the part of described the second information; And

Describedly described the second sub-information carried out to demodulation process comprise:

According to described the 4th planisphere, described the second sub-information is carried out to demodulation process.

8. method according to claim 7, is characterized in that, in the identical sign mapping of described the first son sign mapping, described in each, the second son sign mapping is Gray code mapping each other,

In the identical sign mapping of described the second son sign mapping, described in each, the first son sign mapping is Gray code mapping each other.

9. according to the method described in claim 7 or 8, it is characterized in that, the minimum euclidean distance that described the first son sign is shone upon between identical constellation point is maximization distance,

The minimum euclidean distance that described the second son sign is shone upon between identical constellation point is maximization distance.

10. method according to claim 6, it is characterized in that, the first planisphere is for the modulation treatment of described the first transmission ends to the described first information, the second planisphere is for the modulation treatment of described the second transmission ends to described the second information, the 4th planisphere is for carrying out demodulation process to described the 4th information, the order of modulation of described the 4th planisphere is the order of modulation of described the first planisphere and the order of modulation sum of described the second planisphere, and

Described according to the described first information, described the first sub-information is carried out to demodulation process, comprising:

According to the described first information, the 4th planisphere is carried out to the second processing, to remove the constellation point that does not comprise the sign mapping corresponding with the described first information in described the 4th planisphere;

According to remaining constellation point, described the first sub-information is carried out to demodulation process; And

Describedly described the second sub-information carried out to demodulation process comprise:

According to described the 4th planisphere, described the second sub-information is carried out to demodulation process.

The device of 11. 1 kinds of transmission informations, is characterized in that, described device comprises:

Acquiring unit, for obtaining from the first information of the first transmission ends with from the second information of the second transmission ends, and transmits the described first information and described the second information to coding unit;

Coding unit, for obtaining the described first information and described the second information from described acquiring unit, and to the processing of encoding of the described first information and described the second information, to generate the 3rd information, and transmit described the 3rd information to modulating unit, wherein, described the 3rd information comprise first codeword information corresponding with the described first information, with corresponding the second codeword information and the check digit information of described the second information;

Modulating unit, for obtain described the 3rd information from described coding unit, and carries out modulation treatment to described the 3rd information, to generate the 4th information, and transmits described the 4th information to transmitting element;

Transmitting element, for obtaining described the 4th information from described modulating unit, and send described the 4th information to described the first transmission ends and described the second transmission ends, so that described the first transmission ends is obtained described the second information after described the 4th information being carried out to decoding demodulation process according to the described first information, described the second transmission ends is obtained the described first information after described the 4th information being carried out to decoding demodulation process according to described the second information;

Wherein, described modulating unit specifically for:

Described the first codeword information and the second codeword information are carried out to combined modulation processing;

Described check digit information is carried out separately to modulation treatment.

12. devices according to claim 11, is characterized in that, the first planisphere is for the modulation treatment of described the first transmission ends to the described first information, and the second planisphere is used for the modulation treatment of described the second transmission ends to described the second information, and

Described modulating unit specifically for:

According to the 3rd planisphere, described the first codeword information and described the second codeword information are carried out to combined modulation processing, the order of modulation of described the 3rd planisphere is the larger side of numerical value in the order of modulation of described the first planisphere and the order of modulation of described the second planisphere, and each the sign mapping in described the 3rd planisphere comprises the second son sign mapping that is used to indicate the first son sign mapping of the described first information and is used to indicate described the second information;

According to the 4th planisphere, described check digit information is carried out to modulation treatment, the order of modulation of described the 4th planisphere be the order of modulation of described the first planisphere and the order of modulation of described the second planisphere and.

13. devices according to claim 12, is characterized in that, in the identical sign mapping of described the first son sign mapping, described in each, the second son sign mapping is Gray code mapping each other,

In the identical sign mapping of described the second son sign mapping, described in each, the first son sign mapping is Gray code mapping each other.

14. according to the device described in claim 12 or 13, it is characterized in that, the minimum euclidean distance that described the first son sign is shone upon between identical constellation point is maximization distance,

The minimum euclidean distance that described the second son sign is shone upon between identical constellation point is maximization distance.

15. according to claim 11 to the device described in any one in 14, it is characterized in that, described coding unit specifically for to the described first information and described the second information via the systematic code processing of encoding.

The device of 16. 1 kinds of transmission informations, is characterized in that, described device comprises:

Transmitting element, be used for making the first transmission ends to send the first information to via node, so that described via node is to the described first information first codeword information corresponding with the described first information with generation after the processing of encoding from the second information of the second transmission ends, second codeword information and the check digit information corresponding with described the second information;

Receiving element, the 4th information sending for receiving described via node, and transmit described the 4th information to processing unit, described the 4th information comprises that the first sub-information and described via node that described via node carries out generating after combined modulation is processed to described the first codeword information and the second codeword information carry out separately the second sub-information generating after modulation treatment to described check digit information;

Processing unit, for obtain described the 4th information from described receiving element, and according to the described first information, carries out demodulation process to described the first sub-information;

For described the second sub-information is carried out to demodulation process, with according to the second information described in described the first sub-information after demodulation process and the second sub-acquisition of information after demodulation process.

17. devices according to claim 16, it is characterized in that, the first planisphere is for the modulation treatment of described the first transmission ends to the described first information, the second planisphere is for the modulation treatment of described the second transmission ends to described the second information, the 3rd planisphere is for carrying out demodulation process to described the first sub-information, the order of modulation of described the 3rd planisphere is the larger side of numerical value in the order of modulation of described the first planisphere and the order of modulation of described the second planisphere, the 4th planisphere is for carrying out demodulation process to described the second sub-information, the order of modulation of described the 4th planisphere is the order of modulation of described the first planisphere and the order of modulation sum of described the second planisphere, and

Described processing unit specifically for:

According to the described first information, according to the described first information, the 3rd planisphere is carried out to the first processing, so that only retain the first son sign mapping sign mapping corresponding with the described first information in described the 3rd planisphere, described the first son sign mapping is in described sign mapping, to be used to indicate the part of the described first information;

According to the second son sign mapping in the sign mapping retaining, described the first sub-information is carried out to demodulation process, described the second son sign mapping is in described sign mapping, to be used to indicate the part of described the second information; And

According to described the 4th planisphere, described the second sub-information is carried out to demodulation process.

18. devices according to claim 17, is characterized in that, in the identical sign mapping of described the first son sign mapping, described in each, the second son sign mapping is Gray code mapping each other,

In the identical sign mapping of described the second son sign mapping, described in each, the first son sign mapping is Gray code mapping each other.

19. according to the device described in claim 17 or 18, it is characterized in that, the minimum euclidean distance that described the first son sign is shone upon between identical constellation point is maximization distance,

The minimum euclidean distance that described the second son sign is shone upon between identical constellation point is maximization distance.

20. devices according to claim 16, it is characterized in that, the first planisphere is for the modulation treatment of described the first transmission ends to the described first information, the second planisphere is for the modulation treatment of described the second transmission ends to described the second information, the 4th planisphere is for carrying out demodulation process to described the 4th information, the order of modulation of described the 4th planisphere is the order of modulation of described the first planisphere and the order of modulation sum of described the second planisphere, and

Described processing unit specifically for:

According to the described first information, the 4th planisphere is carried out to the second processing, to remove the constellation point that does not comprise the sign mapping corresponding with the described first information in described the 4th planisphere;

According to remaining constellation point, described the 4th information is carried out to demodulation process; And

According to described the 4th planisphere, described the second sub-information is carried out to demodulation process.

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