Joint Design of QC-RA Codes and Performance Analysis of Coded Cooperation

Shunwai ZHANG; Yongfeng FU

doi:10.11999/JEIT190990

Volume 43 Issue 5

May 2021

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Shunwai ZHANG, Yongfeng FU. Joint Design of QC-RA Codes and Performance Analysis of Coded Cooperation[J]. Journal of Electronics & Information Technology, 2021, 43(5): 1298-1305. doi: 10.11999/JEIT190990

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Shunwai ZHANG, Yongfeng FU. Joint Design of QC-RA Codes and Performance Analysis of Coded Cooperation[J]. Journal of Electronics & Information Technology, 2021, 43(5): 1298-1305. doi: 10.11999/JEIT190990

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Joint Design of QC-RA Codes and Performance Analysis of Coded Cooperation

doi: 10.11999/JEIT190990

Shunwai ZHANG^,,
Yongfeng FU

College of Telecommunications and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003, China

Funds: The National Natural Science Foundation of China (61501256), The Natural Science Foundation of Jiangsu Higher Education Institutions (20KJB510034), The Natural Science Foundation of Jiangsu Province (BK20150857), The NUPTSF (NY219073)

Received Date: 2019-12-11
Rev Recd Date: 2020-11-18

Available Online: 2020-12-07

Publish Date: 2021-05-18

Abstract

Abstract

Repeat Accumulate (RA) code is a special kind of Low Density Parity Check (LDPC) code, which not only has the advantages of LDPC code, but also realizes differential encoding. To solve the problems of high encoding complexity and long encoding delay of LDPC-coded cooperative system, Quasi-Cyclic RA (QC-RA) code is introduced. Firstly, a joint parity check matrix corresponding to the QC-RA codes adopted by the sources and relays is deduced; Secondly, the joint check matrix is designed based on the Common Difference Construction (CDC) method, and it is proved that the joint check matrix designed by the CDC method does not have short cycles with girth-4 or girth-6. Theoretical analysis and simulation results show that the system achieves better Bit Error Rate (BER) performance than the corresponding point-to-point system under the same conditions. The simulation results also demonstrate that the multi-source multi-relay coded cooperation with CDC constructed QC-RA code can obtain higher coding gain than that with generally constructed QC-RA code or Z-type constructed QC-RA code.

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References(24)

References

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