Jointly optimized quasi-cyclic LDPC codes for coded-cooperative wireless networks based on split labeling diversity

This manuscript proposes the quasi-cyclic low-density parity-check (QC-LDPC) coded-cooperative scheme based on the split labeling diversity (QC-LDPCC-SLD) with a single antenna over the Rayleigh frequency-flat fast fading channel. The two grith-4 cycle-free QC-LDPC codes are employed in the source a...

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Veröffentlicht in:Telecommunication systems Jg. 85; H. 3; S. 461 - 476
Hauptverfasser: Chen, Chen, Yang, Fengfan, Xu, Hongjun
Format: Journal Article
Sprache:Englisch
Veröffentlicht: New York Springer US 01.03.2024
Springer Nature B.V
Schlagworte:
Algorithms
Artificial Intelligence
Business and Management
Codes
Computer Communication Networks
Decoding
Error correcting codes
IT in Business
Iterative methods
Labeling
Low density parity check codes
Message passing
Phase shift keying
Probability Theory and Stochastic Processes
Quadrature amplitude modulation
Relay
Telecommunications systems
Wireless networks
Labeling diversity
Joint iterative decoding algorithm
Coded cooperation
QC-LDPC codes
ISSN:1018-4864, 1572-9451
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Zusammenfassung:This manuscript proposes the quasi-cyclic low-density parity-check (QC-LDPC) coded-cooperative scheme based on the split labeling diversity (QC-LDPCC-SLD) with a single antenna over the Rayleigh frequency-flat fast fading channel. The two grith-4 cycle-free QC-LDPC codes are employed in the source and relay, respectively. To cancel the cycles of length-4 in the cross-layer of the joint QC-LDPC codes obtained at the destination, a simple optimized approach is developed based on the bi-layer joint Tanner graph. In addition, 16-ary quadrature amplitude modulation (16-QAM) and 16-ary phase shift keying (16-PSK) are utilized in the proposed QC-LDPCC-SLD scheme, where the two distinct optimized labeling mappers of labeling diversity (LD) are split appropriately and equipped in the relay and source, respectively, therefore lowering the error-floor (EF) region. Moreover, the novel joint Turbo-Decoding Message-Passing iterative decoding algorithm is developed to further enhance the overall BER performance and reduce the decoding complexity. Theoretical analysis and numerical results demonstrate that the proposed QC-LDPCC-SLD scheme significantly outperforms the corresponding non-cooperative schemes by more than 3.4 dB and is closer to the EF bound at the high signal-to-noise rate. Moreover, the performance of the proposed QC-LDPCC-SLD scheme is improved by at least 16 % at a BER of the order of 10 - 5 compared to the existing QC-LDPC counterpart systems.
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ISSN:1018-4864
1572-9451
DOI:10.1007/s11235-024-01102-z