WO2018196509A1 - 重叠复用系统的处理方法、装置及系统 - Google Patents

重叠复用系统的处理方法、装置及系统 Download PDF

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WO2018196509A1
WO2018196509A1 PCT/CN2018/079724 CN2018079724W WO2018196509A1 WO 2018196509 A1 WO2018196509 A1 WO 2018196509A1 CN 2018079724 W CN2018079724 W CN 2018079724W WO 2018196509 A1 WO2018196509 A1 WO 2018196509A1
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decoding
decoding result
information
algorithm
error correction
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PCT/CN2018/079724
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English (en)
French (fr)
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刘若鹏
季春霖
刘子红
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深圳超级数据链技术有限公司
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Priority to EP18792081.4A priority Critical patent/EP3605898A4/en
Priority to JP2019558413A priority patent/JP7085568B2/ja
Publication of WO2018196509A1 publication Critical patent/WO2018196509A1/zh
Priority to US16/659,515 priority patent/US11082147B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J99/00—Subject matter not provided for in other groups of this subclass
    • 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
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H04L1/0047—Decoding adapted to other signal detection operation
    • H04L1/005—Iterative decoding, including iteration between signal detection and decoding operation
    • 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
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H04L1/0047—Decoding adapted to other signal detection operation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/25—Error detection or forward error correction by signal space coding, i.e. adding redundancy in the signal constellation, e.g. Trellis Coded Modulation [TCM]
    • H03M13/258—Error detection or forward error correction by signal space coding, i.e. adding redundancy in the signal constellation, e.g. Trellis Coded Modulation [TCM] with turbo codes, e.g. Turbo Trellis Coded Modulation [TTCM]
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/27—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes using interleaving techniques
    • H03M13/2742—Irregular interleaver wherein the permutation pattern is not obtained by a computation rule, e.g. interleaver based on random generators
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/29—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes combining two or more codes or code structures, e.g. product codes, generalised product codes, concatenated codes, inner and outer codes
    • H03M13/2906—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes combining two or more codes or code structures, e.g. product codes, generalised product codes, concatenated codes, inner and outer codes using block codes
    • H03M13/2909—Product codes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/29—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes combining two or more codes or code structures, e.g. product codes, generalised product codes, concatenated codes, inner and outer codes
    • H03M13/2957—Turbo codes and decoding
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/37—Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03 - H03M13/35
    • H03M13/3746—Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03 - H03M13/35 with iterative decoding
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/37—Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03 - H03M13/35
    • H03M13/45—Soft decoding, i.e. using symbol reliability information
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/63—Joint error correction and other techniques
    • H03M13/6325—Error control coding in combination with demodulation
    • 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
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H04L1/0052—Realisations of complexity reduction techniques, e.g. pipelining or use of look-up tables
    • 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
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H04L1/0054—Maximum-likelihood or sequential decoding, e.g. Viterbi, Fano, ZJ algorithms
    • 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
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0059—Convolutional codes
    • 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
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0061—Error detection codes
    • 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
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0064—Concatenated codes
    • 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
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0071—Use of interleaving

Definitions

  • the present invention relates to the field of overlapping multiplexing systems, and in particular to a processing method, apparatus and system for an overlapping multiplexing system.
  • OvXDM overlap-multiplexed OvXDM
  • X represents any domain, for example, time domain T, that is, OvTDM (Overlapped Time Division Multiplexing);
  • OvSDM Overlapped Space Division Multiplexing
  • frequency domain F OvFDM (Overlapped Frequency Division Multiplexing
  • code division domain C OvCDM (Overlapped Code Division Multiplexing) Code division multiplexing) or hybrid domain H
  • OvHDM Overlapped Hybrid Division Multiplexing
  • the threshold signal-to-noise ratio also increases, and in the case of low spectral efficiency, the coding gain is low.
  • the system structure is relatively simple and the error correction capability is limited, as the number of overlaps K increases, the bit error rate also increases, which degrades the reliability of the system.
  • the embodiments of the present invention provide a method, an apparatus, and a system for processing an overlapping multiplexing system, so as to at least solve the technical problem that the error correction capability of the overlapping multiplexing system in the prior art is poor, resulting in low reliability of the overlapping multiplexing system.
  • a processing method of an overlap multiplexing system including: receiving coded information output by a transmitting end, wherein the encoding information is an error correcting code encoding and an overlapping multiplexing encoding of the input information. Obtaining information; decoding the encoded information according to the overlapping multiplexing decoding algorithm to obtain a first decoding result; and performing error correction processing on the first decoding result according to the error correction code decoding algorithm to obtain a second decoding Result; outputting the second decoding result.
  • a processing apparatus of an overlap multiplexing system including: a receiving module, configured to receive coded information output by a transmitting end, where the encoded information is an error correcting code for inputting information Encoding and overlapping multiplexing the obtained information; the first decoding module is configured to decode the encoded information according to the overlapping multiplexing decoding algorithm to obtain a first decoding result; and the second decoding module is configured to The error correction code decoding algorithm performs error correction processing on the first decoding result to obtain a second decoding result, and an output module is configured to output the second decoding result.
  • a processing system of an overlap multiplexing system including: a transmitting end, configured to output encoded information, where the encoded information is an error correcting code encoding and overlapping complexing of the input information.
  • the information obtained by the coding the receiving end has a communication relationship with the transmitting end, and is used for decoding the encoded information according to the overlapping multiplexing decoding algorithm to obtain a first decoding result, according to the error correcting code decoding algorithm,
  • the first decoding result performs error correction processing to obtain a second decoding result, and outputs a second decoding result.
  • a storage medium including a stored program, wherein a device in which the storage medium is located is controlled to execute a processing method of the overlapping multiplexing system in the above embodiment while the program is running.
  • a processor comprising: a processor, configured to execute a program, wherein the program is executed to execute a processing method of the overlap multiplexing system in the above embodiment.
  • a terminal including: receiving means, configured to receive coded information output by a transmitting end, where the coded information is error coded coded and overlapped and multiplexed coded for input information The obtained information; a storage medium for storing a program, wherein the program performs, at runtime, the following processing steps for the data output from the receiving device: decoding the encoded information according to the overlapping multiplexing decoding algorithm to obtain the first translation
  • the code result is subjected to error correction processing on the first decoding result according to the error correction code decoding algorithm to obtain a second decoding result, and outputs a second decoding result.
  • a terminal including: receiving means, configured to receive coded information output by a transmitting end, where the coded information is error coded coded and overlapped and multiplexed coded for input information The obtained information; the processor, the processor running the program, wherein the program is executed to perform the following processing steps on the data output from the receiving device: decoding the encoded information according to the overlapping multiplexing decoding algorithm to obtain the first decoding As a result, according to the error correction code decoding algorithm, the first decoding result is subjected to error correction processing to obtain a second decoding result, and the second decoding result is output.
  • the coding information output by the transmitting end is received, and the coding information is decoded according to the overlap multiplexing decoding algorithm to obtain a first decoding result, and the first decoding is performed according to the error correction code decoding algorithm.
  • error correction processing is performed to obtain a second decoding result, and the second decoding result is output.
  • the signal-to-noise ratio can achieve a lower bit error rate, and two channels of transmission data can be introduced to further improve the reliability of the overlapping multiplexing system, thereby solving the poor error correction capability of the prior art overlapping multiplexing system, resulting in poor error correction capability.
  • FIG. 1 is a flow chart of a processing method of an overlay multiplexing system according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of an optional OvTDM system transmitting signal according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of an optional OvTDM waveform convolutional coding model in accordance with an embodiment of the present invention
  • FIG. 4 is a schematic diagram of an optional OvTDM system receiving signal according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of an optional K-way waveform multiplexing according to an embodiment of the present invention.
  • FIG. 6 is a diagram showing an input/output relationship of an optional OvTDM system according to an embodiment of the present invention.
  • FIG. 7 is a node state transition diagram of an optional OvTDM system in accordance with an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of an optional OvTDM system transmitting end according to an embodiment of the present invention.
  • FIG. 11 is a schematic diagram of another optional OvTDM system transmitting end according to an embodiment of the present invention.
  • FIG. 12 is a schematic diagram of still another optional transmitting end of an OvTDM system according to an embodiment of the present invention.
  • FIG. 13 is a schematic diagram of an optional OvTDM system receiving end according to an embodiment of the present invention.
  • FIG. 14 is a schematic diagram of another optional OvTDM system receiving end according to an embodiment of the present invention.
  • FIG. 15 is a schematic diagram of still another optional receiving end of an OvTDM system according to an embodiment of the present invention.
  • FIG. 16 is a schematic diagram of still another optional OvTDM system transmitting end according to an embodiment of the present invention.
  • FIG. 17 is a schematic diagram of still another optional OvTDM system receiving end according to an embodiment of the present invention.
  • FIG. 18 is a schematic diagram of still another optional OvTDM system receiving end according to an embodiment of the present invention.
  • FIG. 19 is a schematic diagram of a processing apparatus of an overlay multiplexing system according to an embodiment of the present invention.
  • FIG. 20 is a schematic diagram of a processing system of an overlay multiplexing system in accordance with an embodiment of the present invention.
  • an embodiment of a processing method of an overlay multiplexing system is provided, it being noted that the steps illustrated in the flowchart of the figures may be performed in a computer system such as a set of computer executable instructions And, although the logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in a different order than the ones described herein.
  • FIG. 1 is a flowchart of a processing method of an overlay multiplexing system according to an embodiment of the present invention. As shown in FIG. 1, the method includes the following steps:
  • Step S102 Receive coding information output by the transmitting end, where the coding information is information obtained by performing error correction code coding and overlap multiplexing coding on the input information.
  • the above-mentioned overlapping multiplex coding may be OvXDM coding.
  • the OvTDM system is taken as an example for detailed description, and those skilled in the art may provide the present embodiment based on the selection and conversion of the communication domain.
  • the solution is applied in other overlapping multiplexing systems.
  • the OvFDM system the Fourier transform is performed on the received signal, and the related processing is performed, which can be converted into a processing step similar to OvTDM.
  • the OvTDM system transmit signal block diagram is shown in Figure 2.
  • the OvTDM waveform convolutional coding model is shown in Figure 3.
  • the specific steps are as follows: (1) First, design the envelope waveform h(t) to generate the transmitted signal; (2) Will (1) The envelope waveform h(t) designed in the case is shifted by a specific time to form a signal envelope waveform h (ti ⁇ ⁇ T) at other times; (3) generating the symbols x i and (2) to be transmitted.
  • the transmitted signal can be expressed as: Where the symbol is sent Corresponds to the input data sequence P i in 1 .
  • the OvTDM receiving signal block diagram is shown in Figure 4. After preprocessing the received signal, such as synchronization, channel estimation and digitization, the signal is sequenced.
  • the analyzing unit memory performs a complex convolutional coding model and a trellis diagram of the overlapping time division multiplexing system, and lists all states of the overlapping time division multiplexing system, and stores the same; Analyze the trellis in the unit memory to find the path with the minimum Euclidean distance or the weighted minimum Euclidean distance of the received digital signal; and the reserved path memory and Euclidean distance memory or weighted Euclidean distance memory are used to store the comparator respectively The reserved path and Euclidean distance or weighted Euclidean distance of the output.
  • the reserved path memory and the Euclidean distance memory or the weighted Euclidean distance memory need to be prepared for each stable state.
  • the reserved path memory length may preferably be 4K to 5K.
  • the Euclidean distance memory or the weighted Euclidean distance memory preferably stores only relative distances.
  • each row represents a waveform to be transmitted x i h(ti * ⁇ T) obtained by multiplying a symbol x i to be transmitted with an envelope waveform h(ti * ⁇ T) at a corresponding time.
  • a 0 to a k-1 represent coefficient values of each part obtained by K-segmentation of each window function waveform (envelope waveform), specifically, coefficients regarding amplitude values.
  • the input/output relationship diagram of the OvTDM system is shown in Figure 6. At one node, the upward direction is +1 and the downward direction is -1. For each node, the node transfer path is finally obtained, and the input can be obtained according to the transfer relationship. Sequence of symbols.
  • the specific node state transition diagram is as shown in FIG. 7, that is, for a node, the state transition mode is only in any one of FIG. 7, as long as the possibility of various transitions is determined, thereby determining the manner of the transfer.
  • FIG. 8 is a general diagram of the state transition of each node of the entire output process, which is not described herein.
  • the transmitting end transmits the coded modulated signal through the antenna, and the signal is transmitted in the wireless channel.
  • the receiving end first preprocesses the received signal, then performs matching filtering on the received signal, and then separately samples and decodes the signal, and finally determines the final signal. Output bit stream.
  • the specific steps are as follows: (1) First, the received signal is synchronized, including carrier synchronization, frame synchronization, symbol time synchronization, etc.; (2) digitally processing the received signal in each frame according to the sampling theorem; (3) receiving The waveform to be cut is cut according to the waveform transmission time interval, that is, the signal is sampled; (4) the cut waveform is decoded according to a certain decoding algorithm.
  • the above error correction code encoding may be precoding using an error correcting code, for example, FEC encoding.
  • the function of precoding is to perform preliminary coding on the input bit stream. Precoding can improve the error correction capability of the information stream, reduce the system error rate, provide a higher code rate, and enhance the reliability of the information bit stream.
  • the precoding method There are a plurality of types, including a convolutional code, a Turbo code, a Turbo Product Code (TPC code), and the like.
  • the TPC code is taken as an example to describe the precoding process.
  • the TPC code belongs to a class of Turbo codes.
  • the TPC code is actually an array Turbo code, which includes two component encoders of row and column to form a two-dimensional TPC code.
  • the component code may be a convolutional code or a simple block code such as a Hamming code, a BCH code, or even a parity code.
  • the coding array of the TPC can be further extended to three-dimensional or more. For example, diagonal coding is added on the basis of the two-dimensional row and column coding, and the matrix is further expanded by one row or one column of parity information, as shown in FIG.
  • the TPC encoding process is mainly divided into three steps: (1) first placing information bits in a K C * K R matrix; (2) encoding K C bits per line into codewords of length N C ; (3) Encoding each column of K R bits into a codeword of NR ; (4) outputting the encoded N C * N R codeword matrix in columns to complete the encoding process, and the code rate of the TPC encoding is TPC coding is very flexible. Since the minimum Hamming distance of the TPC code is equal to the product of the component code and the minimum Hamming distance, the TPC code can achieve excellent performance with a simple Hamming code.
  • the component code can be constructed with a TPC (64, 57) code whose performance can be compared with the Turbo code by using an extension (64, 57) Hamming code that can correct only one error.
  • This type of coding not only has excellent error correction performance, but also Has a higher code rate.
  • the first coding information may be I-channel coding information
  • the second coding information may be Q-channel coding information
  • the transmitting end may add a precoding process before OvTDM encoding, and may perform precoding using an error correcting code.
  • the transmitting end may add a precoding process before OvTDM encoding, for example, adding an FEC encoding process, passing the input information stream through an interleaver, and performing FEC encoding and OvTDM encoding. Form I and Q two-way data transmission.
  • the transmitting end may add a precoding process before the OvTDM system, for example, adding an FEC encoding process, precoding the input information, and precoding the information stream.
  • one of the information flows through the interleaver, respectively, after OvTDM encoding, forming two data transmissions of I and Q.
  • the transmitting end After the transmitting end performs the multiplex multiplexing coding on the input information and the encoding information obtained by the error correcting code encoding, the transmitting information may be transmitted to the receiving end through the channel.
  • Step S104 decoding the encoded information according to the overlap multiplexing decoding algorithm to obtain a first decoding result.
  • the above-mentioned overlapping multiplex decoding algorithm may be an OvXDM decoding algorithm.
  • the OvTDM system is taken as an example for detailed description. Since the OvTDM system and the error correcting code are combined and decoded, the OvTDM translation is required. The output of the code is a soft value.
  • Commonly used decoding algorithms include BCJR algorithm and long-MAP algorithm.
  • Step S106 performing error correction processing on the first decoding result according to the error correction code decoding algorithm to obtain a second decoding result.
  • the error correction code decoding algorithm may be a Forward Error Correction (FEC) decoding algorithm
  • FEC Forward Error Correction
  • TPC Transmission Control Coding
  • LDPC Low Density Poly Coding
  • Step S108 outputting a second decoding result.
  • the receiving end may combine the OvTDM decoding and the error correcting code decoding, and first perform OvTDM decoding on the encoded information to obtain the first Decoding the result, and performing error correction processing on the first decoding result as external information, correcting the error information into correct information, that is, performing FEC decoding, obtaining a second decoding result, and outputting a second decoding result, where In the ideal state, the second decoding result is the same as the input information of the transmitting end, but due to the difference in the performance of the decoding scheme, the output result is deviated from the input information, which is also a commonly known error.
  • the coding information output by the transmitting end is received, and the coding information is decoded according to the overlap multiplexing decoding algorithm to obtain a first decoding result, and the first decoding is performed according to the error correction code decoding algorithm.
  • error correction processing is performed to obtain a second decoding result, and the second decoding result is output.
  • the signal-to-noise ratio can achieve a lower bit error rate, and two channels of transmission data can be introduced to further improve the reliability of the overlapping multiplexing system, thereby solving the poor error correction capability of the prior art overlapping multiplexing system.
  • the method before the outputting the second decoding result in step S108, the method includes:
  • Step S110 determining whether the second decoding result satisfies a preset condition.
  • the foregoing preset condition may be an iterative condition set according to the complexity and performance requirements of the overlap multiplexing system, for example, the second decoding result satisfies the convergence condition, or the iteration number satisfies the iteration requirement.
  • Step S112 if the second decoding result satisfies the preset condition, outputting the second decoding result.
  • the iterative process is stopped, and the second decoding result is output.
  • Step S114 if the second decoding result does not satisfy the preset condition, the feedback information is obtained according to the second decoding result.
  • Step S116 decoding the encoded information and the feedback information according to the overlap multiplexing decoding algorithm to obtain a third decoding result.
  • Step S118 performing error correction processing on the third decoding result according to the error correction code decoding algorithm to obtain a fourth decoding result.
  • step S120 the fourth decoding result is used as the second decoding result, and the process returns to step S110 to determine whether the second decoding result satisfies the preset condition.
  • the iterative process needs to be continued, and the feedback information may be obtained according to the second decoding result, as the next iteration.
  • the input of the process is performed by OvTDM decoding to obtain a third decoding result, and the third decoding result is subjected to error correction processing, that is, FEC decoding is performed to obtain a fourth decoding result, and it is determined whether the fourth decoding result is satisfied.
  • the preset condition if satisfied, stops the iterative process and outputs a fourth decoding result; if not, continues the iteration, and obtains feedback information in the next iteration according to the fourth decoding result.
  • the block diagram of the receiving end structure may be as shown in FIG. 13.
  • the receiving end may use the encoding information as an input of the OvTDM decoder to perform OvTDM decoding.
  • the second decoding result is used as external information, that is, feedback information, and the feedback information and the encoded information are used as input of the OvTDM decoder, and the decoding process is repeated until the second decoding result satisfies the preset condition.
  • the second decoding result is output.
  • step S110 determining whether the second decoding result meets the preset condition comprises:
  • step S1102 the current number of iterations is obtained.
  • step S1104 it is determined whether the current number of iterations exceeds a preset number of iterations.
  • the selection of the preset number of iterations is related to the number of overlaps K, the signal to noise ratio, etc., when the number of iterations is too small, the decoding result of the system is inaccurate, and the bit error rate is slightly higher; and when the number of overlaps is large, Because the amount of calculation is too large, its complexity is higher.
  • the preset number of iterations is 60.
  • Step S1106 If the current number of iterations exceeds the preset number of iterations, it is determined that the second decoding result satisfies the preset condition.
  • Step S1108 If the current number of iterations is less than the preset number of iterations, it is determined that the second decoding result does not satisfy the preset condition.
  • the decoding result is output; if it is not reached, iteratively continues, and the feedback information obtained in the next iteration process is obtained according to the decoding result obtained by decoding in this iterative process.
  • step S114 according to the second decoding result, obtaining feedback information, including:
  • Step S1142 the second decoding result is used as feedback information.
  • the second decoding result obtained by the decoding may be directly used as an input of the next iteration process, and OvTDM decoding is performed.
  • step S104 the coding information is decoded according to the overlap multiplexing decoding algorithm, to obtain a first decoding result, including:
  • Step S1040 Decode the first encoded information according to the first overlapping multiplex decoding algorithm to obtain a fifth decoding result.
  • Step S1041 Perform error correction processing on the fifth decoding result according to the first error correction code decoding algorithm to obtain a sixth decoding result.
  • Step S1042 Perform interleaving processing on the sixth decoding result according to the first interleaving algorithm to obtain a first interleaving result.
  • interleaving is a technique used in data processing in a communication system, and the function is to maximize the concentration of errors that are generated in a channel transmission process, that is, to completely confuse the data, but does not change.
  • the data content the commonly used interleaving algorithm includes irregular interleaving, random interleaving, S-interleaving, 64*64 array interleaving, etc., and different interleaving methods have different effects on system performance.
  • the first interleaving algorithm is S. Interleaving or random interleaving is taken as an example for explanation.
  • Step S1043 Decode the second encoding information and the first interleaving result according to the second overlapping multiplexing decoding algorithm to obtain a first decoding result.
  • the interleaving, FEC decoding and OvTDM decoding may be combined.
  • the receiving end structure block diagram may As shown in FIG. 14, after receiving the I coded information and the Q coded information, the receiving end can use the I coded information as the input of the OvTDM decoder 1 to perform the first OvTDM decoding to obtain the fifth decoding.
  • the fifth decoding result is used as the outer information
  • the first error correction processing is performed, that is, the input FEC decoder 1 performs the first FEC decoding to obtain the sixth decoding result
  • the sixth decoding result is used as the sixth decoding result.
  • the outer information is input to the interleaver for interleaving to obtain a first interleaving result, and the first interleaving result is further input to the OvTDM decoder 2 for a second OvTDM decoding, thereby obtaining a first decoding result.
  • step S106 the first decoding result is corrected according to the error correction code decoding algorithm, to obtain a second decoding result, including:
  • Step S1062 Perform error correction processing on the first decoding result according to the second error correction code decoding algorithm to obtain a second decoding result.
  • the first decoding result may be used as the external information, and the second error correction processing is performed, that is, the FEC decoder 2 is input, and the second FEC decoding is performed. A second decoding result is obtained.
  • step S114 according to the second decoding result, obtaining feedback information, including:
  • Step S1144 Deinterleave the second decoding result according to the first deinterleaving algorithm to obtain feedback information, where the first deinterleaving algorithm is an inverse algorithm of the first interleaving algorithm.
  • the second decoding result may be input to the deinterleaver to perform deinterleaving processing to obtain Q channel coding information.
  • the external information that is, the feedback information, in which deinterleaving and interleaving are mutually inverse processes.
  • the external information of the I coded information and the Q coded information may be input as the input of the OvTDM decoder 1, and the above decoding may be repeated.
  • the process stops until the second decoding result satisfies the preset condition, and the second decoding result is output.
  • step S104 the coding information is decoded according to the overlap multiplexing decoding algorithm, to obtain a first decoding result, including:
  • Step S1044 Decode the first encoded information according to the third overlapping multiplex decoding algorithm to obtain a seventh decoding result.
  • Step S1045 Perform error correction processing on the seventh decoding result according to the error correction code decoding algorithm to obtain an eighth decoding result.
  • Step S1046 Perform interleaving processing on the eighth decoding result according to the second interleaving algorithm to obtain a second interleaving result.
  • Step S1047 Decode the second coding information and the second interleaving result according to the fourth overlapping multiplexing decoding algorithm to obtain a ninth decoding result.
  • Step S1048 Deinterleave the ninth decoding result according to the second deinterleaving algorithm to obtain a first decoding result, where the second deinterleaving algorithm is an inverse algorithm of the second interleaving algorithm.
  • the interleaving, FEC decoding and OvTDM decoding may be combined.
  • the receiving end structure block diagram may As shown in FIG. 15, after receiving the I coded information and the Q coded information, the receiving end can use the I coded information as the input of the OvTDM decoder 1 to perform the first OvTDM decoding to obtain the seventh decoding.
  • the seventh decoding result is used as the outer information
  • the first error correction processing is performed, that is, the input FEC decoder performs the first FEC decoding to obtain the eighth decoding result
  • the eighth decoding result is used as the eighth decoding result.
  • the outer information is input to the interleaver for interleaving to obtain a second interleaving result, and the second interleaving result is further input to the OvTDM decoder 2 for the second OvTDM decoding to obtain a ninth decoding result, and then the ninth decoding is further performed.
  • the input deinterleaver performs deinterleaving as the outer information, thereby obtaining the first decoding result.
  • the first decoding result may be input to the FEC decoder again, and the second error correction processing is performed, that is, the second FEC decoding is performed.
  • the second decoding result may be used as external information of the Q-channel coding information, that is, feedback information, and the feedback information and the I-channel coding information
  • the OvTDM decoder 1 is input, and the above decoding process is repeated until the second decoding result satisfies the preset condition, the iteration is stopped, and the second decoding result is output.
  • the method after receiving the encoding information output by the sending end, the method further includes:
  • Step S122 preprocessing the encoded information to obtain the processed encoded information.
  • the encoding information may be pre-processed, and may include operations such as synchronization, channel estimation, and equalization, and the processed encoded information is obtained, and then processed.
  • the encoded information is OvTDM decoded and FEC decoded.
  • the input information sequence is X
  • the TPC code is used as the error correction code.
  • the transmitting end first pre-codes the input information X through TPC, then enters the OvTDM system code, and transmits the encoded signal through the antenna.
  • the signal is transmitted through the channel, and the receiving end receives the signal Y through the antenna, and first performs a series of processing thereof, including synchronization, channel estimation, equalization, etc.
  • the decoding step is as follows: (1) setting the number of iterations Item; (2) using Y' as the input information of the OvTDM decoder, performing OvTDM decoding to obtain the first decoding result; (3) the first decoding obtained in (2) As a result, FEC decoding is performed as external information to obtain a second decoding result; (4) the second decoding result obtained in (3) is used as input information of the OvTDM decoder, and the above steps (2) to (3) are repeated. The iteration is stopped until a certain condition is satisfied or the number of iterations is reached; (5) the decoding result X is output.
  • the transmitting end first pre-codes the input information X through TPC, then enters the OvTDM system code, and transmits the encoded signal through the antenna.
  • the signal is transmitted through the channel, and the receiving end receives the signal Y through the antenna, first performs a series of processing thereof, including synchronization, channel estimation, equalization, etc.
  • the decoding steps of the I channel data and the Q channel data are as follows: (1) setting the number of iterations Item; (2) using the I channel data as the input information of the OvTDM decoder 1, performing the first OvTDM decoding, and obtaining the fifth The decoding result is obtained; (3) the fifth decoding result obtained in (2) is used as external information, input to the FEC decoder 1, and the first FEC decoding is performed to obtain a sixth decoding result; (4) The sixth decoding result obtained in 3) is used as external information, and is input to an interleaver for interleaving to obtain a first interleaving result; (5) the first interleaving result obtained in (4) is continuously input to the OvTDM decoder 2 for The second OvTDM decoding operation simultaneously inputs the Q channel data into the OvTDM system decoder 2 for OvTDM decoding to obtain the first decoding result; (6) the first decoding result obtained obtained
  • the input FEC decoder 2 performs the second FEC decoding to obtain the second decoding result; (7) the result obtained in (6) a second decoding result, performing deinterleaving to obtain a first deinterleaving result; (8) using the first deinterleaving result obtained in (7) as input information of the OvTDM decoder 1, repeating the above steps (2) to ( 7), until the certain condition is met or the number of iterations is reached, the iteration is stopped; (9) the decoding result X is output.
  • FIG. 15 A further preferred embodiment of the present invention will be described in detail below with reference to FIG. 15.
  • the input information sequence is X
  • the Chebyshev window is The waveform is multiplexed
  • the TPC code is used as an error correction code.
  • the transmitting end first pre-codes the input information X through TPC, then enters the OvTDM system code, and transmits the encoded signal through the antenna.
  • the signal is transmitted through the channel, and the receiving end receives the signal Y through the antenna, first performs a series of processing thereof, including synchronization, channel estimation, equalization, etc.
  • the decoding steps of the I channel data and the Q channel data are as follows: (1) setting the number of iterations Item; (2) using the I channel data as the input information of the OvTDM decoder 1, performing the first OvTDM decoding, and obtaining the seventh Decoding result; (3) using the seventh decoding result obtained in (2) as external information, inputting into the FEC decoder, performing the first FEC decoding, and obtaining the eighth decoding result; (4) (3) The eighth decoding result obtained as the outer information is input to the interleaver for interleaving to obtain the second interleaving result; (5) the second interleaving result obtained in (4) is continuously input to the OvTDM decoder 2 for the second The second OvTDM decoding, at the same time, the Q channel data is also input into the OvTDM system decoder 2 for the OvTDM decoding operation to obtain the ninth decoding result; (6) the ninth decoding result obtained in
  • the combination of FEC decoding and OvTDM decoding not only improves the error correction capability of the overlapping multiplexing system, but also reduces the bit error rate of the overlapping multiplexing system and enhances the reliability of the overlapping multiplexing system.
  • sexuality a lower signal-to-noise ratio can achieve a lower bit error rate at high spectral efficiency, and the reliability of the overlay multiplexing system is also improved because the system introduces both I and Q transmission data.
  • the block diagram of the transmitting end structure and the block diagram of the receiving end in the foregoing embodiment of the present invention are flexible, and the transmitting end can also adopt the structure shown in FIG. 16 , and the corresponding receiving end can adopt the FIG. 17 and the figure.
  • both structures can implement the decoding function, but the result is not limited thereto.
  • the foregoing embodiments of the present invention can be applied not only to the OvXDM system, but also to practical mobile communication systems, such as TD-LTE, TD-SCDMA, etc., and can also be widely applied to satellite communications. , wireless line-of-sight communication, scatter communication, atmospheric optical communication, infrared communication and aquatic communication in any wireless communication system. It can be applied to both large-capacity wireless transmissions and small-capacity lightweight radio systems.
  • an embodiment of a processing device of an overlay multiplexing system is provided.
  • FIG. 19 is a schematic diagram of a processing apparatus of an overlay multiplexing system according to an embodiment of the present invention. As shown in FIG. 19, the apparatus includes:
  • the receiving module 191 is configured to receive the encoded information output by the transmitting end, where the encoding information is information obtained by performing error correction code encoding and overlapping multiplexing encoding on the input information.
  • the above-mentioned overlapping multiplex coding may be OvXDM coding.
  • the OvTDM system is taken as an example for detailed description.
  • the OvTDM system transmission signal block diagram is shown in FIG. 2, and the specific steps are as follows: (1) First design Generating an envelope waveform h(t) of the transmitted signal; (2) shifting the envelope waveform h(t) designed in (1) by a specific time to form a signal envelope waveform h (ti ⁇ ) at each other time ⁇ T); (3) multiplying the symbol x i to be transmitted and the envelope waveform h (ti ⁇ ⁇ T) at the corresponding time generated by (2) to obtain a signal waveform x i h (ti ⁇ ⁇ T) to be transmitted at each moment.
  • the transmitted signal can be expressed as: Where the symbol is sent Corresponds to the input data sequence P i in 1 .
  • the OvTDM receiving signal block diagram is shown in Figure 3.
  • the K-channel waveform multiplexing is shown in Figure 4.
  • the OvTDM system input-output relationship diagram is shown in Figure 5.
  • the node state transition diagram is shown in Figure 6.
  • the OvTDM system Trellis diagram (grid) As shown in Figure 7, the transmitting end transmits the coded modulated signal through the antenna, and the signal is transmitted in the wireless channel.
  • the receiving end first preprocesses the received signal, then performs matched filtering on the received signal, and then separately separates the signal. Sampling, decoding, and finally determining the output bit stream.
  • the specific steps are as follows: (1) First, the received signal is synchronized, including carrier synchronization, frame synchronization, symbol time synchronization, etc.; (2) digitally processing the received signal in each frame according to the sampling theorem; (3) receiving The waveform to be cut is cut according to the waveform transmission time interval, that is, the signal is sampled; (4) the cut waveform is decoded according to a certain decoding algorithm.
  • the error correction code coding may be precoding using an error correction code
  • the precoding function is to perform preliminary coding on the input bit stream
  • the precoding can improve the error correction capability of the information flow, reduce the system error rate, and provide The higher the code rate, and the reliability of the information bit stream
  • the precoding method includes a convolutional code, a Turbo code, a Turbo Product Code (TPC code), etc., in the embodiment of the present invention.
  • the precoding process is illustrated by taking the TPC code as an example.
  • the TPC code belongs to a class of Turbo codes.
  • the TPC code is actually an array Turbo code, which consists of two component encoders, row and column, which form a two-dimensional TPC code.
  • the component code may be a convolutional code or a simple block code such as a Hamming code, a BCH code, or even a parity code.
  • the coding array of the TPC can be further extended to three-dimensional or more. For example, diagonal coding is added on the basis of the two-dimensional row and column coding, and the matrix is further expanded by one row or one column of parity information, as shown in FIG.
  • the TPC encoding process is mainly divided into three steps: (1) first placing information bits in a K C * K R matrix; (2) encoding K C bits per line into codewords of length N C ; (3) ) each column K R N R bits are encoded into a codeword; (4) the encoded into N C * N R of the codeword matrix by a column output, the encoding process, the encoding rate of the TPC TPC coding is very flexible. Since the minimum Hamming distance of the TPC code is equal to the product of the component code and the minimum Hamming distance, the TPC code can achieve excellent performance with a simple Hamming code.
  • the component code can be constructed with a TPC (64, 57) code whose performance can be compared with the Turbo code by using an extension (64, 57) Hamming code that can correct only one error.
  • This type of coding not only has excellent error correction performance, but also Has a higher code rate.
  • the foregoing encoding information includes: first encoding information and second encoding information, where the symbol lengths of the first encoding information and the second encoding information are the same.
  • the first coding information may be I-channel coding information
  • the second coding information may be Q-channel coding information
  • the first decoding module 193 is configured to decode the encoded information according to the overlap multiplexing decoding algorithm to obtain a first decoding result.
  • the above-mentioned overlapping multiplex decoding algorithm may be an OvXDM decoding algorithm.
  • the OvTDM system is taken as an example for detailed description. Since the OvTDM system and the error correcting code are combined and decoded, the OvTDM translation is required. The output of the code is a soft value.
  • Commonly used decoding algorithms include BCJR algorithm and long-MAP algorithm.
  • the second decoding module 195 is configured to perform error correction processing on the first decoding result according to the error correction code decoding algorithm to obtain a second decoding result.
  • the error correction code decoding algorithm may be a Forward Error Correction (FEC) decoding algorithm
  • FEC Forward Error Correction
  • TPC Transmission Control Coding
  • LDPC Low Density Poly Coding
  • the output module 197 is configured to output a second decoding result.
  • the coding information output by the transmitting end is received, and the coding information is decoded according to the overlap multiplexing decoding algorithm to obtain a first decoding result, and the first decoding is performed according to the error correction code decoding algorithm.
  • error correction processing is performed to obtain a second decoding result, and the second decoding result is output.
  • the signal-to-noise ratio can achieve a lower bit error rate, and two channels of transmission data can be introduced to further improve the reliability of the overlapping multiplexing system, thereby solving the poor error correction capability of the prior art overlapping multiplexing system, resulting in poor error correction capability.
  • the apparatus further includes: a determining module, configured to determine whether the second decoding result meets a preset condition; and the output module 197 is further configured to: if the second decoding result meets the preset condition And outputting a second decoding result; the first processing module is configured to: if the second decoding result does not satisfy the preset condition, obtain feedback information according to the second decoding result; and the third decoding module is configured to The multiplexing decoding algorithm decodes the encoding information and the feedback information to obtain a third decoding result, and the fourth decoding module is configured to perform error correction processing on the third decoding result according to the error correction code decoding algorithm. Obtaining a fourth decoding result; the second processing module is configured to use the fourth decoding result as the second decoding result, and return to performing the function of the determining module.
  • a determining module configured to determine whether the second decoding result meets a preset condition
  • the output module 197 is further configured to: if the second decoding result meets the preset condition And outputting a second
  • the determining module includes: an obtaining submodule, configured to obtain a current number of iterations; and a determining submodule, configured to determine whether the current iteration number exceeds a preset number of iterations; the first determining submodule, And if the current number of iterations exceeds the preset number of iterations, determining that the second decoding result meets the preset condition; and the second determining submodule is configured to determine that the second decoding result is not if the current number of iterations is less than the preset number of iterations Meet the preset conditions.
  • the first processing module is further configured to use the second decoding result as the feedback information.
  • the first decoding module 193 includes: a first decoding sub-module, configured to decode the first encoded information according to the first overlapping multiplexing decoding algorithm, to obtain a first a fifth decoding sub-module, configured to perform error correction processing on the fifth decoding result according to the first error correction code decoding algorithm to obtain a sixth decoding result;
  • the first interleaving sub-module is configured to: Performing an interleaving process on the sixth decoding result to obtain a first interleaving result according to the first interleaving algorithm, and a third decoding submodule, configured to perform, according to the second overlapping multiplexing decoding algorithm, the second encoding information and the first interleaving The result is decoded to obtain a first decoding result.
  • the second decoding module 195 is further configured to perform error correction processing on the first decoding result according to the second error correction code decoding algorithm to obtain a second decoding result.
  • the first processing module includes: a first de-interleaving sub-module, configured to perform de-interleaving processing on the second decoding result according to the first de-interleaving algorithm, to obtain feedback information, where
  • the first de-interlacing algorithm is an inverse algorithm of the first interleaving algorithm.
  • the first decoding module 193 includes: a fourth decoding sub-module, configured to decode the first encoded information according to the third overlapping multiplexing decoding algorithm, to obtain the first a decoding result, a fifth decoding sub-module, configured to perform error correction processing on the seventh decoding result according to the error correction code decoding algorithm, to obtain an eighth decoding result, and a second interleaving sub-module for a second interleaving algorithm, performing an interleaving process on the eighth decoding result to obtain a second interleaving result, and a sixth decoding submodule, configured to perform the second encoding information and the second interleaving result according to the fourth overlapping multiplexing decoding algorithm Decoding, the ninth decoding result is obtained; the second de-interleaving sub-module is configured to perform de-interleaving processing on the ninth decoding result according to the second de-interleaving algorithm, to obtain a first decoding result, where the second de
  • the apparatus further includes: a third processing module, configured to perform pre-processing on the encoded information to obtain the processed encoded information.
  • an embodiment of a processing system for an overlay multiplexing system is provided.
  • FIG. 20 is a schematic diagram of a processing system of an overlay multiplexing system according to an embodiment of the present invention. As shown in FIG. 20, the system includes:
  • the transmitting end 201 is configured to output encoded information, where the encoded information is information obtained by performing error correction code encoding and overlapping multiplexing encoding on the input information.
  • the above-mentioned overlapping multiplex coding may be OvXDM coding.
  • the OvTDM system is taken as an example for detailed description.
  • the OvTDM system transmission signal block diagram is shown in FIG. 2, and the specific steps are as follows: (1) First design Generating an envelope waveform h(t) of the transmitted signal; (2) shifting the envelope waveform h(t) designed in (1) by a specific time to form a signal envelope waveform h (ti ⁇ ) at each other time ⁇ T); (3) multiplying the symbol x i to be transmitted and the envelope waveform h (ti ⁇ ⁇ T) at the corresponding time generated by (2) to obtain a signal waveform x i h (ti ⁇ ⁇ T) to be transmitted at each moment.
  • the transmitted signal can be expressed as: Where the symbol is sent Corresponds to the input data sequence P i in 1 .
  • the OvTDM receiving signal block diagram is shown in Figure 3.
  • the K-channel waveform multiplexing is shown in Figure 4.
  • the OvTDM system input-output relationship diagram is shown in Figure 5.
  • the node state transition diagram is shown in Figure 6.
  • the OvTDM system Trellis diagram (grid) As shown in Figure 7, the transmitting end transmits the coded modulated signal through the antenna, and the signal is transmitted in the wireless channel.
  • the receiving end first preprocesses the received signal, then performs matched filtering on the received signal, and then separately separates the signal. Sampling, decoding, and finally determining the output bit stream.
  • the specific steps are as follows: (1) First, the received signal is synchronized, including carrier synchronization, frame synchronization, symbol time synchronization, etc.; (2) digitally processing the received signal in each frame according to the sampling theorem; (3) receiving The waveform to be cut is cut according to the waveform transmission time interval, that is, the signal is sampled; (4) the cut waveform is decoded according to a certain decoding algorithm.
  • the error correction code coding may be precoding using an error correction code
  • the precoding function is to perform preliminary coding on the input bit stream
  • the precoding can improve the error correction capability of the information flow, reduce the system error rate, and provide The higher the code rate, and the reliability of the information bit stream
  • the precoding method includes a convolutional code, a Turbo code, a Turbo Product Code (TPC code), etc., in the embodiment of the present invention.
  • the precoding process is illustrated by taking the TPC code as an example.
  • the TPC code belongs to a class of Turbo codes.
  • the TPC code is actually an array Turbo code, which includes two component encoders of row and column to form a two-dimensional TPC code.
  • the component code may be a convolutional code or a simple block code such as a Hamming code, a BCH code, or even a parity code.
  • the coding array of the TPC can be further extended to three-dimensional or more. For example, diagonal coding is added on the basis of the two-dimensional row and column coding, and the matrix is further expanded by one row or one column of parity information, as shown in FIG.
  • the TPC encoding process is mainly divided into three steps: (1) first placing information bits in a K C * K R matrix; (2) encoding K C bits per line into codewords of length N C ; (3) Encoding each column of K R bits into a codeword of NR ; (4) outputting the encoded N C * N R codeword matrix in columns to complete the encoding process, and the code rate of the TPC encoding is TPC coding is very flexible. Since the minimum Hamming distance of the TPC code is equal to the product of the component code and the minimum Hamming distance, the TPC code can achieve excellent performance with a simple Hamming code.
  • the component code can be constructed with a TPC (64, 57) code whose performance can be compared with the Turbo code by using an extension (64, 57) Hamming code that can correct only one error.
  • This type of coding not only has excellent error correction performance, but also Has a higher code rate.
  • the foregoing encoding information includes: first encoding information and second encoding information, where the symbol lengths of the first encoding information and the second encoding information are the same.
  • the first coding information may be I-channel coding information
  • the second coding information may be Q-channel coding information
  • the receiving end 203 has a communication relationship with the transmitting end, and is configured to decode the encoded information according to the overlapping multiplexing decoding algorithm to obtain a first decoding result, and perform the first decoding result according to the error correction code decoding algorithm.
  • the error correction process obtains a second decoding result and outputs a second decoding result.
  • the above-mentioned overlapping multiplex decoding algorithm may be an OvXDM decoding algorithm.
  • the OvTDM system is taken as an example for detailed description. Since the OvTDM system and the error correcting code are combined and decoded, the OvTDM translation is required. The output of the code is a soft value.
  • Commonly used decoding algorithms include BCJR algorithm and long-MAP algorithm.
  • the above error correction code decoding algorithm may be a Forward Error Correction (FEC) decoding algorithm, and FEC is a method for increasing the reliability of data communication, and the method for transmitting redundant information by using data may appear in transmission. An error will allow the receiver to rebuild the data.
  • FEC Forward Error Correction
  • TPC and LDPC which are soft-in and soft-out.
  • the TPC code is taken as an example for description, and the received data may be first decoded and then decoded. Exchange each other's soft information.
  • the coding information output by the transmitting end is received, and the coding information is decoded according to the overlap multiplexing decoding algorithm to obtain a first decoding result, and the first decoding is performed according to the error correction code decoding algorithm.
  • error correction processing is performed to obtain a second decoding result, and the second decoding result is output.
  • the signal-to-noise ratio can achieve a lower bit error rate, and two channels of transmission data can be introduced to further improve the reliability of the overlapping multiplexing system, thereby solving the poor error correction capability of the prior art overlapping multiplexing system.
  • the receiving end is further configured to determine whether the second decoding result meets a preset condition, and if the second decoding result meets the preset condition, output a second decoding result, if If the decoding result does not satisfy the preset condition, the feedback information is obtained according to the second decoding result, and the encoding information and the feedback information are decoded according to the overlapping multiplexing decoding algorithm to obtain a third decoding result, according to the error correction.
  • the code decoding algorithm performs error correction processing on the third decoding result to obtain a fourth decoding result, and uses the fourth decoding result as the second decoding result, and returns to perform execution to determine whether the second decoding result satisfies the preset The steps of the condition.
  • the receiving end is further configured to obtain a current number of iterations, determine whether the current number of iterations exceeds a preset number of iterations, and determine a second decoding result if the current number of iterations exceeds a preset number of iterations.
  • the preset condition is met, and if the current number of iterations is less than the preset number of iterations, it is determined that the second decoding result does not satisfy the preset condition.
  • the receiving end is further configured to use the second decoding result as the feedback information.
  • the receiving end is further configured to: according to the first overlapping multiplex decoding algorithm, decode the first encoded information, obtain a fifth decoding result, and translate according to the first error correction code.
  • a code algorithm performs error correction processing on the fifth decoding result to obtain a sixth decoding result, and performs interleaving processing on the sixth decoding result according to the first interleaving algorithm to obtain a first interleaving result, and according to the second overlapping multiplexing
  • the decoding algorithm decodes the second encoded information and the first interleaved result to obtain a first decoding result.
  • the receiving end is further configured to perform error correction processing on the first decoding result according to the second error correction code decoding algorithm to obtain a second decoding result.
  • the receiving end is further configured to perform deinterleaving processing on the second decoding result according to the first deinterleaving algorithm to obtain feedback information, where the first deinterleaving algorithm is the first interleaving The inverse algorithm of the algorithm.
  • the receiving end is further configured to: according to the third overlapping multiplex decoding algorithm, decode the first encoded information, to obtain a seventh decoding result, and according to the error correcting code decoding algorithm.
  • Performing error correction processing on the seventh decoding result to obtain an eighth decoding result and performing interleaving processing on the eighth decoding result according to the second interleaving algorithm to obtain a second interleaving result according to the fourth overlapping multiplexing decoding algorithm
  • Decoding the second coding information and the second interleaving result to obtain a ninth decoding result, and performing deinterleaving processing on the ninth decoding result according to the second deinterleaving algorithm to obtain a first decoding result, where
  • the second de-interlacing algorithm is the inverse algorithm of the second interleaving algorithm.
  • the receiving end is further configured to perform pre-processing on the encoded information to obtain the processed encoded information.
  • a storage medium includes a stored program, wherein the device in which the storage medium is located controls the processing method of the overlapping multiplexing system of any of the above-mentioned Embodiments 1 when the program is running.
  • the coding information output by the transmitting end is received, and the coding information is decoded according to the overlap multiplexing decoding algorithm to obtain a first decoding result, and the first decoding is performed according to the error correction code decoding algorithm.
  • error correction processing is performed to obtain a second decoding result, and the second decoding result is output.
  • the signal-to-noise ratio can achieve a lower bit error rate, and two channels of transmission data can be introduced to further improve the reliability of the overlapping multiplexing system, thereby solving the poor error correction capability of the prior art overlapping multiplexing system.
  • a processor configured to execute a program, wherein the processing method of the overlap multiplexing system according to any one of Embodiment 1 is executed while the program is running .
  • the coding information output by the transmitting end is received, and the coding information is decoded according to the overlap multiplexing decoding algorithm to obtain a first decoding result, and the first decoding is performed according to the error correction code decoding algorithm.
  • error correction processing is performed to obtain a second decoding result, and the second decoding result is output.
  • the signal-to-noise ratio can achieve a lower bit error rate, and two channels of transmission data can be introduced to further improve the reliability of the overlapping multiplexing system, thereby solving the poor error correction capability of the prior art overlapping multiplexing system, resulting in poor error correction capability.
  • a terminal including: receiving means, configured to receive coded information output by a transmitting end, where the encoded information is information obtained by performing error correcting code encoding and overlapping multiplexing encoding on the input information; a storage medium for storing a program, wherein the program performs the following processing steps on the data output from the receiving device during operation: decoding the encoded information according to the overlapping multiplexing decoding algorithm to obtain a first decoding result, according to the correction The error code decoding algorithm performs error correction processing on the first decoding result to obtain a second decoding result, and outputs a second decoding result.
  • the foregoing terminal may be a receiving end.
  • the coding information output by the transmitting end is received, and the coding information is decoded according to the overlap multiplexing decoding algorithm to obtain a first decoding result, and the first decoding is performed according to the error correction code decoding algorithm.
  • error correction processing is performed to obtain a second decoding result, and the second decoding result is output.
  • the signal-to-noise ratio can achieve a lower bit error rate, and two channels of transmission data can be introduced to further improve the reliability of the overlapping multiplexing system, thereby solving the poor error correction capability of the prior art overlapping multiplexing system.
  • a terminal including: receiving means, configured to receive coded information output by a transmitting end, where the encoded information is information obtained by performing error correcting code encoding and overlapping multiplexing encoding on the input information; a processor, the processor runs a program, wherein the program is executed to perform the following processing steps on the data output from the receiving device: decoding the encoded information according to the overlap multiplexing decoding algorithm to obtain a first decoding result, according to error correction The code decoding algorithm performs error correction processing on the first decoding result to obtain a second decoding result, and outputs a second decoding result.
  • the foregoing terminal may be a receiving end.
  • the coding information output by the transmitting end is received, and the coding information is decoded according to the overlap multiplexing decoding algorithm to obtain a first decoding result, and the first decoding is performed according to the error correction code decoding algorithm.
  • error correction processing is performed to obtain a second decoding result, and the second decoding result is output.
  • the signal-to-noise ratio can achieve a lower bit error rate, and two channels of transmission data can be introduced to further improve the reliability of the overlapping multiplexing system, thereby solving the poor error correction capability of the prior art overlapping multiplexing system, resulting in poor error correction capability.
  • the disclosed technical contents may be implemented in other manners.
  • the device embodiments described above are only schematic.
  • the division of the unit may be a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or may be Integrate into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, unit or module, and may be electrical or otherwise.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the technical solution of the present invention which is essential or contributes to the prior art, or all or part of the technical solution, may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included to cause a computer device (which may be a personal computer, server or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk, and the like. .

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Abstract

本发明公开了一种重叠复用系统的处理方法、装置及系统。其中，该方法包括：接收发送端输出的编码信息，其中，编码信息为对输入信息进行纠错码编码和重叠复用编码所得到的信息；根据重叠复用译码算法，对编码信息进行译码，得到第一译码结果；根据纠错码译码算法，对第一译码结果进行纠错处理，得到第二译码结果；输出第二译码结果。本发明解决了现有技术中的重叠复用系统的纠错能力差，导致重叠复用系统可靠性低的技术问题。

Description

重叠复用系统的处理方法、装置及系统 技术领域
本发明涉及重叠复用系统领域，具体而言，涉及一种重叠复用系统的处理方法、装置及系统。
背景技术
重叠复用OvXDM系统的优势在于重叠复用，利用编码约束关系提高了频谱效率，其中，X代表任何域，例如，时间域T，即OvTDM(Overlapped Time Division Multiplexing，重叠时分复用)；类似的有空间域S，OvSDM(Overlapped Space Division Multiplexing，重叠空分复用)；频率域F，OvFDM(Overlapped Frequency Division Multiplexing，重叠频分复用)；码分域C，OvCDM(Overlapped Code Division Multiplexing，重叠码分复用)或混合域H，OvHDM(Overlapped Hybrid Division Multiplexing，时频二维重叠复用)等。OvXDM系统随着频谱效率的提高，门限信噪比也会随之提高，且在低频谱效率的情况下，编码增益较低。而且，由于这种系统结构比较单一，纠错能力有限，随着重叠次数K的增加，误码率也随之增大，破坏了系统的可靠性。
针对现有技术中的重叠复用系统的纠错能力差，导致重叠复用系统可靠性低的问题，目前尚未提出有效的解决方案。
发明内容
本发明实施例提供了一种重叠复用系统的处理方法、装置及系统，以至少解决现有技术中的重叠复用系统的纠错能力差，导致重叠复用系统可靠性低的技术问题。
根据本发明实施例的一个方面，提供了一种重叠复用系统的处理方法，包括：接收发送端输出的编码信息，其中，编码信息为对输入信息进行纠错码编码和重叠复用编码所得到的信息；根据重叠复用译码算法，对编码信息进行译码，得到第一译码结果；根据纠错码译码算法，对第一译码结果进行纠错处理，得到第二译码结果；输出第二译码结果。
根据本发明实施例的另一方面，还提供了一种重叠复用系统的处理装置，包括：接收模块，用于接收发送端输出的编码信息，其中，编码信息为对输入信息进行纠错码编码和重叠复用编码所得到的信息；第一译码模块，用于根据重叠复用译码算法，对编码信息进行译码，得到第一译码结果；第二译码模块，用于根据纠错码译码算法， 对第一译码结果进行纠错处理，得到第二译码结果；输出模块，用于输出第二译码结果。
根据本发明实施例的另一方面，还提供了一种重叠复用系统的处理系统，包括：发送端，用于输出编码信息，其中，编码信息为对输入信息进行纠错码编码和重叠复用编码所得到的信息；接收端，与发送端具有通信关系，用于根据重叠复用译码算法，对编码信息进行译码，得到第一译码结果，根据纠错码译码算法，对第一译码结果进行纠错处理，得到第二译码结果，并输出第二译码结果。
根据本发明实施例的另一方面，还提供了一种存储介质，存储介质包括存储的程序，其中，在程序运行时控制存储介质所在设备执行上述实施例中的重叠复用系统的处理方法。
根据本发明实施例的另一方面，还提供了一种处理器，包括：处理器用于运行程序，其中，程序运行时执行上述实施例中的重叠复用系统的处理方法。
根据本发明实施例的另一方面，还提供了一种终端，包括：接收装置，用于接收发送端输出的编码信息，其中，编码信息为对输入信息进行纠错码编码和重叠复用编码所得到的信息；存储介质，用于存储程序，其中，程序在运行时对于从接收装置输出的数据执行如下处理步骤：根据重叠复用译码算法，对编码信息进行译码，得到第一译码结果，根据纠错码译码算法，对第一译码结果进行纠错处理，得到第二译码结果，并输出第二译码结果。
根据本发明实施例的另一方面，还提供了一种终端，包括：接收装置，用于接收发送端输出的编码信息，其中，编码信息为对输入信息进行纠错码编码和重叠复用编码所得到的信息；处理器，处理器运行程序，其中，程序运行时对于从接收装置输出的数据执行如下处理步骤：根据重叠复用译码算法，对编码信息进行译码，得到第一译码结果，根据纠错码译码算法，对第一译码结果进行纠错处理，得到第二译码结果，并输出第二译码结果。
在本发明实施例中，接收发送端输出的编码信息，根据重叠复用译码算法，对编码信息进行译码，得到第一译码结果，根据纠错码译码算法，对第一译码结果进行纠错处理，得到第二译码结果，输出第二译码结果。容易注意到的是，由于接收端将重叠复用译码和纠错码译码相结合，提高了信息流的纠错能力和可靠性，降低系统误码率，在高谱效率时较低的信噪比就可达到较低的误码率，并且可以引入两路传输数据来进一步提升重叠复用系统的可靠性，从而解决了现有技术中的重叠复用系统的纠错能力差，导致重叠复用系统可靠性低的技术问题。
附图说明
此处所说明的附图用来提供对本发明的进一步理解，构成本申请的一部分，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1是根据本发明实施例的一种重叠复用系统的处理方法的流程图；
图2是根据本发明实施例的一种可选的OvTDM系统发射信号的示意图；
图3是根据本发明实施例的一种可选的OvTDM波形卷积编码模型的示意图；
图4是根据本发明实施例的一种可选的OvTDM系统接收信号的示意图；
图5是根据本发明实施例的一种可选的K路波形复用的示意图；
图6是根据本发明实施例的一种可选的OvTDM系统的输入输出关系图；
图7是根据本发明实施例的一种可选的OvTDM系统的节点状态转移图；
图8是根据本发明实施例的一种可选的OvTDM系统Trellis图；
图9是根据本发明实施例的一种可选的二维TPC编码图；
图10是根据本发明实施例的一种可选的OvTDM系统发送端的示意图；
图11是根据本发明实施例的另一种可选的OvTDM系统发送端的示意图；
图12是根据本发明实施例的又一种可选的OvTDM系统发送端的示意图；
图13是根据本发明实施例的一种可选的OvTDM系统接收端的示意图；
图14是根据本发明实施例的另一种可选的OvTDM系统接收端的示意图；
图15是根据本发明实施例的又一种可选的OvTDM系统接收端的示意图；
图16是根据本发明实施例的再一种可选的OvTDM系统发送端的示意图；
图17是根据本发明实施例的再一种可选的OvTDM系统接收端的示意图；
图18是根据本发明实施例的再一种可选的OvTDM系统接收端的示意图；
图19是根据本发明实施例的一种重叠复用系统的处理装置的示意图；以及
图20是根据本发明实施例的一种重叠复用系统的处理系统的示意图。
具体实施方式
为了使本技术领域的人员更好地理解本发明方案，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分的实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都应当属于本发明保护的范围。
需要说明的是，本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的本发明的实施例能够以除了在这里图示或描述的那些以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
实施例1
根据本发明实施例，提供了一种重叠复用系统的处理方法的实施例，需要说明的是，在附图的流程图示出的步骤可以在诸如一组计算机可执行指令的计算机系统中执行，并且，虽然在流程图中示出了逻辑顺序，但是在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤。
图1是根据本发明实施例的一种重叠复用系统的处理方法的流程图，如图1所示，该方法包括如下步骤：
步骤S102，接收发送端输出的编码信息，其中，编码信息为对输入信息进行纠错码编码和重叠复用编码所得到的信息。
具体地，上述的重叠复用编码可以是OvXDM编码，在本发明实施例中，以OvTDM系统为例进行详细说明，本领域的技术人员基于通信域的选择和转换，可以将本实施例所提供的方案应用在其他的重叠复用系统中。例如对OvFDM系统，在接收信号进行傅里叶变换，并进行相关的处理，可以转换为与OvTDM相近似的处理步骤。
OvTDM系统发射信号框图如图2所示，OvTDM波形卷积编码模型如图3所示，具体步骤如下：(1)首先设计生成发送信号的包络波形h(t)；(2)将(1)中所设计的包络波形h(t)经特定时间移位后，形成其它各个时刻发送信号包络波形h(t-i×ΔT)；(3)将所要发送的符号x i与(2)生成的相应时刻的包络波形h(t-i×ΔT)相乘，得到各个时刻的待发送信号波形x ih(t-i×ΔT)；(4)将(3)所形成的各个待发送波形进行x ih(t-i×ΔT)叠加，形成发射信号波形；(5)发送的信号可以表示为：
Figure PCTCN2018079724-appb-000001
其中，发送符号
Figure PCTCN2018079724-appb-000002
对应1中的输入数据序列P i。OvTDM接收信号框图如图4所示，在依次对接收信号进行同步、信道估计和数字化处理等预处理后，信号进行序列检测。具体的，序列检测单元在检测过程中，分析单元存储器做出重叠时分复用系统的复数卷积编码模型及格状图，并列出重叠时分复用系统的全部状态，并存储；而比较器根据分析单元存储器中的格状图，搜索出与接收数字信号最小欧氏距离或加权最小欧氏距离的路径；而保留路径存储器和欧氏距离存储器或加权欧氏距离存储器则分别用于存储比较器输出的保留路径和欧氏距离或加权欧氏距离。其中，保留路径存储器和欧氏距离存储器或加权欧氏距离存储器需要为每一个稳定状态各准备一个。保留路径存储器长度可以优选为4K～5K。欧氏距离存储器或加权欧氏距离存储器优选为只存储相对距离。
K路波形复用如图5所示，其呈平行四边形形状。其中，每一行表示一个所要发送的符号x i与相应时刻的包络波形h(t-i *ΔT)相乘后得到的待发送信号波形x ih(t-i *ΔT)。a 0～a k-1表示对每个窗函数波形(包络波形)进行K次分段得到的每部分的系数值，具体为关于幅度值的系数。
OvTDM系统输入输出关系图如图6所示，在一个节点处，向上为+1，向下为-1，对于每个节点进行判断，最终获得节点转移路径，根据此转移关系即可求出输入的符号序列。而具体节点状态转移图如图7所示，即对于一个节点，其状态转移的方式仅在图7中的任一种，只要确定各种转移的可能性，从而确定转移的方式即可。
OvTDM系统Trellis图(格状图)如图8所示，其即为整个输出过程的各个节点状态转移的总图，本申请在此不做赘述。
发送端将编码调制后的信号通过天线发射出去，信号在无线信道中传输，接收端首先对接收信号进行预处理，然后对接收信号进行匹配滤波，再对信号分别进行抽样、译码，最终判决输出比特流。具体步骤如下：(1)首先对接收信号进行同步，包括载波同步、帧同步、符号时间同步等；(2)根据取样定理，对每一帧内的接收信号进行数字化处理；(3)对接收到的波形按照波形发送时间间隔切割，即对信号进行抽样；(4)按照一定的译码算法对切割后的波形进行译码。
具体地，上述的纠错码编码可以是使用纠错码的预编码，例如，FEC编码。预编码的作用是对输入比特流进行初步编码，预编码能够提高信息流的纠错能力，降低系统误码率，提供较高的码率，同时增强信息比特流的可靠性，预编码的方法有多种，包括卷积码、Turbo码、Turbo乘积码(Turbo Product Code，TPC码)等，在本发明实施例中以TPC码为例说明预编码过程。TPC码属于Turbo码的一类，TPC编码实际上是一种阵列Turbo编码，包含行和列两个分量编码器，构成二维TPC码。其分量码可 以是卷积码，也可以是简单的分组码，如汉明码、BCH码、甚至是奇偶校验码。TPC的编码阵列也可以进一步扩充到三维或更多，比如在二维行列编码的基础上再添加对角线编码，将矩阵再扩充一行或一列校验位信息，如图9所示。TPC编码过程主要分为三步：(1)先将信息比特放置在一个K C *K R矩阵中；(2)将每行的K C个比特编码成长度为N C的码字；(3)将每列K R个比特编码成N R的码字；(4)将编码成的N C *N R码字矩阵按列输出，完成编码过程，TPC编码的码率为
Figure PCTCN2018079724-appb-000003
TPC编码具有很强的灵活性，由于TPC码的最小汉明距离等于分量码和最小汉明距离之积，因此TPC码采用简单的汉明码就可以获得优异的性能。比如分量码采用仅可以纠正一个错误的扩展(64，57)汉明码就可以构造出性能可以和Turbo码相比的TPC(64，57)码，该类编码不仅具有优异的纠错性能，而且具有较高的码率。
具体地，上述的第一编码信息可以是I路编码信息，上述的第二编码信息可以是Q路编码信息。
在一种可选的方案中，如图10所示，发送端可以在OvTDM编码之前加入预编码过程，可以使用纠错码进行预编码。在另一种可选的方案中，如图11所示，发送端可以在OvTDM编码之前加入预编码过程，例如，加入FEC编码过程，将输入信息流经过交织器，通过FEC编码和OvTDM编码，形成I、Q两路数据传输。在又一种可选的方案中，如图12所示，发送端可以在OvTDM系统之前加入预编码过程，例如，加入FEC编码过程，将输入信息进行预编码后，将预编码后的信息流分为两路，其中一路信息流通过交织器，分别进行OvTDM编码后，形成I、Q两路数据传输。发送端在对输入信息进行重叠复用编码和纠错码编码所得到的编码信息之后，可以将编码信息通过信道传输给接收端。
步骤S104，根据重叠复用译码算法，对编码信息进行译码，得到第一译码结果。
具体地，上述的重叠复用译码算法可以是OvXDM译码算法，在本发明实施例中，以OvTDM系统为例进行详细说明，由于OvTDM系统与纠错码相结合译码，因此需要OvTDM译码的输出结果为软值，常用的译码算法有BCJR算法、long-MAP算法等。
步骤S106，根据纠错码译码算法，对第一译码结果进行纠错处理，得到第二译码结果。
具体地，上述的纠错码译码算法可以是前向纠错码FEC(Forward Error Correction)译码算法，FEC是增加数据通讯可信度的方法，利用数据进行传输冗余信息的方法，当传输中出现错误，将允许接收器再建数据。常用的FEC译码方法有很多，包括软入软出的TPC和LDPC等方法，本发明实施例中以TPC码为例进行说明，可以先对接 收数据进行行译码，再进行列译码，彼此交换各自的软信息。
步骤S108，输出第二译码结果。
在一种可选的方案中，接收端在通过信道接收到发送端发送的编码信息之后，可以将OvTDM译码和纠错码译码相结合，先对编码信息进行OvTDM译码，得到第一译码结果，并将第一译码结果作为外信息进行纠错处理，将错误信息纠正为正确信息，即进行FEC译码，得到第二译码结果，并输出第二译码结果，其中，在理想状态下，第二译码结果与发送端的输入信息相同，但是由于译码方案性能的差异，输出的结果与输入信息存在偏差，也就是常说的误码。
通过本发明上述实施例，接收发送端输出的编码信息，根据重叠复用译码算法，对编码信息进行译码，得到第一译码结果，根据纠错码译码算法，对第一译码结果进行纠错处理，得到第二译码结果，输出第二译码结果。容易注意到的是，由于接收端将重叠复用译码和纠错码译码相结合，提高了信息流的纠错能力和可靠性，降低系统误码率，在高谱效率时较低的信噪比就可达到较低的误码率，并且可以引入两路传输数据来进一步提升重叠复用系统的可靠性，从而解决了现有技术中的重叠复用系统的纠错能力差，导政重叠复用系统可靠性低的技术问题。
可选地，在本发明上述实施例中，在步骤S108，输出第二译码结果之前，该方法包括：
步骤S110，判断第二译码结果是否满足预设条件。
具体地，上述的预设条件可以是根据重叠复用系统的复杂度和性能要求，设定的迭代条件，例如可以是第二译码结果满足收敛条件，也可以是迭代次数满足迭代要求。
步骤S112，如果第二译码结果满足预设条件，则输出第二译码结果。
在一种可选的方案中，如果当前迭代过程中译码得到的第二译码结果满足预设条件，则停止迭代过程，并输出第二译码结果。
步骤S114，如果第二译码结果不满足预设条件，则根据第二译码结果，得到反馈信息。
步骤S116，根据重叠复用译码算法，对编码信息和反馈信息进行译码，得到第三译码结果。
步骤S118，根据纠错码译码算法，对第三译码结果进行纠错处理，得到第四译码结果。
步骤S120，将第四译码结果作为第二译码结果，并返回执行步骤S110，判断第二 译码结果是否满足预设条件。
在一种可选的方案中，如果当前迭代过程中译码得到的第二译码结果不满足预设条件，则需要继续迭代过程，可以根据第二译码结果得到反馈信息，作为下一次迭代过程的输入，进行OvTDM译码，得到第三译码结果，并对第三译码结果进行纠错处理，即进行FEC译码，得到第四译码结果，并判断第四译码结果是否满足预设条件，如果满足，则停止迭代过程，并输出第四译码结果；如果不满足，则继续迭代，根据第四译码结果得到下一次迭代过程中的反馈信息。
例如，对于如图10所述的发送端结构框图，接收端结构框图可以如图13所示，接收端在接收到编码信息之后，可以将编码信息作为OvTDM译码器的输入，进行OvTDM译码，得到第一译码结果，将第一译码结果作为外信息，进行纠错处理，即输入FEC译码器，进行FEC译码，得到第二译码结果，如果第二译码结果不满足预设条件，则将第二译码结果作为外信息，即反馈信息，将反馈信息和编码信息作为OvTDM译码器的输入，重复上述译码过程，直至第二译码结果满足预设条件，输出第二译码结果。
可选地，在本发明上述实施例中，步骤S110，判断第二译码结果是否满足预设条件，包括：
步骤S1102，获取当前迭代次数。
步骤S1104，判断当前迭代次数是否超过预设迭代次数。
具体地，上述的预设迭代次数的选取和重叠次数K、信噪比等有关，当迭代次数过小时，系统的译码结果就不精确，误码率稍高；而当重叠次数较大时，由于运算量过大，其复杂度就较高。在本发明实施例中，选取预设迭代次数为60。
步骤S1106，如果当前迭代次数超过预设迭代次数，则确定第二译码结果满足预设条件。
步骤S1108，如果当前迭代次数小于预设迭代次数，则确定第二译码结果不满足预设条件。
在一种可选的方案中，在经过OvTDM译码和FEC译码之后，可以判断当前迭代次数是否到达预设迭代次数，如果到达，则停止迭代，并将本次迭代过程中译码得到的译码结果输出；如果未到达，则继续迭代，并根据本次迭代过程中译码得到的译码结果得到下一次迭代过程中的反馈信息。
可选地，在本发明上述实施例中，步骤S114，根据第二译码结果，得到反馈信息，包括：
步骤S1142，将第二译码结果作为反馈信息。
在一种可选的方案中，可以直接将本次译码得到的第二译码结果作为下一次迭代过程的输入，进行OvTDM译码。
可选地，在本发明上述实施例中，步骤S104，根据重叠复用译码算法，对编码信息进行译码，得到第一译码结果，包括：
步骤S1040，根据第一重叠复用译码算法，对第一编码信息进行译码，得到第五译码结果。
步骤S1041，根据第一纠错码译码算法，对第五译码结果进行纠错处理，得到第六译码结果。
步骤S1042，根据第一交织算法，对第六译码结果进行交织处理，得到第一交织结果。
具体地，交织是通信系统中进行数据处理而采用的一种技术，作用是使信道传输过程中所突发产生集中的错误最大限度的分散化，也就是将数据全部打乱，但又不改变数据内容，一般采用的交织算法包括不规则交织、随机交织、S交织、64*64阵列交织等，不同的交织方法对系统性能影响也不同，在本发明实施例中以第一交织算法为S交织或随机交织为例进行说明。
步骤S1043，根据第二重叠复用译码算法，对第二编码信息和第一交织结果进行译码，得到第一译码结果。
在一种可选的方案中，为了降低译码过程中的复杂度，可以将交织、FEC译码与OvTDM译码相结合，对于如图11所述的发送端结构框图，接收端结构框图可以如图14所示，接收端在接收到I路编码信息和Q路编码信息之后，可以将I路编码信息作为OvTDM译码器1的输入，进行第一次OvTDM译码，得到第五译码结果，将第五译码结果作为外信息，进行第一次纠错处理，即输入FEC译码器1，进行第一次FEC译码，得到第六译码结果，将第六译码结果作为外信息，输入交织器进行交织，得到第一交织结果，并将第一交织结果继续输入OvTDM译码器2进行第二次OvTDM译码，从而得到第一译码结果。
可选地，在本发明上述实施例中，步骤S106，根据纠错码译码算法，对第一译码结果进行纠正处理，得到第二译码结果，包括：
步骤S1062，根据第二纠错码译码算法，对第一译码结果进行纠错处理，得到第二译码结果。
在一种可选的方案中，如图14所示，可以将第一译码结果作为外信息，进行第二次纠错处理，即输入FEC译码器2，进行第二次FEC译码，得到第二译码结果。
可选地，在本发明上述实施例中，步骤S114，根据第二译码结果，得到反馈信息，包括：
步骤S1144，根据第一解交织算法，对第二译码结果进行解交织处理，得到反馈信息，其中，第一解交织算法为第一交织算法的逆算法。
在一种可选的方案中，如图14所示，如果第二译码结果不满足预设条件，则可以将第二译码结果输入解交织器，进行解交织处理，得到Q路编码信息的外信息，即反馈信息，其中解交织与交织互为逆过程。
需要说明的是，如图14所示，在第二次迭代之后，可以对I路编码信息和Q路编码信息的外信息，即反馈信息进行作为OvTDM译码器1的输入，重复上述译码过程，直到第二译码结果满足预设条件，停止迭代，并输出第二译码结果。
可选地，在本发明上述实施例中，步骤S104，根据重叠复用译码算法，对编码信息进行译码，得到第一译码结果，包括：
步骤S1044，根据第三重叠复用译码算法，对第一编码信息进行译码，得到第七译码结果。
步骤S1045，根据纠错码译码算法，对第七译码结果进行纠错处理，得到第八译码结果。
步骤S1046，根据第二交织算法，对第八译码结果进行交织处理，得到第二交织结果。
步骤S1047，根据第四重叠复用译码算法，对第二编码信息和第二交织结果进行译码，得到第九译码结果。
步骤S1048，根据第二解交织算法，对第九译码结果进行解交织处理，得到第一译码结果，其中，第二解交织算法为第二交织算法的逆算法。
在一种可选的方案中，为了降低译码过程中的复杂度，可以将交织、FEC译码与OvTDM译码相结合，对于如图12所述的发送端结构框图，接收端结构框图可以如图15所示，接收端在接收到I路编码信息和Q路编码信息之后，可以将I路编码信息作为OvTDM译码器1的输入，进行第一次OvTDM译码，得到第七译码结果，将第七译码结果作为外信息，进行第一次纠错处理，即输入FEC译码器，进行第一次FEC译码，得到第八译码结果，并将第八译码结果作为外信息，输入交织器进行交织，得 到第二交织结果，并将第二交织结果继续输入OvTDM译码器2进行第二次OvTDM译码，得到第九译码结果，然后进一步将第九译码结果作为外信息，输入解交织器进行解交织，从而得到第一译码结果。
需要说明的是，如图15所示，在得到第一译码结果之后，可以将第一译码结果再次输入FEC译码器，进行第二次纠错处理，即进行第二次FEC译码，得到第二译码结果，如果第二译码结果不满足预设条件，则可以将第二译码结果作为Q路编码信息的外信息，即反馈信息，并将反馈信息和I路编码信息输入OvTDM译码器1，重复上述译码过程，直到第二译码结果满足预设条件，停止迭代，并输出第二译码结果。
可选地，在本发明上述实施例中，在步骤S102，接收发送端输出的编码信息之后，该方法还包括：
步骤S122，对编码信息进行预处理，得到处理后的编码信息。
在一种可选的方案中，接收端通过天线收到编码信息之后，可以首先对编码信息进行预处理，可以包括同步、信道估计、均衡等操作，得到处理后的编码信息，然后对处理后的编码信息进行OvTDM译码和FEC译码。
下面结合图13对本发明一种优选的实施例进行详细说明，如图13所示，假设输入信息序列为X，长度为N＝100，重叠复用次数K＝5，以切比雪夫窗为复用波形，以TPC码为纠错码。发送端首先将输入信息X经过TPC预编码，然后进入OvTDM系统编码，将编码后的信号经过天线发射出去。信号经过信道传输，接收端通过天线收到信号Y，首先对其进行一系列处理，包括同步、信道估计、均衡等操作后得到信号Y′，然后对Y′进行译码，其译码步骤如下：(1)设置迭代次数Item；(2)将Y′作为OvTDM译码器的输入信息，进行OvTDM译码，得到第一译码结果；(3)将(2)中得到的第一译码结果作为外信息，进行FEC译码，得到第二译码结果；(4)将(3)中得到的第二译码结果作为OvTDM译码器的输入信息，重复以上步骤(2)～(3)直至满足一定条件或到达迭代次数，则停止迭代；(5)输出译码结果X。
下面结合图14对本发明另一种优选的实施例进行详细说明，如图14所示，假设输入信息序列为X，长度为N＝100，重叠复用次数K＝5，以切比雪夫窗为复用波形，以TPC码为纠错码。发送端首先将输入信息X经过TPC预编码，然后进入OvTDM系统编码，将编码后的信号经过天线发射出去。信号经过信道传输，接收端通过天线收到信号Y，首先对其进行一系列处理，包括同步、信道估计、均衡等操作后得到信号Y′，然后对Y′进行译码，其中，Y′包括I路数据和Q路数据，其译码步骤如下：(1)设置迭代次数Item；(2)将I路数据作为OvTDM译码器1的输入信息，进行第一次OvTDM译码，得到第五译码结果；(3)将(2)中得到的第五译码结果作为外信息， 输入FEC译码器1，进行第一次FEC译码，得到第六译码结果；(4)将(3)中得到的第六译码结果作为外信息，输入交织器进行交织，得到第一交织结果；(5)将(4)中得到的第一交织结果，继续输入OvTDM译码器2进行第二次OvTDM译码操作，同时将Q路数据也输入OvTDM系统译码器2进行OvTDM译码，得到第一译码结果；(6)将(5)中得到的第一译码结果作为外信息，输入FEC译码器2进行第二次FEC译码，得到第二译码结果；(7)将(6)中得到的第二译码结果，进行解交织，得到第一解交织结果；(8)将(7)中得到的第一解交织结果作为OvTDM译码器1的输入信息，重复以上步骤(2)～(7)，直至满足一定条件或到达迭代次数，则停止迭代；(9)输出译码结果X。
下面结合图15对本发明又一种优选的实施例进行详细说明，如图15所示，假设输入信息序列为X，长度为N＝100，重叠复用次数K＝5，以切比雪夫窗为复用波形，以TPC码为纠错码。发送端首先将输入信息X经过TPC预编码，然后进入OvTDM系统编码，将编码后的信号经过天线发射出去。信号经过信道传输，接收端通过天线收到信号Y，首先对其进行一系列处理，包括同步、信道估计、均衡等操作后得到信号Y′，然后对Y′进行译码，其中，Y′包括I路数据和Q路数据，其译码步骤如下：(1)设置迭代次数Item；(2)将I路数据作为OvTDM译码器1的输入信息，进行第一次OvTDM译码，得到第七译码结果；(3)将(2)中得到的第七译码结果作为外信息，输入FEC译码器，进行第一次FEC译码，得到第八译码结果；(4)将(3)中得到的第八译码结果作为外信息，输入交织器进行交织，得到第二交织结果；(5)将(4)中得到的第二交织结果，继续输入OvTDM译码器2进行第二次OvTDM译码，同时将Q路数据也输入OvTDM系统译码器2进行OvTDM译码操作，得到第九译码结果；(6)将(5)中得到的第九译码结果，进行解交织，得到第二解交织结果；(7)将(6)中得到的第二解交织结果作为外信息，输入FEC译码器进行第二次FEC译码，得到第二译码结果；(8)将(7)中得到的第二译码结果作为(2)的输入，重复以上步骤(2)～(7)，直至满足一定条件或到达迭代次数，则停止迭代；(9)输出译码结果X。
通过上述实施例，采用FEC译码和OvTDM译码相结合，不仅提高了重叠复用系统的纠错能力，同时也较低了重叠复用系统的误码率，增强了重叠复用系统的可靠性，在高谱效率时较低的信噪比就可达到较低的误码率，并且由于系统引入I、Q两路传输数据，因此重叠复用系统的可靠性也得到提升。
此处需要说明的是，本发明上述实施例中的发送端结构框图和接收端结构框图较为灵活，发送端也可以采用如图16所示的结构，对应的接收端可以采用如图17和图18所述的结构，两个结构均可以实现译码功能，但其结果不限定于此。
此处还需要说明的是，本发明上述实施例不仅可以应用在OvXDM系统中，也可 广泛应用于实际移动通信系统中，如TD-LTE、TD-SCDMA等系统，也可广泛应用于卫星通信、微波视距通信、散射通信、大气层光通信、红外通信与水生通信等任何无线通信系统中。既可以应用于大容量无线传输，也可以应用于小容量的轻型无线电系统。
实施例2
根据本发明实施例，提供了一种重叠复用系统的处理装置的实施例。
图19是根据本发明实施例的一种重叠复用系统的处理装置的示意图，如图19所示，该装置包括：
接收模块191，用于接收发送端输出的编码信息，其中，编码信息为对输入信息进行纠错码编码和重叠复用编码所得到的信息。
具体地，上述的重叠复用编码可以是OvXDM编码，在本发明实施例中，以OvTDM系统为例进行详细说明，OvTDM系统发射信号框图如图2所示，具体步骤如下：(1)首先设计生成发送信号的包络波形h(t)；(2)将(1)中所设计的包络波形h(t)经特定时间移位后，形成其它各个时刻发送信号包络波形h(t-i×ΔT)；(3)将所要发送的符号x i与(2)生成的相应时刻的包络波形h(t-i×ΔT)相乘，得到各个时刻的待发送信号波形x ih(t-i×ΔT)；(4)将(3)所形成的各个待发送波形进行x ih(t-i×ΔT)叠加，形成发射信号波形；(5)发送的信号可以表示为：
Figure PCTCN2018079724-appb-000004
其中，发送符号
Figure PCTCN2018079724-appb-000005
对应1中的输入数据序列P i。OvTDM接收信号框图如图3所示，K路波形复用如图4所示，OvTDM系统输入输出关系图如图5所示，节点状态转移图如图6所示，OvTDM系统Trellis图(格状图)如图7所示，发送端将编码调制后的信号通过天线发射出去，信号在无线信道中传输，接收端首先对接收信号进行预处理，然后对接收信号进行匹配滤波，再对信号分别进行抽样、译码，最终判决输出比特流。具体步骤如下：(1)首先对接收信号进行同步，包括载波同步、帧同步、符号时间同步等；(2)根据取样定理，对每一帧内的接收信号进行数字化处理；(3)对接收到的波形按照波形发送时间间隔切割，即对信号进行抽样；(4)按照一定的译码算法对切割后的波形进行译码。
具体地，上述的纠错码编码可以是使用纠错码的预编码，预编码的作用是对输入比特流进行初步编码，预编码能够提高信息流的纠错能力，降低系统误码率，提供较高的码率，同时增强信息比特流的可靠性，预编码的方法有多种，包括卷积码、Turbo码、Turbo乘积码(Turbo Product Code，TPC码)等，在本发明实施例中以TPC码为例说明预编码过程。TPC码属于Turbo码的一类，TPC编码实际上是一种阵列Turbo 编码，包含行和列两个分量编码器，构成二维TPC码。其分量码可以是卷积码，也可以是简单的分组码，如汉明码、BCH码、甚至是奇偶校验码。TPC的编码阵列也可以进一步扩充到三维或更多，比如在二维行列编码的基础上再添加对角线编码，将矩阵再扩充一行或一列校验位信息，如图8所示。TPC编码过程主要分为三步：(1)先将信息比特放置在一个K C *K R矩阵中；(2)将每行的K C个比特编码成长度为N C的码字；(3)将每列K R个比特编码成N R的码字；(4)将编码成的N C *N R码字矩阵按列输出，完成编码过程，TPC编码的码率为
Figure PCTCN2018079724-appb-000006
TPC编码具有很强的灵活性，由于TPC码的最小汉明距离等于分量码和最小汉明距离之积，因此TPC码采用简单的汉明码就可以获得优异的性能。比如分量码采用仅可以纠正一个错误的扩展(64，57)汉明码就可以构造出性能可以和Turbo码相比的TPC(64，57)码，该类编码不仅具有优异的纠错性能，而且具有较高的码率。
可选地，在本发明上述实施例中，上述的编码信息包括：第一编码信息和第二编码信息，其中，第一编码信息和第二编码信息的符号长度相同。
具体地，上述的第一编码信息可以是I路编码信息，上述的第二编码信息可以是Q路编码信息。
第一译码模块193，用于根据重叠复用译码算法，对编码信息进行译码，得到第一译码结果。
具体地，上述的重叠复用译码算法可以是OvXDM译码算法，在本发明实施例中，以OvTDM系统为例进行详细说明，由于OvTDM系统与纠错码相结合译码，因此需要OvTDM译码的输出结果为软值，常用的译码算法有BCJR算法、long-MAP算法等。
第二译码模块195，用于根据纠错码译码算法，对第一译码结果进行纠错处理，得到第二译码结果。
具体地，上述的纠错码译码算法可以是前向纠错码FEC(Forward Error Correction)译码算法，FEC是增加数据通讯可信度的方法，利用数据进行传输冗余信息的方法，当传输中出现错误，将允许接收器再建数据。常用的FEC译码方法有很多，包括软入软出的TPC和LDPC等方法，本发明实施例中以TPC码为例进行说明，可以先对接收数据进行行译码，再进行列译码，彼此交换各自的软信息。
输出模块197，用于输出第二译码结果。
通过本发明上述实施例，接收发送端输出的编码信息，根据重叠复用译码算法，对编码信息进行译码，得到第一译码结果，根据纠错码译码算法，对第一译码结果进 行纠错处理，得到第二译码结果，输出第二译码结果。容易注意到的是，由于接收端将重叠复用译码和纠错码译码相结合，提高了信息流的纠错能力和可靠性，降低系统误码率，在高谱效率时较低的信噪比就可达到较低的误码率，并且可以引入两路传输数据来进一步提升重叠复用系统的可靠性，从而解决了现有技术中的重叠复用系统的纠错能力差，导致重叠复用系统可靠性低的技术问题。
可选地，在本发明上述实施例中，该装置还包括：判断模块，用于判断第二译码结果是否满足预设条件；输出模块197还用于如果第二译码结果满足预设条件，则输出第二译码结果；第一处理模块，用于如果第二译码结果不满足预设条件，则根据第二译码结果，得到反馈信息；第三译码模块，用于根据重叠复用译码算法，对编码信息和反馈信息进行译码，得到第三译码结果；第四译码模块，用于根据纠错码译码算法，对第三译码结果进行纠错处理，得到第四译码结果；第二处理模块，用于将第四译码结果作为第二译码结果，并返回执行判断模块的功能。
可选地，在本发明上述实施例中，判断模块包括：获取子模块，用于获取当前迭代次数；判断子模块，用于判断当前迭代次数是否超过预设迭代次数；第一确定子模块，用于如果当前迭代次数超过预设迭代次数，则确定第二译码结果满足预设条件；第二确定子模块，用于如果当前迭代次数小于预设迭代次数，则确定第二译码结果不满足预设条件。
可选地，在本发明上述实施例中，第一处理模块还用于将第二译码结果作为反馈信息。
可选地，在本发明上述实施例中，第一译码模块193包括：第一译码子模块，用于根据第一重叠复用译码算法，对第一编码信息进行译码，得到第五译码结果；第二译码子模块，用于根据第一纠错码译码算法，对第五译码结果进行纠错处理，得到第六译码结果；第一交织子模块，用于根据第一交织算法，对第六译码结果进行交织处理，得到第一交织结果；第三译码子模块，用于根据第二重叠复用译码算法，对第二编码信息和第一交织结果进行译码，得到第一译码结果。
可选地，在本发明上述实施例中，第二译码模块195还用于根据第二纠错码译码算法，对第一译码结果进行纠错处理，得到第二译码结果。
可选地，在本发明上述实施例中，第一处理模块包括：第一解交织子模块，用于根据第一解交织算法，对第二译码结果进行解交织处理，得到反馈信息，其中，第一解交织算法为第一交织算法的逆算法。
可选地，在本发明上述实施例中，第一译码模块193包括：第四译码子模块，用于根据第三重叠复用译码算法，对第一编码信息进行译码，得到第七译码结果；第五 译码子模块，用于根据纠错码译码算法，对第七译码结果进行纠错处理，得到第八译码结果；第二交织子模块，用于根据第二交织算法，对第八译码结果进行交织处理，得到第二交织结果；第六译码子模块，用于根据第四重叠复用译码算法，对第二编码信息和第二交织结果进行译码，得到第九译码结果；第二解交织子模块，用于根据第二解交织算法，对第九译码结果进行解交织处理，得到第一译码结果，其中，第二解交织算法为第二交织算法的逆算法。
可选地，在本发明上述实施例中，该装置还包括：第三处理模块，用于对编码信息进行预处理，得到处理后的编码信息。
需要说明的是，本实施例中的优选实施方式可以参见实施例1中的相关描述，此处不再赘述。
实施例3
根据本发明实施例，提供了一种重叠复用系统的处理系统的实施例。
图20是根据本发明实施例的一种重叠复用系统的处理系统的示意图，如图20所示，该系统包括：
发送端201，用于输出编码信息，其中，编码信息为对输入信息进行纠错码编码和重叠复用编码所得到的信息。
具体地，上述的重叠复用编码可以是OvXDM编码，在本发明实施例中，以OvTDM系统为例进行详细说明，OvTDM系统发射信号框图如图2所示，具体步骤如下：(1)首先设计生成发送信号的包络波形h(t)；(2)将(1)中所设计的包络波形h(t)经特定时间移位后，形成其它各个时刻发送信号包络波形h(t-i×ΔT)；(3)将所要发送的符号x i与(2)生成的相应时刻的包络波形h(t-i×ΔT)相乘，得到各个时刻的待发送信号波形x ih(t-i×ΔT)；(4)将(3)所形成的各个待发送波形进行x ih(t-i×ΔT)叠加，形成发射信号波形；(5)发送的信号可以表示为：
Figure PCTCN2018079724-appb-000007
其中，发送符号
Figure PCTCN2018079724-appb-000008
对应1中的输入数据序列P i。OvTDM接收信号框图如图3所示，K路波形复用如图4所示，OvTDM系统输入输出关系图如图5所示，节点状态转移图如图6所示，OvTDM系统Trellis图(格状图)如图7所示，发送端将编码调制后的信号通过天线发射出去，信号在无线信道中传输，接收端首先对接收信号进行预处理，然后对接收信号进行匹配滤波，再对信号分别进行抽样、译码，最终判决输出比特流。具体步骤如下：(1)首先对接收信号进行同步，包括载波同步、帧同步、符号时间同步等；(2)根据取样定理，对每一帧内的接收信号进行数字化处理；(3)对接收到的波 形按照波形发送时间间隔切割，即对信号进行抽样；(4)按照一定的译码算法对切割后的波形进行译码。
具体地，上述的纠错码编码可以是使用纠错码的预编码，预编码的作用是对输入比特流进行初步编码，预编码能够提高信息流的纠错能力，降低系统误码率，提供较高的码率，同时增强信息比特流的可靠性，预编码的方法有多种，包括卷积码、Turbo码、Turbo乘积码(Turbo Product Code，TPC码)等，在本发明实施例中以TPC码为例说明预编码过程。TPC码属于Turbo码的一类，TPC编码实际上是一种阵列Turbo编码，包含行和列两个分量编码器，构成二维TPC码。其分量码可以是卷积码，也可以是简单的分组码，如汉明码、BCH码、甚至是奇偶校验码。TPC的编码阵列也可以进一步扩充到三维或更多，比如在二维行列编码的基础上再添加对角线编码，将矩阵再扩充一行或一列校验位信息，如图8所示。TPC编码过程主要分为三步：(1)先将信息比特放置在一个K C *K R矩阵中；(2)将每行的K C个比特编码成长度为N C的码字；(3)将每列K R个比特编码成N R的码字；(4)将编码成的N C *N R码字矩阵按列输出，完成编码过程，TPC编码的码率为
Figure PCTCN2018079724-appb-000009
TPC编码具有很强的灵活性，由于TPC码的最小汉明距离等于分量码和最小汉明距离之积，因此TPC码采用简单的汉明码就可以获得优异的性能。比如分量码采用仅可以纠正一个错误的扩展(64，57)汉明码就可以构造出性能可以和Turbo码相比的TPC(64，57)码，该类编码不仅具有优异的纠错性能，而且具有较高的码率。
可选地，在本发明上述实施例中，上述的编码信息包括：第一编码信息和第二编码信息，其中，第一编码信息和第二编码信息的符号长度相同。
具体地，上述的第一编码信息可以是I路编码信息，上述的第二编码信息可以是Q路编码信息。
接收端203，与发送端具有通信关系，用于根据重叠复用译码算法，对编码信息进行译码，得到第一译码结果，根据纠错码译码算法，对第一译码结果进行纠错处理，得到第二译码结果，并输出第二译码结果。
具体地，上述的重叠复用译码算法可以是OvXDM译码算法，在本发明实施例中，以OvTDM系统为例进行详细说明，由于OvTDM系统与纠错码相结合译码，因此需要OvTDM译码的输出结果为软值，常用的译码算法有BCJR算法、long-MAP算法等。上述的纠错码译码算法可以是前向纠错码FEC(Forward Error Correction)译码算法，FEC是增加数据通讯可信度的方法，利用数据进行传输冗余信息的方法，当传输中出现错误，将允许接收器再建数据。常用的FEC译码方法有很多，包括软入软出的TPC和LDPC等方法，本发明实施例中以TPC码为例进行说明，可以先对接收数据进行行 译码，再进行列译码，彼此交换各自的软信息。
通过本发明上述实施例，接收发送端输出的编码信息，根据重叠复用译码算法，对编码信息进行译码，得到第一译码结果，根据纠错码译码算法，对第一译码结果进行纠错处理，得到第二译码结果，输出第二译码结果。容易注意到的是，由于接收端将重叠复用译码和纠错码译码相结合，提高了信息流的纠错能力和可靠性，降低系统误码率，在高谱效率时较低的信噪比就可达到较低的误码率，并且可以引入两路传输数据来进一步提升重叠复用系统的可靠性，从而解决了现有技术中的重叠复用系统的纠错能力差，导政重叠复用系统可靠性低的技术问题。
可选地，在本发明上述实施例中，接收端还用于判断第二译码结果是否满足预设条件，如果第二译码结果满足预设条件，则输出第二译码结果，如果第二译码结果不满足预设条件，则根据第二译码结果，得到反馈信息，根据重叠复用译码算法，对编码信息和反馈信息进行译码，得到第三译码结果，根据纠错码译码算法，对第三译码结果进行纠错处理，得到第四译码结果，并将第四译码结果作为第二译码结果，并返回执行判断第二译码结果是否满足预设条件的步骤。
可选地，在本发明上述实施例中，接收端还用于获取当前迭代次数，判断当前迭代次数是否超过预设迭代次数，如果当前迭代次数超过预设迭代次数，则确定第二译码结果满足预设条件，如果当前迭代次数小于预设迭代次数，则确定第二译码结果不满足预设条件。
可选地，在本发明上述实施例中，接收端还用于将第二译码结果作为反馈信息。
可选地，在本发明上述实施例中，接收端还用于根据第一重叠复用译码算法，对第一编码信息进行译码，得到第五译码结果，根据第一纠错码译码算法，对第五译码结果进行纠错处理，得到第六译码结果，根据第一交织算法，对第六译码结果进行交织处理，得到第一交织结果，并根据第二重叠复用译码算法，对第二编码信息和第一交织结果进行译码，得到第一译码结果。
可选地，在本发明上述实施例中，接收端还用于根据第二纠错码译码算法，对第一译码结果进行纠错处理，得到第二译码结果。
可选地，在本发明上述实施例中，接收端还用于根据第一解交织算法，对第二译码结果进行解交织处理，得到反馈信息，其中，第一解交织算法为第一交织算法的逆算法。
可选地，在本发明上述实施例中，接收端还用于根据第三重叠复用译码算法，对第一编码信息进行译码，得到第七译码结果，根据纠错码译码算法，对第七译码结果进行纠错处理，得到第八译码结果，根据第二交织算法，对第八译码结果进行交织处 理，得到第二交织结果，根据第四重叠复用译码算法，对第二编码信息和第二交织结果进行译码，得到第九译码结果，根据第二解交织算法，对第九译码结果进行解交织处理，得到第一译码结果，其中，第二解交织算法为第二交织算法的逆算法。
可选地，在本发明上述实施例中，接收端还用于对编码信息进行预处理，得到处理后的编码信息。
需要说明的是，本实施例中的优选实施方式可以参见实施例1中的相关描述，此处不再赘述。
实施例4
根据本发明实施例，提供了一种存储介质，存储介质包括存储的程序，其中，在程序运行时控制存储介质所在设备执行上述实施例1中任意一项的重叠复用系统的处理方法。
通过本发明上述实施例，接收发送端输出的编码信息，根据重叠复用译码算法，对编码信息进行译码，得到第一译码结果，根据纠错码译码算法，对第一译码结果进行纠错处理，得到第二译码结果，输出第二译码结果。容易注意到的是，由于接收端将重叠复用译码和纠错码译码相结合，提高了信息流的纠错能力和可靠性，降低系统误码率，在高谱效率时较低的信噪比就可达到较低的误码率，并且可以引入两路传输数据来进一步提升重叠复用系统的可靠性，从而解决了现有技术中的重叠复用系统的纠错能力差，导政重叠复用系统可靠性低的技术问题。
实施例5
根据本发明实施例，提供了一种处理器，其特征在于，所述处理器用于运行程序，其中，所述程序运行时执行实施例1中任意一项所述的重叠复用系统的处理方法。
通过本发明上述实施例，接收发送端输出的编码信息，根据重叠复用译码算法，对编码信息进行译码，得到第一译码结果，根据纠错码译码算法，对第一译码结果进行纠错处理，得到第二译码结果，输出第二译码结果。容易注意到的是，由于接收端将重叠复用译码和纠错码译码相结合，提高了信息流的纠错能力和可靠性，降低系统误码率，在高谱效率时较低的信噪比就可达到较低的误码率，并且可以引入两路传输数据来进一步提升重叠复用系统的可靠性，从而解决了现有技术中的重叠复用系统的纠错能力差，导致重叠复用系统可靠性低的技术问题。
实施例6
根据本发明实施例，提供了一种终端，包括：接收装置，用于接收发送端输出的编码信息，其中，编码信息为对输入信息进行纠错码编码和重叠复用编码所得到的信 息；存储介质，用于存储程序，其中，程序在运行时对于从接收装置输出的数据执行如下处理步骤：根据重叠复用译码算法，对编码信息进行译码，得到第一译码结果，根据纠错码译码算法，对第一译码结果进行纠错处理，得到第二译码结果，并输出第二译码结果。
具体地，上述的终端可以是接收端。
通过本发明上述实施例，接收发送端输出的编码信息，根据重叠复用译码算法，对编码信息进行译码，得到第一译码结果，根据纠错码译码算法，对第一译码结果进行纠错处理，得到第二译码结果，输出第二译码结果。容易注意到的是，由于接收端将重叠复用译码和纠错码译码相结合，提高了信息流的纠错能力和可靠性，降低系统误码率，在高谱效率时较低的信噪比就可达到较低的误码率，并且可以引入两路传输数据来进一步提升重叠复用系统的可靠性，从而解决了现有技术中的重叠复用系统的纠错能力差，导政重叠复用系统可靠性低的技术问题。
实施例7
根据本发明实施例，提供了一种终端，包括：接收装置，用于接收发送端输出的编码信息，其中，编码信息为对输入信息进行纠错码编码和重叠复用编码所得到的信息；处理器，处理器运行程序，其中，程序运行时对于从接收装置输出的数据执行如下处理步骤：根据重叠复用译码算法，对编码信息进行译码，得到第一译码结果，根据纠错码译码算法，对第一译码结果进行纠错处理，得到第二译码结果，并输出第二译码结果。
具体地，上述的终端可以是接收端。
通过本发明上述实施例，接收发送端输出的编码信息，根据重叠复用译码算法，对编码信息进行译码，得到第一译码结果，根据纠错码译码算法，对第一译码结果进行纠错处理，得到第二译码结果，输出第二译码结果。容易注意到的是，由于接收端将重叠复用译码和纠错码译码相结合，提高了信息流的纠错能力和可靠性，降低系统误码率，在高谱效率时较低的信噪比就可达到较低的误码率，并且可以引入两路传输数据来进一步提升重叠复用系统的可靠性，从而解决了现有技术中的重叠复用系统的纠错能力差，导致重叠复用系统可靠性低的技术问题。
上述本发明实施例序号仅仅为了描述，不代表实施例的优劣。
在本发明的上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。
在本申请所提供的几个实施例中，应该理解到，所揭露的技术内容，可通过其它 的方式实现。其中，以上所描述的装置实施例仅仅是示意性的，例如所述单元的划分，可以为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，单元或模块的间接耦合或通信连接，可以是电性或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可为个人计算机、服务器或者网络设备等)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、移动硬盘、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (16)

  1. 一种重叠复用系统的处理方法，其特征在于，包括：
    接收发送端输出的编码信息，其中，所述编码信息为对输入信息进行纠错码编码和重叠复用编码后所得到的信息；
    根据重叠复用译码算法，对所述编码信息进行译码，得到第一译码结果；
    根据纠错码译码算法，对所述第一译码结果进行纠错处理，得到第二译码结果；
    输出所述第二译码结果。
  2. 根据权利要求1所述的方法，其特征在于，在输出所述第二译码结果之前，所述方法包括：
    判断所述第二译码结果是否满足预设条件；
    如果所述第二译码结果满足所述预设条件，则输出所述第二译码结果；
    如果所述第二译码结果不满足所述预设条件，则根据所述第二译码结果，得到反馈信息；
    根据所述重叠复用译码算法，对所述编码信息和所述反馈信息进行译码，得到第三译码结果；
    根据所述纠错码译码算法，对所述第三译码结果进行纠错处理，得到第四译码结果；
    将所述第四译码结果作为所述第二译码结果，并返回执行判断所述第二译码结果是否满足预设条件的步骤。
  3. 根据权利要求2所述的方法，其特征在于，判断所述第二译码结果是否满足预设条件，包括：
    获取当前迭代次数；
    判断所述当前迭代次数是否超过预设迭代次数；
    如果所述当前迭代次数超过所述预设迭代次数，则确定所述第二译码结果满足所述预设条件；
    如果所述当前迭代次数小于所述预设迭代次数，则确定所述第二译码结果不满足所述预设条件。
  4. 根据权利要求2所述的方法，其特征在于，根据所述第二译码结果，得到反馈信息，包括：
    将所述第二译码结果作为所述反馈信息。
  5. 根据权利要求2所述的方法，其特征在于，所述编码信息包括：第一编码信息和第二编码信息，其中，所述第一编码信息和所述第二编码信息的符号长度相同。
  6. 根据权利要求5所述的方法，其特征在于，根据重叠复用译码算法，对所述编码信息进行译码，得到第一译码结果，包括：
    根据第一重叠复用译码算法，对所述第一编码信息进行译码，得到第五译码结果；
    根据第一纠错码译码算法，对所述第五译码结果进行纠错处理，得到第六译码结果；
    根据第一交织算法，对所述第六译码结果进行交织处理，得到第一交织结果；
    根据第二重叠复用译码算法，对所述第二编码信息和所述第一交织结果进行译码，得到所述第一译码结果。
  7. 根据权利要求6所述的方法，其特征在于，根据纠错码译码算法，对所述第一译码结果进行纠正处理，得到第二译码结果，包括：
    根据第二纠错码译码算法，对所述第一译码结果进行纠错处理，得到所述第二译码结果。
  8. 根据权利要求6所述的方法，其特征在于，根据所述第二译码结果，得到反馈信息，包括：
    根据第一解交织算法，对所述第二译码结果进行解交织处理，得到所述反馈信息，其中，所述第一解交织算法为所述第一交织算法的逆算法。
  9. 根据权利要求5所述的方法，其特征在于，根据重叠复用译码算法，对所述编码信息进行译码，得到第一译码结果，包括：
    根据第三重叠复用译码算法，对所述第一编码信息进行译码，得到第七译码结果；
    根据所述纠错码译码算法，对所述第七译码结果进行纠错处理，得到第八译码结果；
    根据第二交织算法，对所述第八译码结果进行交织处理，得到第二交织结果；
    根据第四重叠复用译码算法，对所述第二编码信息和所述第二交织结果进行译码，得到第九译码结果；
    根据第二解交织算法，对所述第九译码结果进行解交织处理，得到所述第一译码结果，其中，所述第二解交织算法为所述第二交织算法的逆算法。
  10. 根据权利要求1至9中任意一项所述的方法，其特征在于，在接收发送端输出的编码信息之后，所述方法还包括：
    对所述编码信息进行预处理，得到处理后的所述编码信息。
  11. 一种重叠复用系统的处理装置，其特征在于，包括：
    接收模块，用于接收发送端输出的编码信息，其中，所述编码信息为对输入信息进行纠错码编码和重叠复用编码所得到的信息；
    第一译码模块，用于根据重叠复用译码算法，对所述编码信息进行译码，得到第一译码结果；
    第二译码模块，用于根据纠错码译码算法，对所述第一译码结果进行纠错处理，得到第二译码结果；
    输出模块，用于输出所述第二译码结果。
  12. 一种重叠复用系统的处理系统，其特征在于，包括：
    发送端，用于输出编码信息，其中，所述编码信息为对输入信息进行纠错码编码和重叠复用编码所得到的信息；
    接收端，与所述发送端具有通信关系，用于根据重叠复用译码算法，对所述编码信息进行译码，得到第一译码结果，根据纠错码译码算法，对所述第一译码结果进行纠错处理，得到第二译码结果，并输出所述第二译码结果。
  13. 一种存储介质，其特征在于，所述存储介质包括存储的程序，其中，在所述程序运行时控制所述存储介质所在设备执行权利要求1至10中任意一项所述的重叠复用系统的处理方法。
  14. 一种处理器，其特征在于，所述处理器用于运行程序，其中，所述程序运行时执行权利要求1至10中任意一项所述的重叠复用系统的处理方法。
  15. 一种终端，其特征在于，包括：
    接收装置，用于接收发送端输出的编码信息，其中，所述编码信息为对输入信息进行纠错码编码和重叠复用编码所得到的信息；
    存储介质，用于存储程序，其中，所述程序在运行时对于从所述接收装置输出的数据执行如下处理步骤：根据重叠复用译码算法，对所述编码信息进行译码，得到第一译码结果，根据纠错码译码算法，对所述第一译码结果进行纠错处理，得到第二译码结果，并输出所述第二译码结果。
  16. 一种终端，其特征在于，包括：
    接收装置，用于接收发送端输出的编码信息，其中，所述编码信息为对输入信息进行纠错码编码和重叠复用编码所得到的信息；
    处理器，所述处理器运行程序，其中，所述程序运行时对于从所述接收装置输出的数据执行如下处理步骤：根据重叠复用译码算法，对所述编码信息进行译码，得到第一译码结果，根据纠错码译码算法，对所述第一译码结果进行纠错处理，得到第二译码结果，并输出所述第二译码结果。
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