CN107294690A - A kind of modulation symbol transmission method and transmission equipment - Google Patents
A kind of modulation symbol transmission method and transmission equipment Download PDFInfo
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- CN107294690A CN107294690A CN201610225408.8A CN201610225408A CN107294690A CN 107294690 A CN107294690 A CN 107294690A CN 201610225408 A CN201610225408 A CN 201610225408A CN 107294690 A CN107294690 A CN 107294690A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
- H04L1/0011—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding applied to payload information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/36—Modulator circuits; Transmitter circuits
Abstract
A kind of modulation symbol transmission method and transmission equipment, to reduce the error probability that receiving device detects the bit sequence to be sent of the transmission equipment obtained by modulation symbol, improve system communication performance.This method includes：Modulation system of the equipment according to setting is sent, bit sequence to be sent is modulated into M modulation symbol, M is the integer more than 1；Send equipment and determine M resource unit, by M modulation symbol one-to-one mapping to M resource unit, and be sent to receiving device.
Description
Technical field
The present invention relates to wireless communication field, more particularly to a kind of modulation symbol transmission method and transmission equipment.
Background technology
In existing wireless communications technology, as shown in figure 1, generally send equipment is modulated into a modulation symbol by bit sequence to be sent, the modulation symbol is mapped on a resource unit and is transferred to receiving device.But the modulation symbol that transmission equipment is transmitted easily is influenceed by many factors such as radio channel path loss, shadow effect, multipath fadings, so that the Signal to Interference plus Noise Ratio for the modulation symbol that receiving device is received on single resource unit is relatively low, cause receiving device to detect that the error probability of the bit sequence obtained is higher by modulation symbol, have a strong impact on the reliability of communication.
In order to reduce the error probability that receiving device detects bit sequence, lift the reliability of communication, existing wireless communications system can be communicated using spread spectrum, as shown in Figure 2, send equipment and bit sequence to be sent is modulated into a modulation symbol, the modulation symbol is multiplied by respectively after different real numbers, obtained different products are respectively mapped to be transferred to receiving device on multiple resource units.
In the scheme communicated according to spread spectrum, by the signal transmitted on each resource unit is the product of same modulation symbol and real number, the transmission performance of the program is equal to all is transmitted same modulation symbol on all resource units.Modulation symbol carries the information of each bit in bit sequence to be sent, because the reliability difference of the information of the different bits carried in modulation symbol is larger, so that the detection performance of receiving device is influenceed by the minimum bit information of reliability, the reliability difference problem that the program is not directed to bit information entrained by modulation symbol does any improvement.Therefore, in the scheme communicated according to spread spectrum, receiving device detects that the Average Error Probabilities of the bit sequence to be sent of the transmission equipment obtained are still larger by modulation symbol.
The content of the invention
The embodiments of the invention provide a kind of modulation symbol transmission method and transmission equipment, to reduce the error probability that receiving device detects the bit sequence to be sent of the transmission equipment obtained by modulation symbol, system communication performance is improved.
In a first aspect, a kind of modulation symbol transmission method provided in an embodiment of the present invention, including：
Modulation system of the equipment according to setting is sent, bit sequence to be sent is modulated into M modulation symbol, the M is the integer more than 1；
The transmission equipment determines M resource unit, by the M modulation symbol one-to-one mapping to the M resource unit, and is sent to receiving device.
Wherein, modulation system refers to the modulation technique based on use, the used modulation system when being modulated to bit sequence, and bit sequence to be sent can be modulated into the signal with amplitude and phase by modulation system, the signal is referred to as modulation symbol with a complex representation, the plural number.Bit sequence to be sent refers to the sequence that several bits are rearranged according to certain order, and the amount of bits that bit sequence to be sent is included is equal to the order of modulation of the modulation system of setting.
So, equipment is sent by the way that bit sequence to be sent is modulated into multiple modulation symbols, so that the reliability for sending the bit information that equipment carries the modulation symbol for being sent to receiving device is equalized, improve the reliability difference between the different bit informations that modulation symbol is carried, and then the error probability that receiving device detects the bit sequence to be sent of the transmission equipment obtained by modulation symbol is reduced, improve system communication performance.
In a kind of possible implementation, the modulation system for sending equipment according to setting, the method that bit sequence to be sent is modulated into M modulation symbol includes：
The transmission equipment is put in order according to M kinds bit position respectively, and the bit position in the bit sequence to be sent is rearranged, and obtains M bit sequences to be modulated；
The modulation system that equipment is sent according to the setting, is modulated to each bit sequence to be modulated in the M bit sequences to be modulated, obtains the M modulation symbol respectively.
So, equipment is sent by being resequenced to bit sequence to be sent, obtain multiple bit sequences to be modulated, and then multiple bit sequences to be modulated can obtain multiple modulation symbols by modulation, realize that the reliability for sending the bit information that equipment carries the modulation symbol for being sent to receiving device is equalized, improve the reliability difference between the different bit informations that modulation symbol is carried.
In a kind of possible implementation, before the transmission equipment is modulated to each bit sequence to be modulated in the M bit sequences to be modulated respectively, this method also includes：
The bit sequence to be modulated for sending equipment selection setting number from the M bit sequences to be modulated；The setting number is less than or equal to the M；
For each bit sequence to be modulated in the bit sequence to be modulated of the setting number, the transmission equipment carries out inversion operation to the bit of setting position in each bit sequence to be modulated.
So, further realize that the reliability for the bit information for carrying the modulation symbol for being sent to receiving device is equalized, improve the reliability difference between the different bit informations that modulation symbol is carried.
In a kind of possible implementation, the equipment that sends is modulated to each bit sequence to be modulated in the M bit sequences to be modulated respectively, and obtaining the method for the M modulation symbol includes：
The mapping relations that equipment is sent according to each bit sequence and bit sequence and modulation symbol to be modulated, obtain a modulation symbol by each bit sequence mapping to be modulated respectively；
Wherein, bit sequence in the mapping relations of the bit sequence and modulation symbol includes the bit sequence to be modulated, the mapping relations of the bit sequence and modulation symbol are that a bit sequence is mapped to a modulation symbol, and the amount of bits that the bit sequence is included is equal to the order of modulation of the modulation system of the setting.
So, equipment is sent by searching the mapping relations of bit sequence and modulation symbol, realizes and bit sequence to be modulated modulation is obtained into its corresponding modulation symbol.
In a kind of possible implementation, the transmission equipment includes the method that bit sequence to be sent is modulated into M modulation symbol：
The mapping relations that equipment is sent according to the bit sequence and bit sequence and modulation symbol to be sent, M modulation symbol is obtained by the bit sequence mapping to be sent；
Wherein, bit sequence in the mapping relations of the bit sequence and modulation symbol includes the bit sequence to be sent, the mapping relations of the bit sequence and modulation symbol are that a bit sequence is mapped to M modulation symbol, and the amount of bits that the bit sequence is included is equal to the order of modulation of the modulation system of the setting.
So, equipment is sent by searching the mapping relations of bit sequence and modulation symbol, realizes and bit sequence to be sent modulation is obtained into its multiple modulation symbol of correspondence.
In a kind of possible implementation, the modulation system of the setting includes at least two modulation systems in a kind of modulation system or order of modulation identical Different Modulations.
Second aspect, a kind of modulation symbol transmission method provided in an embodiment of the present invention, including：
Receiving device, which is received, sends the M modulation symbol that device map is sent on M resource unit, and the M is the integer more than 1, and the M modulation symbol is obtained bit sequence to be sent modulation according to the modulation system of setting by the transmission equipment；
The receiving device determines the detection information of the bit sequence to be sent of the transmission equipment according to the M modulation symbol.
So, bit sequence to be sent is modulated into multiple modulation symbols due to sending equipment, so that the reliability for sending the bit information that equipment carries the modulation symbol for being sent to receiving device is equalized, improve the reliability difference between the different bit informations that modulation symbol is carried, and then the error probability that receiving device detects the bit sequence to be sent of the transmission equipment obtained by modulation symbol is reduced, improve system communication performance.
In a kind of possible implementation, the detection information of the bit sequence to be sent for sending equipment includes the hard decision result of the bit sequence to be sent and/or the Soft Inform ation of the bit sequence to be sent.
The third aspect, the embodiment of the present invention provides a kind of transmission equipment, and the transmission equipment has the function of realizing and equipment behavior is sent in the above method.The function can be realized by hardware, and corresponding software can also be performed by hardware and is realized.The hardware or software include one or more modules corresponding with above-mentioned functions.
In a kind of optional implementation, the structure of the transmission equipment includes processor and transmitter, and the processor is configured as supporting that sending equipment performs corresponding function in the above method；The transmitter, the data or message being related to for sending in the above method；The transmission equipment can also include memory, and the memory is used to couple with processor, and it, which is preserved, sends the necessary programmed instruction of equipment and data；The transmission equipment can also include receiver, and the receiver is used to receive message or data.
Fourth aspect, the embodiment of the present invention provides a kind of receiving device, and the receiving device has the function for receiving device behavior in the above method of realizing.The function can be realized by hardware, and corresponding software can also be performed by hardware and is realized.The hardware or software include one or more modules corresponding with above-mentioned functions.
In a kind of optional implementation, the structure of the receiving device includes receiver and processor, the receiver, the data or message being related to for receiving in the above method；The processor is configured as supporting receiving device to perform corresponding function in the above method；The receiving device can also include memory, and the memory is used to couple with processor, and it preserves the necessary programmed instruction of receiving device and data；The receiving device can also include transmitter, and the transmitter is used to send message or data.
5th aspect, the embodiment of the present invention provides a kind of wireless communication system, and the wireless communication system includes the transmission equipment and receiving device described in above-mentioned first aspect to fourth aspect either side.
6th aspect, the embodiments of the invention provide a kind of computer-readable storage medium, for saving as the computer software instructions used in the transmission equipment described in above-mentioned first aspect to the either side of the 5th aspect, it, which is included, is used to perform the program designed by above-mentioned aspect.
7th aspect, the embodiments of the invention provide a kind of computer-readable storage medium, for saving as the computer software instructions used in the receiving device described in above-mentioned first aspect to the either side of the 5th aspect, it, which is included, is used to perform the program designed by above-mentioned aspect.
Eighth aspect, the embodiments of the invention provide a kind of chip, for performing the method performed by the transmission equipment described in above-mentioned first aspect to the either side of the 5th aspect.
9th aspect, the embodiments of the invention provide a kind of chip, for performing the method performed by the receiving device described in above-mentioned first aspect to the either side of the 5th aspect.
In technical scheme provided in an embodiment of the present invention, send equipment and bit sequence to be sent is modulated into multiple modulation symbols, and the plurality of modulation symbol is transferred to receiving device by multiple resource units.In this programme send equipment by by bit sequence to be sent by being modulated into multiple modulation symbols, so that the reliability for sending the bit information that equipment carries the modulation symbol of transmission is equalized, improve the reliability difference between the different bit informations that modulation symbol is carried, and then the error probability that receiving device detects the bit sequence to be sent of the transmission equipment obtained by modulation symbol is reduced, improve system communication performance.
Brief description of the drawings
A kind of modulation symbol transmission method schematic diagram that Fig. 1 provides for prior art；
A kind of modulation symbol transmission method schematic diagram that Fig. 2 provides for prior art；
Fig. 3 is a kind of modulation symbol transmission method schematic flow sheet provided in an embodiment of the present invention；
Fig. 4 is a kind of modulation symbol provided in an embodiment of the present invention and resource unit mapping schematic diagram；
Fig. 5 is a kind of modulation symbol transmission method schematic flow sheet provided in an embodiment of the present invention；
Fig. 6 is a kind of transmission device structure schematic diagram provided in an embodiment of the present invention；
Fig. 7 is a kind of transmission device structure schematic diagram provided in an embodiment of the present invention；
Fig. 8 is a kind of receiving device structural representation provided in an embodiment of the present invention；
Fig. 9 is a kind of receiving device structural representation provided in an embodiment of the present invention；
Figure 10 is a kind of wireless communication system architecture schematic diagram provided in an 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, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made belongs to the scope of protection of the invention.
The embodiment of the present invention provides a kind of modulation symbol transmission method and sends equipment, sends equipment and bit sequence to be sent is modulated into multiple modulation symbols, and the plurality of modulation symbol is transferred into receiving device by multiple resource units.In this programme send equipment by by bit sequence to be sent by being modulated into multiple modulation symbols, so that the reliability for sending the bit information that equipment carries the modulation symbol of transmission is equalized, improve the reliability difference between the different bit informations that modulation symbol is carried, and then the error probability that receiving device detects the bit sequence to be sent of the transmission equipment obtained by modulation symbol is reduced, improve system communication performance.Wherein, method and apparatus is that, based on same inventive concept, because the principle that method and apparatus solves problem is similar, therefore the implementation of apparatus and method for can be repeated part and repeated no more with cross-reference.
Technical scheme provided in an embodiment of the present invention can apply to wireless communication system, it is adaptable to send the scene that equipment sends information to receiving device.By taking Long Term Evolution (Long Term Evolution, LTE) system as an example, for uplink, it can be terminal device to send equipment, and receiving device can be base station；For downlink transfer, it can be base station to send equipment, and receiving device can be terminal device.
Wherein, the communication standard of the wireless communication system of application of the embodiment of the present invention includes but is not limited to：Global system for mobile communications (Global System of Mobile communication,GSM),CDMA (Code Division Multiple Access,CDMA)IS-95,CDMA (Code Division Multiple Access,CDMA)2000,TD SDMA (Time Division-Synchronous Code Division Multiple Access,TD-SCDMA),WCDMA (Wideband Code Division Multiple Access,WCDMA),Time division duplex-Long Term Evolution (Time Division Duplexing-Long Term Evolution,TDD LTE),FDD-Long Term Evolution (Frequency Division Duplexing-Long Term Evolution,FDD LTE),Long Term Evolution-enhancing (Long Term Evolution-Advanced,LTE-advanced),Personal handyphone system (Personal Handy-phone System,PHS),Wireless Fidelity (Wireless Fidelity as defined in 802.11 serial protocols,WiFi),Worldwide interoperability for microwave accesses (Worldwide Interoperability for Microwave Access,WiMAX),And the various radio communication standards of following evolution.
Terminal device can be wireless terminal, and wireless terminal can refer to the equipment for providing a user voice and/or data connectivity, portable equipment with wireless connecting function or other processing equipments for being connected to radio modem.Wireless terminal can be through wireless access network (for example, RAN, Radio Access Network) communicated with one or more core nets, wireless terminal can be mobile terminal, such as mobile phone (or being " honeycomb " phone) and the computer with mobile terminal, for example, it may be portable, pocket, hand-held, built-in computer or vehicle-mounted mobile device, they exchange language and/or data with wireless access network.For example, PCS (Personal Communication Service, PCS) phone, wireless phone, Session initiation Protocol (SIP) phone, WLL (Wireless Local Loop, WLL) stand, the equipment such as personal digital assistant (Personal Digital Assistant, PDA).Wireless terminal is referred to as subscri er unit (Subscriber Unit), subscriber station (Subscriber Station), movement station (Mobile Station), mobile station (Mobile), distant station (Remote Station), access point (Access Point), remote terminal (Remote Terminal), access terminal (Access Terminal), user terminal (User Terminal), user agent (User Agent), user equipment (User Device), or user equipment (User Equipment).
For gsm system, base station can include base transceiver station (Base Transceiver Station, BTS) and/or base station controller (Base Station Controller, BSC)；For TD-SCDMA system, WCDMA system, base station may include node B (NodeB, NB) and/or radio network controller (Radio Network Controller, RNC), for LTE system, and base station can be eNB.
A kind of modulation symbol transmission method provided in an embodiment of the present invention is described in detail below.
As shown in figure 3, equipment side is being sent, the embodiments of the invention provide a kind of modulation symbol transmission method, including：
Bit sequence to be sent is modulated into M modulation symbol by S301, transmission equipment according to the modulation system of setting, and M is the integer more than 1；
S302, send equipment and determine M resource unit, by M modulation symbol one-to-one mapping to M resource unit, and be sent to receiving device.
In the embodiment of the present invention, the modulation system of setting can include at least two modulation systems in a kind of modulation system or order of modulation identical Different Modulations, and the order of modulation of modulation system is equal to the amount of bits that the bit sequence that the modulation system is modulated is included.Modulation system refers to the modulation technique based on use, the used modulation system when being modulated to bit sequence, one bit sequence is mapped to the mode of modulation symbol, for example with modulation technique for 16 quadrature amplitude modulations (Quadrature Amplitude Modulation, QAM) or 64QAM etc..Bit sequence to be sent refers to the sequence that several bits are rearranged according to certain order, and the amount of bits that bit sequence to be sent is included is equal to the order of modulation of the modulation system of setting；Exemplary, bit sequence to be sent can use { b1, b2..., bLForm, L represents the length of bit sequence to be sent, the quantity for the bit that bit sequence i.e. to be sent is included, L is equal to the order of modulation for the modulation system for sending the setting that equipment is used, by taking the debud mode using 16QAM as an example, the order of modulation of 16QAM debud mode is 4, and the amount of bits that now bit sequence to be sent is included is 4.Bit sequence to be sent can be modulated into by modulation system by the signal with amplitude and phase, the signal is referred to as modulation symbol with a complex representation, the plural number.
Resource unit in the embodiment of the present invention can be running time-frequency resource unit, but with the development of technology, the resource unit in the embodiment of the present invention is not limited in running time-frequency resource unit.In wireless communication field, transfer resource can be distributed in multiple dimensions such as time domain, frequency domain, code domain.By taking LTE system as an example, in time domain, its maximum time quantum is the radio frames that length is 10 milliseconds, the radio frames are divided into the subframe that 10 length are 1 millisecond, each subframe is divided into the time slot that two length are 0.5 millisecond again, each time slot includes 6 or 7 OFDM (Orthogonal Frequency Division Multiplexing, OFDM) symbols.On frequency domain, available frequency resource is partitioned into several subcarriers by system, and each subcarrier takes 15000 hertz of bandwidth on frequency domain.In LTE system, the bandwidth shared by 1 subcarrier of the minimum unit of resource on the 1 OFDM symbol duration and frequency domain in time domain is constituted, referred to as running time-frequency resource unit.
In the embodiment of the present invention, S301 can be realized by following three kinds of schemes.
Scheme one comprises the following steps：
Step one：Send equipment to put in order according to M kinds bit position respectively, the bit position in bit sequence to be sent is rearranged, obtain M bit sequences to be modulated.
Wherein, it can be setting property or randomness that bit position, which puts in order,.
Step 2：Send the bit sequence to be modulated of equipment selection setting number from M bit sequences to be modulated；Each bit sequence to be modulated in bit sequence to be modulated for setting number, sends equipment and carries out inversion operation to the bit of setting position in each bit sequence to be modulated.
Wherein, setting number is less than or equal to M；For different bit sequences to be modulated, the amount of bits that inversion operation is carried out respectively can be the same or different, and the bit position that inversion operation is carried out respectively can be the same or different.
Step 3：Modulation system of the equipment according to setting is sent, each bit sequence to be modulated in M bit sequences to be modulated is modulated respectively, M modulation symbol is obtained.
Wherein, the modulation system being modulated to M bit sequences to be modulated can be at least two modulation systems in a kind of modulation system or order of modulation identical Different Modulations, during using at least two modulation system in Different Modulations, the species of the modulation system of use is less than or equal to M kinds.
Illustration scheme one
It is assumed that the modulation system set is 16QAM, 16QAM order of modulation is 4, and bit sequence to be sent is { b1, b2, b3, b4}.Put in order in step one according to M=2 kinds bit position, to { b1, b2, b3, b4In bit position rearranged, obtain 2 bit sequences to be modulated, be respectively { b3, b1, b4, b2And { b1, b3, b2, b4}.Selected in step 2 to second bit sequence { b to be modulated1, b3, b2, b4In second bit b3With the 4th bit b4Inversion operation is carried out, bit sequence to be modulated is obtainedModulating sequence of bits { b is treated using 16QAM respectively in step 33, b1, b4, b2AndIt is modulated, obtains 2 modulation symbol S1And S2。
Optionally, equipment is sent in step 3 each bit sequence mapping to be modulated can be obtained into a modulation symbol respectively, that is, obtain the M modulation symbol with M bit sequence one-to-one mappings to be modulated by searching the mapping relations of bit sequence and modulation symbol.Wherein, bit sequence in the mapping relations of bit sequence and modulation symbol includes bit sequence to be modulated, the mapping relations of bit sequence and modulation symbol are that a bit sequence is mapped to a modulation symbol, and the amount of bits that bit sequence is included is equal to the order of modulation for the modulation system for sending the setting that equipment is used.
Optionally, equipment is sent according to the modulation system of setting, determines the mapping relations of bit sequence and modulation symbol.By taking binary bits as an example, if the order of modulation of the modulation system set is L, i.e. the bit sequence that the modulation system of the setting is modulated includes L bit, then the bit sequence that the modulation system of the setting is modulated has 2LPlant possible, the modulation symbol for modulating output by the modulation system of the setting has 2LPlant possible, the mapping relations of bit sequence and modulation symbol are obtained according to the modulation system of the setting, bit sequence one modulation symbol of correspondence in the mapping relations.
By the modulation system that sets as exemplified by 16QAM, 16QAM order of modulation is the bit sequence { b that 4,16QAM is modulated1, b2, b3, b4Can have 24=16 kinds of possibility, the modulation symbol of 16QAM modulation outputs also has 24=16 kinds of forms may.Exemplary, can be as shown in following table one according to the mapping relations of the modulation system 16QAM bit sequences determined and modulation symbol, wherein a and b relation meet a2+b2=1, for example
Table one
| Bit sequence { b1, b2, b3, b4} | The modulation symbol of bit sequence mapping |
| 0000 | -b+b*j |
| 0001 | a+b*j |
| 0010 | -a+b*j |
| 0011 | b+b*j |
| 0100 | -b-a*j |
| 0101 | a-b*j |
| 0110 | -a-b*j |
| 0111 | b-a*j |
| 1000 | -b+a*j |
| 1001 | a+a*j |
| 1010 | -a+a*j |
| 1011 | b+a*j |
| 1100 | -b-b*j |
| 1101 | a-b*j |
| 1110 | -a-b*j |
| 1111 | b-b*j |
In step 3, by inquiry table one, bit sequence { b to be modulated can obtain3, b1, b4, b2Mapping modulation symbol S1, and bit sequence to be modulatedThe modulation symbol S of mapping2.For example, { b3, b1, b4, b2When being { 0,1,1,0 }, by inquiry table one, the modulation symbol S of { 0,1,1,0 } mapping is obtained1For-a-b*j；During for { 1,1,0,0 }, by inquiry table one, the modulation symbol S of { 1,1,0,0 } mapping is obtained2For-b-b*j.
If the modulation system of setting includes at least two modulation systems in the multiple modulation systems of order of modulation identical, the mapping relations of bit sequence and modulation symbol are then determined according to each modulation system respectively, it is that a bit sequence is mapped to a modulation symbol in the bit sequence and the mapping relations of modulation symbol that are determined according to a modulation system, such as one modulation system can determine a mapping relations list being similar to shown in table one.When being modulated according to the mapping relations of the bit sequence of determination and modulation symbol to M bit sequences to be modulated, for a bit sequence to be modulated, it is determined that the modulation system used to it, the modulation symbol that the bit sequence to be modulated maps is determined by searching the corresponding mapping relations list of the modulation system.
Scheme two comprises the following steps：
Step one：Send equipment to put in order according to M kinds bit position respectively, the bit position in bit sequence to be sent is rearranged, obtain M bit sequences to be modulated.
Wherein, it can be setting property or randomness that bit position, which puts in order,.
Step 2：Modulation system of the equipment according to setting is sent, each bit sequence to be modulated in M bit sequences to be modulated is modulated respectively, M modulation symbol is obtained.
Wherein, the modulation system being modulated to M bit sequences to be modulated can be at least two modulation systems in a kind of modulation system or order of modulation identical Different Modulations, during using at least two modulation system in Different Modulations, the species of the modulation system of use is less than or equal to M kinds.
Illustration scheme two
It is assumed that the modulation system set is 16QAM, 16QAM order of modulation is 4, and bit sequence to be sent is { b1, b2, b3, b4}.Put in order in step one according to M=2 kinds bit position, to { b1, b2, b3, b4In bit position rearranged, obtain 2 bit sequences to be modulated, be respectively { b3, b1, b4, b2And { b1, b3, b2, b4}.Modulating sequence of bits { b is treated using 16QAM respectively in step 23, b1, b4, b2And { b1, b3, b2, b4Be modulated, obtain 2 modulation symbol S1And S2。
Optionally, equipment is sent in step 2 each bit sequence mapping to be modulated can be obtained into a modulation symbol respectively, that is, obtain the M modulation symbol with M bit sequence one-to-one mappings to be modulated by searching the mapping relations of bit sequence and modulation symbol.Wherein, bit sequence in the mapping relations of bit sequence and modulation symbol includes bit sequence to be modulated, the mapping relations of bit sequence and modulation symbol are that a bit sequence is mapped to a modulation symbol, and the amount of bits that bit sequence is included is equal to the order of modulation for the modulation system for sending the setting that equipment is used.
Optionally, equipment is sent according to the modulation system of setting, determines the mapping relations of bit sequence and modulation symbol.By taking binary bits as an example, if the order of modulation of the modulation system set is L, i.e. the bit sequence that the modulation system of the setting is modulated includes L bit, then the bit sequence that the modulation system of the setting is modulated has 2LPlant possible, the modulation symbol for modulating output by the modulation system of the setting has 2LPlant possible, the mapping relations of bit sequence and modulation symbol are obtained according to the modulation system of the setting, bit sequence one modulation symbol of correspondence in the mapping relations.
By the modulation system that sets as exemplified by 16QAM, 16QAM order of modulation is the bit sequence { b that 4,16QAM is modulated1, b2, b3, b4Can have 24=16 kinds of possibility, the modulation symbol of 16QAM modulation outputs also has 24=16 kinds of possibility.Exemplary, can as shown in Table 1 according to the mapping relations of the modulation system 16QAM bit sequences determined and modulation symbol, wherein a and b relation meet a2+b2=1, for example
In step 2, by inquiry table one, bit sequence { b to be modulated can obtain3, b1, b4, b2Mapping modulation symbol S1, and bit sequence { b to be modulated1, b3, b2, b4Mapping modulation symbol S2.For example, { b3, b1, b4, b2When being { 0,1,1,0 }, by inquiry table one, the modulation symbol S of { 0,1,1,0 } mapping is obtained1For-a-b*j；{b1, b3, b2, b4When being { 1,0,0,1 }, by inquiry table one, the modulation symbol S of { 1,0,0,1 } mapping is obtained2For a+a*j.
If the modulation system of setting includes at least two modulation systems in the multiple modulation systems of order of modulation identical, the mapping relations of bit sequence and modulation symbol are then determined according to each modulation system respectively, it is that a bit sequence is mapped to a modulation symbol in the bit sequence and the mapping relations of modulation symbol that are determined according to a modulation system, such as one modulation system can determine a mapping relations list being similar to shown in table one.When being modulated according to the mapping relations of the bit sequence of determination and modulation symbol to M bit sequences to be modulated, for a bit sequence to be modulated, it is determined that the modulation system used to it, the modulation symbol that the bit sequence to be modulated maps is determined by searching the corresponding mapping relations list of the modulation system.
Scheme three comprises the following steps：
Mapping relations of the equipment according to bit sequence to be sent and bit sequence and modulation symbol are sent, bit sequence to be sent mapping is obtained into M modulation symbol；
Wherein, bit sequence in the mapping relations of bit sequence and modulation symbol includes bit sequence to be sent, the mapping relations of bit sequence and modulation symbol are that a bit sequence is mapped to M modulation symbol, and the amount of bits that bit sequence is included is equal to the order of modulation of the modulation system of setting.
Optionally, equipment is sent according to the modulation system of setting, determines the mapping relations of bit sequence and modulation symbol.By taking binary bits as an example, if the order of modulation of the modulation system set is L, that is the bit sequence that the modulation system of the setting is modulated includes L bit, there is 2L kinds possibility in the bit sequence that then modulation system of the setting is modulated, the modulation symbol for modulating output by the modulation system of the setting has 2LPlanting may.The mapping relations of bit sequence and modulation symbol are obtained according to the modulation system of the setting, the bit sequence that the mapping relations include has 2LIt is individual, for any one bit sequence, from 2LThe modulation symbol that map as any one bit sequence of M modulation symbol is selected in individual modulation symbol, wherein the selection mode of M modulation symbol of selection can be setting property can also randomness.Therefore, in the mapping relations that bit sequence and modulation symbol are obtained according to the modulation system of setting, any one bit sequence M modulation symbol of correspondence.
Illustration scheme three
By the modulation system that sets as exemplified by 16QAM, 16QAM order of modulation is the bit sequence { b that 4,16QAM is modulated1, b2, b3, b4Can have 24=16 kinds of possibility, the modulation symbol of 16QAM modulation outputs also has 24=16 kinds of forms are possible, and each bit sequence is mapped to two modulation symbols.
Exemplary, can as shown in Table 2 according to the mapping relations of the modulation system 16QAM bit sequences determined and modulation symbol, wherein a and b relation meet a2+b2=1, for example
Table two
Pass through look-up table two, it may be determined that bit sequence { b to be sent1, b2, b3, b4Mapping two modulation symbol S1And S2, for example, { b1, b2, b3, b4When being { 1,0,0,1 }, by look-up table two, the modulation symbol S of { 1,0,0,1 } mapping is obtained1For a+a*j, S2For-b-b*j.
Obtained by above-mentioned three kinds of schemes after M modulation symbol, by the S302 provided in the embodiment of the present invention, sending equipment can be by M obtained modulation symbol one-to-one mapping to M resource unit, and is sent to receiving device.As shown in figure 4, so that M=2, resource unit are running time-frequency resource unit as an example, sending equipment and obtaining 2 modulation symbol S1And S2Afterwards, by modulation symbol S1And S2One-to-one mapping is sent to receiving device on 2 resource units.
Send equipment and modulation symbol is sent to by receiving device by the above method, as shown in figure 5, in receiving device side, the embodiments of the invention provide a kind of modulation symbol transmission method, including：
S501, receiving device, which are received, sends the M modulation symbol that device map is sent on M resource unit, and M is the integer more than 1, and bit sequence to be sent is modulated into and obtained by M modulation symbol by transmission equipment；
S502, receiving device are according to M modulation symbol, it is determined that sending the detection information of the bit sequence to be sent of equipment.
Wherein, the detection information of bit sequence to be sent includes the hard decision result of bit sequence to be sent and/or the Soft Inform ation of bit sequence to be sent.Hard decision result refers to the bit sequence that receiving device judgement is obtained；Soft Inform ation can have several method for expressing.Exemplary, for the bit b in bit sequence to be sent1, it can be expressed as in the Soft Inform ation of receiving deviceWherein P (b1=1) represent receiving device by detecting the b drawn1For 1 probability, P (b1=0) represent receiving device by detecting the b drawn1For 0 probability, then the Soft Inform ation of bit sequence to be sent can be expressed as
The method that receiving device can use joint-detection, determines to send the detection information of the bit sequence to be sent of equipment according to M modulation symbol.The method of detection can include：Receiving device receives M modulation symbol on M resource unit, and M modulation symbol of reception carried out into symbol merging, and receiving device to the symbol obtained after merging by being demodulated to obtain the hard decision result of bit sequence to be sent.Checking the method for detection can also include：Receiving device is soft demodulated to the modulation symbol transmitted on each resource unit respectively, obtain the corresponding Soft Inform ation of difference bit in bit sequence to be sent, the corresponding Soft Inform ation of same bits is merged, finally bit sequence to be sent is recovered using the corresponding Soft Inform ation of different bits after merging.The method of merging such as maximum-ratio combing, maximum-ratio combing is a kind of reception diversity combining method, refers to that the signal after merging is equal to the weighted sum of the signal received on each resource unit.
It should be noted that, the modulation symbol transmission method of receiving device side provided in an embodiment of the present invention, modulation symbol transmission method with transmission equipment side is that, based on consistent thought, the modulation symbol transmission method of receiving device side can combine means of the prior art and realize.
In technical scheme provided in an embodiment of the present invention, send equipment and bit sequence to be sent is modulated into multiple modulation symbols, and the plurality of modulation symbol is sent to receiving device by multiple resource units.In this programme send equipment by by bit sequence to be sent by being modulated into multiple modulation symbols, so that the reliability for sending the bit information that equipment carries the modulation symbol of transmission is equalized, improve the reliability difference between the different bit informations that modulation symbol is carried, and then the error probability that receiving device detects the bit sequence to be sent of the transmission equipment obtained by modulation symbol is reduced, improve system communication performance.
Wireless communication system uses spread spectrum in the embodiment of the present invention, send equipment bit sequence to be sent is modulated into after multiple modulation symbols, the plurality of modulation symbol is sent to by receiving device by the resource unit of quantity identical with modulation symbol, multiple resource units undergo simultaneously the decline of serious radio channel multi-path and interference probability be far smaller than single resource unit experience it is serious decline and interference probability, so as to reduce the risk of modulated signal transmission.The method that receiving device can use joint-detection, with the Signal to Interference plus Noise Ratio for the modulation symbol for lifting reception.Therefore, the error probability that receiving device carries out bit-detection can be reduced using spread spectrum in the embodiment of the present invention, to lift the reliability of communication.
Fig. 6 is a kind of transmission equipment provided in an embodiment of the present invention, the method that the transmission equipment can be provided using the corresponding embodiments of Fig. 3.The transmission equipment 600 includes：Processing module 601 and sending module 602.Wherein,
Processing module 601, for the modulation system according to setting, M modulation symbol is modulated into by bit sequence to be sent, M is the integer more than 1；M resource unit is determined, by M modulation symbol one-to-one mapping to M resource unit；
Sending module 602, for M modulation symbol in the one-to-one mapping of processing module 601 to M resource unit to be sent into receiving device.
Optionally, processing module 601 is according to the modulation system of setting, when bit sequence to be sent is modulated into M modulation symbol, specifically for：
Processing module 601 is put in order according to M kinds bit position respectively, and the bit position in bit sequence to be sent is rearranged, and obtains M bit sequences to be modulated；
Processing module 601 is modulated to each bit sequence to be modulated in M bit sequences to be modulated according to the modulation system of setting, obtains M modulation symbol respectively.
Optionally, before processing module 601 is modulated to each bit sequence to be modulated in M bit sequences to be modulated respectively, it is additionally operable to：
The bit sequence to be modulated of the selection setting number from M bit sequences to be modulated of processing module 601；
The bit of setting position carries out inversion operation in each bit sequence to be modulated in bit sequence to be modulated for setting number, each bit sequence to be modulated of 601 pairs of processing module.
Optionally, processing module 601 is modulated to each bit sequence to be modulated in M bit sequences to be modulated respectively, when obtaining M modulation symbol, including specifically for：
Each bit sequence mapping to be modulated is obtained a modulation symbol by processing module 601 respectively according to the mapping relations of each bit sequence and bit sequence and modulation symbol to be modulated；
Wherein, bit sequence in the mapping relations of bit sequence and modulation symbol includes bit sequence to be modulated, the mapping relations of bit sequence and modulation symbol are that a bit sequence is mapped to a modulation symbol, and the amount of bits that bit sequence is included is equal to the order of modulation of the modulation system of setting.
Optionally, when bit sequence to be sent is modulated into M modulation symbol by processing module 601, specifically for：
Bit sequence to be sent mapping is obtained M modulation symbol by processing module 601 according to the mapping relations of bit sequence to be sent and bit sequence and modulation symbol；
Wherein, bit sequence in the mapping relations of bit sequence and modulation symbol includes bit sequence to be sent, the mapping relations of bit sequence and modulation symbol are that a bit sequence is mapped to M modulation symbol, and the amount of bits that bit sequence is included is equal to the order of modulation of the modulation system of setting.
Optionally, the modulation system of setting includes at least two modulation systems in a kind of modulation system or order of modulation identical Different Modulations.
It should be noted that being schematical, only a kind of division of logic function to the division of unit in the embodiment of the present invention, there can be other dividing mode when actually realizing.In addition, each functional unit in the application each embodiment can be integrated in a processing unit or unit is individually physically present, can also two or more units it is integrated in a unit.Above-mentioned integrated unit can both be realized in the form of hardware, it would however also be possible to employ the form of SFU software functional unit is realized.
If integrated unit is realized using in the form of SFU software functional unit and as independent production marketing or in use, can be stored in a computer read/write memory medium.Understood based on such, the part or all or part of the technical scheme that the technical scheme of the application substantially contributes to prior art in other words can be embodied in the form of software product, the computer software product is stored in a storage medium, including some instructions to cause a computer equipment (can be personal computer, server, or the network equipment etc.) or processor (processor) perform all or part of step of each embodiment method of the application.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disc or CD etc. are various can be with the medium of store program codes.
Based on above example, the embodiment of the present invention additionally provides a kind of transmission equipment, and the method that the transmission equipment can be provided using the corresponding embodiments of Fig. 3 can be and the transmission equipment identical equipment shown in Fig. 6.As shown in fig.7, the transmission equipment 700 includes：Processor 701, transmitter 702, bus 703 and memory 704, wherein：
Processor 701, transmitter 702 and memory 704 are connected with each other by bus 703；Bus 703 can be Peripheral Component Interconnect standard (peripheral component interconnect, PCI) bus or EISA (extended industry standard architecture, EISA) bus etc..Bus can be divided into address bus, data/address bus, controlling bus etc..For ease of representing, only represented in Fig. 7 with a thick line, it is not intended that only one bus or a type of bus.
Sending module 602 in processing module 601 in Fig. 7 in the corresponding diagram 6 of processor 701, Fig. 7 in the corresponding diagram 6 of transmitter 702.The transmission equipment 700 also includes memory 704, for depositing program etc..Specifically, program can include program code, and the program code includes computer-managed instruction.Memory 704 may include random access memory (random access memory, RAM), it is also possible to also including nonvolatile memory (non-volatile memory), for example, at least one magnetic disk storage.Processor 701 performs the application program that memory 704 is deposited, and realizes as above modulation symbol transmission method.
Fig. 8 is a kind of receiving device provided in an embodiment of the present invention, the method that the receiving device can be provided using the corresponding embodiments of Fig. 5.The receiving device 800 includes：Receiving module 801 and processing module 802.Wherein,
Receiving module 801, the M modulation symbol that device map is sent on M resource unit is sent for receiving, and M is the integer more than 1, and M modulation symbol is obtained bit sequence to be sent modulation according to the modulation system of setting by transmission equipment；
Processing module 802, the M modulation symbol received according to receiving module 801, it is determined that sending the detection information of the bit sequence to be sent of equipment.
Optionally, sending the detection information of the bit sequence to be sent of equipment includes the hard decision result of bit sequence to be sent and/or the Soft Inform ation of bit sequence to be sent.
Based on above example, the embodiment of the present invention additionally provides a kind of receiving device, the method that the receiving device can be provided using the corresponding embodiments of Fig. 5, can be and the receiving device identical equipment shown in Fig. 8.As shown in fig.9, the receiving device 900 includes：Receiver 901, processor 902, bus 903 and memory 904, wherein：
Receiver 901, processor 902 and memory 904 are connected with each other by bus 903；For ease of representing, only represented in Fig. 9 with a thick line, it is not intended that only one bus or a type of bus.
Processing module 802 in receiving module 801 in Fig. 9 in the corresponding diagram 8 of receiver 901, Fig. 9 in the corresponding diagram 8 of processor 902.The receiving device 900 also includes memory 904, for depositing program etc..Specifically, program can include program code, and the program code includes computer-managed instruction.Processor 902 performs the application program that memory 904 is deposited, and realizes as above modulation symbol transmission method.
Based on above example, the embodiment of the present invention provides a kind of wireless communication system, as shown in Figure 10, the wireless communication system 1000 includes sending equipment 1001 and receiving device 1002, wherein, sending equipment 1001 is used to realize the function that equipment realization is sent in above-described embodiment, and receiving device 1002 is used for the function of realizing that receiving device is realized in above-described embodiment.
To sum up, embodiments herein provides a kind of modulation symbol transmission method, sends equipment and receiving device, to reduce the error probability that receiving device detects the bit sequence to be sent of the transmission equipment obtained by modulation symbol, improves system communication performance.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creative concept, then other change and modification can be made to these embodiments.So, appended claims are intended to be construed to include preferred embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out the spirit and scope of various changes and modification without departing from the embodiment of the present invention to the embodiment of the present invention.So, if these modifications and variations of the embodiment of the present invention belong within the scope of the claims in the present invention and its equivalent technologies, then the present invention is also intended to comprising including these changes and modification.
Claims (12)
1. a kind of modulation symbol transmission method, it is characterised in that including：
Equipment is sent according to the modulation system of setting, bit sequence to be sent is modulated into M modulation symbol,
The M is the integer more than 1；
The transmission equipment determines M resource unit, by the M modulation symbol one-to-one mapping described in
On M resource unit, and it is sent to receiving device.
2. the method as described in claim 1, it is characterised in that the transmission equipment is according to the modulation of setting
Mode, M modulation symbol is modulated into by bit sequence to be sent, including：
The transmission equipment puts in order according to M kinds bit position respectively, in the bit sequence to be sent
Bit position rearranged, obtain M bit sequences to be modulated；
The modulation system that equipment is sent according to the setting, respectively to the M bit sequences to be modulated
In each bit sequence to be modulated be modulated, obtain the M modulation symbol.
3. method as claimed in claim 2, it is characterised in that the transmission equipment is respectively to the M
Before each bit sequence to be modulated in bit sequence to be modulated is modulated, in addition to：
The bit sequence to be modulated for sending equipment selection setting number from the M bit sequences to be modulated
Row；
For each bit sequence to be modulated in the bit sequence to be modulated of the setting number, the transmission
Equipment carries out inversion operation to the bit of setting position in each bit sequence to be modulated.
4. method as claimed in claim 2 or claim 3, it is characterised in that the transmission equipment is respectively to described
Each bit sequence to be modulated in M bit sequences to be modulated is modulated, and obtains the M modulation symbol
Number, including：
The equipment that sends is according to each bit sequence and bit sequence and modulation symbol to be modulated
Mapping relations, obtain a modulation symbol by each bit sequence mapping to be modulated respectively；
Wherein, the bit sequence in the mapping relations of the bit sequence and modulation symbol includes described to be modulated
Bit sequence, the mapping relations of the bit sequence and modulation symbol are that a bit sequence is mapped to a tune
Symbol processed, the amount of bits that the bit sequence is included is equal to the order of modulation of the modulation system of the setting.
5. the method as described in claim 1, it is characterised in that the transmission equipment is by bit sequence to be sent
Row are modulated into M modulation symbol, including：
The mapping that equipment is sent according to the bit sequence and bit sequence and modulation symbol to be sent
Relation, M modulation symbol is obtained by the bit sequence mapping to be sent；
Wherein, the bit sequence in the mapping relations of the bit sequence and modulation symbol includes described to be sent
Bit sequence, the mapping relations of the bit sequence and modulation symbol are that a bit sequence is mapped to M tune
Symbol processed, the amount of bits that the bit sequence is included is equal to the order of modulation of the modulation system of the setting.
6. the method as described in claim 1 to 5 is any, it is characterised in that the modulation system of the setting
Including at least two modulation systems in a kind of modulation system or order of modulation identical Different Modulations.
7. one kind sends equipment, it is characterised in that including：
Processing module, for the modulation system according to setting, M modulation is modulated into by bit sequence to be sent
Symbol, the M is the integer more than 1；M resource unit is determined, by the M modulation symbol one
It is mapped to one on the M resource unit；
Sending module, for the M in the processing module one-to-one mapping to M resource unit is individual
Modulation symbol is sent to receiving device.
8. equipment is sent as claimed in claim 7, it is characterised in that the processing module is according to setting
Modulation system, when bit sequence to be sent is modulated into M modulation symbol, specifically for：
The processing module puts in order according to M kinds bit position respectively, in the bit sequence to be sent
Bit position rearranged, obtain M bit sequences to be modulated；
The processing module is according to the modulation system of the setting, respectively to the M bit sequences to be modulated
In each bit sequence to be modulated be modulated, obtain the M modulation symbol.
9. equipment is sent as claimed in claim 8, it is characterised in that the processing module is respectively to described
Before each bit sequence to be modulated in M bit sequences to be modulated is modulated, it is additionally operable to：
The bit sequence to be modulated of processing module selection setting number from the M bit sequences to be modulated
Row；
For each bit sequence to be modulated in the bit sequence to be modulated of the setting number, the processing
Module carries out inversion operation to the bit of setting position in each bit sequence to be modulated.
10. equipment is sent as claimed in claim 8 or 9, it is characterised in that the processing module difference
Each bit sequence to be modulated in the M bit sequences to be modulated is modulated, the M are obtained
During modulation symbol, including specifically for：
The processing module is according to each bit sequence and bit sequence and modulation symbol to be modulated
Mapping relations, obtain a modulation symbol by each bit sequence mapping to be modulated respectively；
Wherein, the bit sequence in the mapping relations of the bit sequence and modulation symbol includes described to be modulated
Bit sequence, the mapping relations of the bit sequence and modulation symbol are that a bit sequence is mapped to a tune
Symbol processed, the amount of bits that the bit sequence is included is equal to the order of modulation of the modulation system of the setting.
11. equipment is sent as claimed in claim 7, it is characterised in that the processing module will be to be sent
When bit sequence is modulated into M modulation symbol, specifically for：
The processing module is according to the mapping of the bit sequence and bit sequence and modulation symbol to be sent
Relation, M modulation symbol is obtained by the bit sequence mapping to be sent；
Wherein, the bit sequence in the mapping relations of the bit sequence and modulation symbol includes described to be sent
Bit sequence, the mapping relations of the bit sequence and modulation symbol are that a bit sequence is mapped to M tune
Symbol processed, the amount of bits that the bit sequence is included is equal to the order of modulation of the modulation system of the setting.
12. the transmission equipment as described in claim 7 to 11 is any, it is characterised in that the tune of the setting
Mode processed includes at least two modulation in a kind of modulation system or order of modulation identical Different Modulations
Mode.
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| CN101714962A (en) * | 2008-10-07 | 2010-05-26 | 富士通株式会社 | Hierarchical modulating method, hierarchical de-modulating method, transmitter and receiver |
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| CN102857328A (en) * | 2007-10-10 | 2013-01-02 | 三星电子株式会社 | Asynchronous hybrid ARQ process indication in a wireless communication system |
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| CN103580834A (en) * | 2012-07-31 | 2014-02-12 | 中兴通讯股份有限公司 | ePDCCH transmitting and receiving method, device, base station and user device |
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