期刊
IEEE COMMUNICATIONS LETTERS
卷 25, 期 6, 页码 1776-1780出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LCOMM.2021.3057717
关键词
Convergence rate; layered decoding; protograph-based LDPC-Hadamard codes; ultimate Shannon limit
资金
- RGC of the Hong Kong SAR, China
- PolyU [152170/18E]
The authors present a layered decoding algorithm for PLDPC-HCs, which improves convergence rate and performance. At a specific bit error rate, the layered decoder with fewer decoding iterations shows comparable performance to the standard decoder.
In this letter, we propose a layered decoding algorithm for protograph-based low-density parity-check Hadamard codes (PLDPC-HCs), which have been shown to be ultimate-Shannon-limit approaching. Compared with the standard decoding algorithm, the layered decoding algorithm improves the convergence rate by about two times. At a bit error rate of 2.0 x 10(-5), the layered decoder using 20 decoding iterations shows a very small degradation of 0.03 dB compared with the standard decoder using 40 decoding iterations. Moreover, the layered decoder using 21 decoding iterations shows the same error performance as the standard decoder using 41 decoding iterations.
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