CN106788582A - Emitter, receiver, base station, user equipment and user equipment access method - Google Patents
Emitter, receiver, base station, user equipment and user equipment access method Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
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- H04B1/707—Spread spectrum techniques using direct sequence modulation
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Abstract
Emitter, receiver, base station, user equipment and user equipment access method, methods described include：To treat that the information bit sequence of the multiple user equipmenies for sending simultaneously, respectively through channel coding and Bit Interleave, obtains the bit sequence after corresponding multiple channel codings and Bit Interleave；Bit sequence after resulting multiple channel codings and Bit Interleave is respectively adopted into corresponding spread spectrum pattern carries out bit field spread spectrum, obtains multiple spread spectrum bit sequences；Resulting multiple spread spectrum bit sequences are merged through bit field, and is mapped on corresponding subcarrier and is sent to corresponding multiple user equipmenies after planisphere modulation；Wherein, each bit in the bit sequence after the channel coding and Bit Interleave, the multiple spread spectrum bits obtained after spread spectrum, will send on different subcarriers.Such scheme, can reduce the complexity of channel coding/decoding when multi-user installation is accessed, and improve the flexibility that multi-user installation is accessed, and bring bit field spreading gain.
Description
Technical Field
The present invention relates to wireless communication technologies, and in particular, to a transmitter, a receiver, a base station, a user equipment, and a user equipment access method.
Background
In a downlink, a base station, namely a transmitting end, divides physical layer channel resources at a Bit level by using channel condition differences of different user equipment and transmission rate requirement differences to obtain physical layer subchannels at a plurality of Bit levels, and each user equipment occupies a physical layer subchannel at one Bit level, so that the spectrum efficiency of a system can be effectively improved.
In the prior art, in the process of accessing user equipment, in order to realize resource matching between the user transmission rate and the physical layer sub-channel of the occupied bit level, channel coding with a corresponding code rate needs to be designed, so that the complexity of channel coding and decoding is increased, and the problem of operation complexity exists.
Disclosure of Invention
The invention solves the technical problems of how to reduce the complexity of channel coding and decoding when multi-user equipment is accessed, improve the flexibility of multi-user equipment access and bring bit domain spread spectrum gain.
In order to solve the foregoing technical problem, an embodiment of the present invention provides a multi-user device access method, where the user device access method includes: respectively carrying out channel coding and bit interleaving processing on information bit sequences of a plurality of user equipment to be simultaneously sent to obtain a plurality of corresponding channel coded and bit interleaved bit sequences; respectively carrying out bit domain spreading on the obtained bit sequences after the plurality of channel codes and the bit interleaving by adopting corresponding spreading patterns to obtain a plurality of spreading bit sequences; and mapping the obtained plurality of spread spectrum bit sequences to corresponding subcarriers after bit domain fusion and constellation modulation, and sending the mapped spread spectrum bit sequences to a plurality of corresponding user equipment, wherein each bit in the bit sequences after channel coding and bit interleaving is sent to different subcarriers after spreading.
Optionally, the fusing the obtained multiple spread spectrum bit sequences through a bit domain, and mapping the modulated constellation map onto corresponding subcarriers and sending the mapped subcarrier to corresponding multiple user equipments includes: carrying out bit domain fusion processing on the obtained plurality of spread spectrum bit sequences to obtain corresponding bit sets; and respectively mapping a plurality of spread spectrum bits corresponding to the same bit in the bit sequence after the channel coding and the bit interleaving in the bit set to different subcarriers for transmission by adopting a distributed subcarrier mapping mode.
Optionally, the spreading pattern is obtained by using a spreading parameter corresponding to the user equipment.
Optionally, the spreading pattern is related to a channel condition of the user equipment, a target data transmission rate.
The embodiment of the invention also provides a user equipment access method, which comprises the following steps: receiving information sent by a base station on a corresponding subcarrier; sequentially carrying out resource demapping, demodulation and bit domain decomposition on the received information to obtain a corresponding spread spectrum bit sequence; using corresponding spread spectrum pattern to perform de-spread spectrum processing on the obtained spread spectrum bit sequence to obtain corresponding channel code and bit sequence after bit interleaving; and respectively carrying out bit de-interleaving and channel decoding processing on the obtained bit sequences after the channel coding and the bit interleaving to obtain corresponding information bit sequences.
Optionally, the spreading pattern is obtained by a spreading parameter sent by a base station.
Optionally, the spreading pattern is related to a channel condition of the user equipment, a target data transmission rate.
An embodiment of the present invention further provides a transmitter, including: the coding interleaving unit is suitable for respectively carrying out channel coding and bit interleaving processing on information bit sequences of a plurality of user equipment to be simultaneously sent to obtain a plurality of corresponding channel coded and bit interleaved bit sequences; a spreading unit, adapted to perform bit domain spreading on the obtained multiple channel codes and bit interleaved bit sequences respectively by using corresponding spreading patterns to obtain multiple spread spectrum bit sequences; and the resource mapping unit is suitable for mapping the obtained multiple spread spectrum bit sequences to corresponding subcarriers after bit domain fusion and constellation modulation and sending the mapped spread spectrum bit sequences to the corresponding multiple user equipment, wherein each bit in the bit sequences after channel coding and bit interleaving is sent to different subcarriers through multiple spread spectrum bits obtained by the bit domain spread spectrum.
Optionally, the resource mapping unit is adapted to perform bit domain fusion processing on the obtained multiple spread spectrum bit sequences to obtain corresponding bit sets; and respectively mapping a plurality of spread spectrum bits corresponding to the same bit in the bit sequence after the channel coding and the bit interleaving in the bit set to different subcarriers for transmission by adopting a distributed subcarrier mapping mode.
Optionally, the spreading pattern is obtained by using spreading parameters corresponding to each user equipment.
Optionally, the spreading pattern is related to a channel condition of the user equipment, a target data transmission rate.
The embodiment of the invention also provides a base station, which comprises the transmitter.
An embodiment of the present invention further provides a receiver, including: a receiving unit, adapted to receive information transmitted by a base station on corresponding subcarriers; the de-processing unit is suitable for sequentially carrying out resource de-mapping, demodulation and bit domain decomposition on the received information to obtain a corresponding spread spectrum bit sequence; and the de-spreading unit is suitable for performing de-spreading processing on the obtained spread spectrum bit sequence by adopting the corresponding spreading pattern to obtain a corresponding channel code and bit-interleaved bit sequence interleaving and decoding unit, and is suitable for performing bit de-interleaving and channel decoding processing on the obtained channel code and bit-interleaved bit sequence to obtain a corresponding information bit sequence.
Optionally, the spreading pattern is obtained by a spreading parameter sent by a base station.
Optionally, the spreading pattern is related to a channel condition of the user equipment, a target data transmission rate.
The embodiment of the invention also provides user equipment which comprises the receiver.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:
according to the scheme, different spreading patterns are configured for different user equipment, and information bits of a plurality of user equipment to be sent simultaneously are subjected to spreading processing in a bit domain by adopting the corresponding spreading patterns respectively to obtain a plurality of corresponding spreading sequences, so that flexible code rate design can be realized, the channel coding complexity during access of the multi-user equipment can be reduced, the operation is simple and easy to implement, and meanwhile, remarkable spreading gain is brought.
Furthermore, the spread spectrum pattern of each user equipment is configured by the base station according to the channel condition and the target transmission rate of the user equipment, so that the service requirements of different user equipment can be met, and the flexibility of multi-user equipment access is improved.
Drawings
Fig. 1 is a flowchart illustrating a user equipment access method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of bit-domain spreading and resource mapping according to an embodiment of the present invention;
fig. 3 is a flowchart of another ue access method according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a transmitter in an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a receiver in an embodiment of the present invention.
Detailed Description
As described in the background art, in order to achieve matching between a target transmission rate and occupied bits, in the prior art, a channel code for a corresponding code rate needs to be designed, which increases the complexity of the channel code.
In order to solve the above problem, in the embodiments of the present invention, the base station configures different spreading patterns for different user equipments, and performs spreading processing on information bits of multiple user equipments to be simultaneously transmitted in a bit domain by using corresponding spreading patterns to obtain corresponding multiple spreading sequences, so that complexity of channel coding when the multiple user equipments access can be reduced, and significant spreading gain is brought, and the operation is simple and easy.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Fig. 1 is a schematic diagram illustrating a user equipment access method in an embodiment of the present invention. Referring to fig. 1, in a specific implementation, a user equipment access method in an embodiment of the present invention may include the following steps:
step S101: and respectively carrying out channel coding and bit interleaving processing on the information bit sequences of a plurality of user equipment to be simultaneously sent to obtain a plurality of corresponding channel coded and bit interleaved bit sequences.
In a specific implementation, when a base station simultaneously transmits downlink data to a plurality of accessed user equipments, for example, K (K is an integer greater than or equal to 2) user equipments, information bits to be transmitted to the K user equipments may first be sequentially subjected to channel coding and bit interleaving processing to obtain bit sequences after channel coding and bit interleaving one-to-one corresponding to the K user equipments, that is, bit sequences after the K channel coding and bit interleaving.
Step S102: and respectively carrying out bit domain spreading on the obtained bit sequences after the plurality of channel codes and the bit interleaving by adopting corresponding spreading patterns to obtain a plurality of spreading bit sequences.
In a specific implementation, when obtaining the channel codes and the bit sequences after bit interleaving corresponding to the K user equipments one to one, the base station may first obtain the spreading patterns corresponding to the K user equipments one to one, and perform corresponding bit domain spreading operations on the channel codes and the bit sequences after bit interleaving of the K user equipments according to the obtained corresponding spreading patterns, to obtain a plurality of spreading bit sequences corresponding to the K user equipments. In other words, one bit in the channel-coded and bit-interleaved bit sequence corresponds to a plurality of spread bits in its corresponding spread bit sequence.
In an embodiment of the present invention, the spreading patterns corresponding to the K pieces of user equipment one to one may be set by the base station according to actual needs. For example, the base station may pre-configure a corresponding spreading pattern according to a service transmission requirement of each user equipment, such as a channel condition, a target data transmission rate, and the like, and carry information of the corresponding spreading pattern through a corresponding spreading parameter.
For example, if the target transmission rate of the user equipment K is 2bps, and if the occupied equivalent sub-channel resource is 12bps and the code rate 1/2 of the existing channel coding is to implement channel coding of code rate 1/6, in order to implement channel coding of code rate 1/6, the user equipment access method in the embodiment of the present invention may implement channel coding with a code rate of 1/6 by setting a spreading pattern with a spreading length of 3 for the downlink data of the user equipment K, and performing channel coding and bit-interleaved bit sequence spreading operation on the downlink data of the user equipment K.
Step S103: and fusing the obtained spread spectrum bit sequences through a bit domain, modulating a constellation map, mapping the modulated spread spectrum bit sequences to corresponding subcarriers, and sending the modulated spread spectrum bit sequences to a plurality of corresponding user equipment.
In a specific implementation, when the spread spectrum bit sequences corresponding to the K user equipments one to one are obtained, the base station may perform bit domain fusion on the obtained multiple spread spectrum bit sequences corresponding to the K user equipments one to obtain a corresponding bit set, modulate and map the obtained bit set to high-order constellation symbols, and send the modulated and mapped bit set to the K user equipments through corresponding subcarriers after resource mapping.
Specifically, for the information bit sequence of each of the K user equipments, the K spreading bit sequences are obtained through the corresponding spreading pattern processing. After a bit in the bit sequence after channel coding and bit interleaving of each user equipment is processed by a corresponding spreading pattern, a plurality of corresponding spreading bits in the corresponding spreading sequence are obtained, and a plurality of spreading bits obtained after spreading of each bit in the bit sequence after channel coding and bit interleaving are arranged according to a corresponding sequence, so that the corresponding spreading bit sequence can be obtained.
After the spread spectrum bit sequences corresponding to the K user equipments one to one are obtained, the K spread spectrum bit sequences may be subjected to bit domain fusion according to a preset rule to obtain a corresponding bit set, and each bit in the obtained bit set is respectively mapped to a corresponding subcarrier and sent to the corresponding user equipments. In an embodiment of the present invention, a distributed (distributed) subcarrier mapping manner may be adopted to map each bit in the bit set to a corresponding subcarrier, that is, a plurality of spread spectrum bits corresponding to one bit in a bit sequence after channel coding and bit interleaving of each user equipment are mapped to different subcarriers, respectively. In this way, a plurality of spread bits obtained by spreading one bit in the information bit sequence in the bit domain will experience different channel fading, so that a significant spreading gain can be obtained.
Referring to fig. 2, each bit in K user equipments, i.e. user equipment 1 to user equipment K, i.e. 10101 …, is spread with a corresponding spreading pattern, so as to obtain a plurality of corresponding spread bits, and the obtained plurality of spread bits are transmitted on different subcarriers, thereby implementing bit-domain spreading gain.
In addition, an Orthogonal Frequency Division Multiplexing (OFDM) symbol carried on each subcarrier will contain spread spreading bits for a plurality of user equipments. For example, when the predetermined modulation order is M, one OFDM symbol may include log2M bits of information, i.e. 0, 1, 2 … … log2M will be spreading bit sequences from a plurality of user equipments respectively.
By the above mode, the physical layer channel resources can realize bit level division among the multi-user equipment, and data of the user equipment can be distributed to the physical layer sub-channels of the corresponding bit level according to the channel condition, the target transmission rate requirement and the like of each user equipment, that is, the number of bit positions occupied by the user equipment in all the OFDM symbol resources, so that flexible code rate design can be realized, the channel coding and decoding complexity can be reduced, and the receiver design can be simplified.
In a specific implementation, when the base station sends information of a plurality of user equipments to the user equipments through the subcarriers, the user equipments may receive the information by using a corresponding method, and please refer to fig. 3 for specific steps.
Fig. 3 is a schematic diagram illustrating a user equipment access method in an embodiment of the present invention. Referring to fig. 3 and 3, in a specific implementation, the user equipment access method in the embodiment of the present invention may include the following steps:
step S301: and receiving the information transmitted by the base station on the corresponding subcarrier.
In a specific implementation, the ue may receive corresponding information sent by the base station through a corresponding subcarrier.
Step S302: and sequentially carrying out resource demapping, demodulation and bit domain decomposition on the received information to obtain a corresponding spread spectrum bit sequence.
In specific implementation, the corresponding information (or called data) received by the ue is data obtained by sequentially performing channel coding, bit interleaving, spreading, bit domain fusion, constellation modulation, and resource mapping on a corresponding information bit sequence. In order to obtain the corresponding information bit sequence, the ue may sequentially perform resource demapping, demodulation, and bit domain decomposition on the received data to obtain the corresponding spread spectrum bit sequence. The resource demapping, demodulation and bit domain decomposition processing are respectively reverse processing operations corresponding to the resource mapping, the constellation map modulation and the bit domain fusion.
Step S303: and performing despreading processing on the obtained bit sequence by adopting a corresponding spreading pattern to obtain a corresponding channel code and a bit sequence after bit interleaving.
In a specific implementation, when obtaining the corresponding spreading bit sequence, the ue may perform despreading processing on the obtained spreading bit sequence by using the corresponding spreading pattern to obtain a channel coded and bit-interleaved bit sequence.
The corresponding spreading pattern used by the user equipment in despreading may be indicated by the base station through the corresponding spreading parameter, so that the user equipment may obtain the spreading pattern corresponding to the currently received information based on the spreading parameter.
In a specific implementation, the sending timing of the spreading parameter may be set according to actual needs. For example, the base station may send the corresponding spreading parameters to the user equipment together when sending the corresponding information to the user equipment, or may send the corresponding spreading parameters to the user equipment before sending the corresponding information, for example, in a previous subframe.
Step S304: and respectively carrying out bit de-interleaving and channel decoding on the channel coding obtained after de-spreading and the bit sequence obtained after bit interleaving to obtain a corresponding information bit sequence.
In specific implementation, when the corresponding despread bit sequence is obtained, the user equipment sequentially performs bit deinterleaving and decoding operations on the obtained channel code obtained after despreading and the bit sequence obtained after bit interleaving to obtain a corresponding information bit sequence, thereby completing the reception of corresponding downlink data. Wherein the bit deinterleaving and decoding processes are reverse processing operations corresponding to bit interleaving and channel coding, respectively.
The foregoing describes in detail an access method of a user equipment in an embodiment of the present invention, and a device corresponding to the foregoing method is described below.
Fig. 4 shows a structure of a transmitter in the embodiment of the present invention. Referring to fig. 4, in a specific implementation, a transmitter 400 in an embodiment of the present invention may include a code interleaving unit 401, a spreading unit 402, and a resource mapping unit 403, where:
the code interleaving unit 401 is adapted to perform channel coding and bit interleaving processing on information bit sequences of multiple user equipments to be simultaneously transmitted, respectively, to obtain corresponding bit sequences after multiple channel coding and bit interleaving.
The spreading unit 402 is adapted to perform bit-domain spreading on the obtained multiple channel codes and bit-interleaved bit sequences by using corresponding spreading patterns, respectively, to obtain multiple spread bit sequences.
The resource mapping unit 403 is adapted to map the obtained multiple spread spectrum bit sequences onto corresponding subcarriers after bit domain fusion and constellation modulation, and send the mapped multiple spread spectrum bit sequences to corresponding multiple user equipments; wherein, each bit in the bit sequence after the channel coding and the bit interleaving is spread to obtain a plurality of spread spectrum bits, and the spread spectrum bits are sent on different subcarriers.
In an embodiment of the present invention, the resource mapping unit 403 is adapted to perform bit domain fusion processing on the obtained multiple spread spectrum bit sequences to obtain corresponding bit sets; and respectively mapping a plurality of spread spectrum bits corresponding to the same bit in the bit sequence after the channel coding and the bit interleaving in the bit set to different subcarriers for transmission by adopting a distributed subcarrier mapping mode.
In a specific implementation, the spreading pattern may be obtained by using spreading parameters corresponding to each ue.
In a specific implementation, the base station may set a corresponding spreading pattern according to a service requirement of the user equipment, for example, according to a channel condition of the user equipment, a target data transmission rate, and the like.
An embodiment of the present invention further provides a base station, where the base station includes the transmitter 400, and a detailed structure of the transmitter 400 is described in the foregoing embodiment, which is not described herein again.
Fig. 5 shows a structure of a receiver in an embodiment of the present invention. Referring to fig. 5, in a specific implementation, a receiver 500 in the embodiment of the present invention may include a receiving unit 501, a de-processing unit 502, a despreading unit 503, and a de-interleaving decoding unit 504, where:
the receiving unit 501 is adapted to receive information sent by a base station on a corresponding subcarrier.
The de-processing unit 502 is adapted to sequentially perform resource de-mapping, demodulation, and bit-domain decomposition on the received information to obtain a corresponding spread spectrum bit sequence.
A despreading unit 503, adapted to perform despreading processing on the obtained spread bit sequence by using the corresponding spreading pattern to obtain a corresponding channel code and a bit sequence after bit interleaving.
The deinterleaving decoding unit 504 is adapted to perform bit deinterleaving and channel decoding on the obtained channel coded and bit interleaved bit sequences, respectively, to obtain corresponding information bit sequences.
In a specific implementation, the spreading pattern is obtained by a spreading parameter sent by a base station.
In a specific implementation, the spreading pattern is related to a channel condition of the user equipment, a target data transmission rate.
An embodiment of the present invention further provides a user equipment, where the user equipment includes any receiver 500 in the foregoing embodiments, and please refer to the foregoing embodiments for a specific structure of the receiver 500, which is not described herein again.
By adopting the scheme, according to the channel condition and the target data transmission rate, corresponding spreading patterns are configured for different user equipment, and information bits of a plurality of user equipment to be simultaneously transmitted are respectively subjected to spreading processing in a bit domain by adopting the corresponding spreading patterns to obtain a plurality of corresponding spreading sequences without designing channel codes with corresponding code rates, so that the complexity of channel coding when the multi-user equipment is accessed can be reduced, obvious spreading gains are brought, and the operation is simple and easy.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable storage medium, and the storage medium may include: ROM, RAM, magnetic or optical disks, and the like.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (16)
1. A method for accessing user equipment, comprising:
respectively carrying out channel coding and bit interleaving processing on information bit sequences of a plurality of user equipment to be simultaneously sent to obtain a plurality of corresponding channel coded and bit interleaved bit sequences;
respectively carrying out bit domain spreading on the obtained bit sequences after the plurality of channel codes and the bit interleaving by adopting corresponding spreading patterns to obtain a plurality of spreading bit sequences;
fusing the obtained spread spectrum bit sequences through a bit field, modulating a constellation map, mapping the modulated spread spectrum bit sequences to corresponding subcarriers and sending the modulated spread spectrum bit sequences to a plurality of corresponding user equipment; wherein, each bit in the bit sequence after the channel coding and the bit interleaving is transmitted on different subcarriers through a plurality of spread spectrum bits obtained by the bit domain spread spectrum.
2. The ue access method according to claim 1, wherein the bit-domain fusing the obtained multiple spread spectrum bit sequences, and mapping the modulated constellation map onto corresponding subcarriers and sending the mapped subcarrier to the corresponding multiple ues comprise:
carrying out bit domain fusion processing on the obtained plurality of spread spectrum bit sequences to obtain corresponding bit sets;
and respectively mapping a plurality of spread spectrum bits corresponding to the same bit in the bit sequence after the channel coding and the bit interleaving in the bit set to different subcarriers for transmission by adopting a distributed subcarrier mapping mode.
3. The UE accessing method of claim 1, wherein the spreading pattern is obtained by using spreading parameters corresponding to the UE.
4. The UE accessing method of claim 1, wherein the spreading pattern is related to a channel condition of the UE and a target data transmission rate.
5. A method for accessing user equipment, comprising:
receiving information sent by a base station on a corresponding subcarrier;
sequentially carrying out resource demapping, demodulation and bit domain decomposition on the received information to obtain a corresponding spread spectrum bit sequence;
using corresponding spread spectrum pattern to perform de-spread spectrum processing on the obtained spread spectrum bit sequence to obtain corresponding channel code and bit sequence after bit interleaving;
and respectively carrying out bit de-interleaving and channel decoding processing on the obtained bit sequences after the channel coding and the bit interleaving to obtain corresponding information bit sequences.
6. The UE access method of claim 5, wherein the spreading pattern is derived from spreading parameters sent by a base station.
7. The UE accessing method of claim 5, wherein the spreading pattern is related to a channel condition of the UE and a target data transmission rate.
8. A transmitter, comprising:
the coding interleaving unit is suitable for respectively carrying out channel coding and bit interleaving processing on information bit sequences of a plurality of user equipment to be simultaneously sent to obtain a plurality of corresponding channel coded and bit interleaved bit sequences;
a spreading unit, adapted to perform bit domain spreading on the obtained multiple channel codes and bit interleaved bit sequences respectively by using corresponding spreading patterns to obtain multiple spread spectrum bit sequences;
the resource mapping unit is suitable for fusing the obtained multiple spread spectrum bit sequences through bit domains, mapping the obtained multiple spread spectrum bit sequences to corresponding subcarriers after modulation of a constellation map, and sending the mapped multiple spread spectrum bit sequences to the corresponding multiple user equipment; wherein,
each bit in the bit sequence after the channel coding and the bit interleaving is transmitted on different subcarriers through a plurality of spread spectrum bits obtained by the bit domain spread spectrum.
9. The transmitter according to claim 8, wherein the resource mapping unit is adapted to perform a bit-domain fusion process on the obtained plurality of spread spectrum bit sequences to obtain corresponding bit sets; and respectively mapping a plurality of spread spectrum bits corresponding to the same bit in the bit sequence after the channel coding and the bit interleaving in the bit set to different subcarriers for transmission by adopting a distributed subcarrier mapping mode.
10. The transmitter of claim 8, wherein the spreading pattern is obtained by spreading parameters corresponding to each UE.
11. The transmitter of claim 8, wherein the spreading pattern is related to a channel condition of a user equipment, a target data transmission rate.
12. A base station, characterized in that it comprises a transmitter according to any of claims 8-11.
13. A receiver, comprising:
a receiving unit, adapted to receive information transmitted by a base station on corresponding subcarriers;
the de-processing unit is suitable for sequentially carrying out resource de-mapping, demodulation and bit domain decomposition on the received information to obtain a corresponding spread spectrum bit sequence;
a despreading unit adapted to perform despreading processing on the obtained spread spectrum bit sequence by using the corresponding spreading pattern to obtain a corresponding channel code and a bit sequence after bit interleaving;
and the de-interleaving decoding unit is suitable for respectively performing bit de-interleaving and channel decoding processing on the obtained channel coding and bit interleaved bit sequence to obtain a corresponding information bit sequence.
14. The receiver of claim 13, wherein the spreading pattern is derived from spreading parameters transmitted by a base station.
15. The receiver of claim 13, wherein the spreading pattern is related to a channel condition of a user equipment, a target data transmission rate.
16. A user equipment, characterized in that it comprises a receiver according to any one of claims 13-15.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109474552A (en) * | 2017-09-08 | 2019-03-15 | 北京科技大学 | Soft symbol estimation method, receiver and computer-readable medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101043484A (en) * | 2006-03-20 | 2007-09-26 | 松下电器产业株式会社 | Non-equal multi-user high order modulation approach |
| CN101163126A (en) * | 2006-10-11 | 2008-04-16 | 中兴通讯股份有限公司 | Method of implementing QPSK modulation using 16QAM modulation |
| CN101277144A (en) * | 2007-03-28 | 2008-10-01 | 北京三星通信技术研究有限公司 | Satellite digital multimedia broadcasting system based on LDPC code |
| CN101437007A (en) * | 2007-11-12 | 2009-05-20 | 华为技术有限公司 | Method, apparatus and equipment for sending and receiving data of MIMO system |
-
2016
- 2016-07-07 CN CN201610533498.7A patent/CN106788582B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101043484A (en) * | 2006-03-20 | 2007-09-26 | 松下电器产业株式会社 | Non-equal multi-user high order modulation approach |
| CN101163126A (en) * | 2006-10-11 | 2008-04-16 | 中兴通讯股份有限公司 | Method of implementing QPSK modulation using 16QAM modulation |
| CN101277144A (en) * | 2007-03-28 | 2008-10-01 | 北京三星通信技术研究有限公司 | Satellite digital multimedia broadcasting system based on LDPC code |
| CN101437007A (en) * | 2007-11-12 | 2009-05-20 | 华为技术有限公司 | Method, apparatus and equipment for sending and receiving data of MIMO system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109474552A (en) * | 2017-09-08 | 2019-03-15 | 北京科技大学 | Soft symbol estimation method, receiver and computer-readable medium |
| CN109474552B (en) * | 2017-09-08 | 2020-05-15 | 北京科技大学 | Soft symbol estimation method, receiver and computer readable medium |
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