TY - JOUR
T1 - Layered Decoding for Protograph-Based Low-Density Parity-Check Hadamard Codes
AU - Zhang, Peng W.
AU - Lau, Francis C.M.
AU - Sham, Chiu W.
N1 - Funding Information:
Manuscript received January 17, 2021; accepted February 4, 2021. Date of publication February 8, 2021; date of current version June 10, 2021. The work described in this letter was partially supported by a grant from the RGC of the Hong Kong SAR, China (Project No. PolyU 152170/18E). The associate editor coordinating the review of this letter and approving it for publication was M. A. C. Gomes. (Corresponding author: Francis C. M. Lau.) Peng W. Zhang and Francis C. M. Lau are with the Future Wireless Networks and IoT Focusing Area, Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Hong Kong (e-mail: [email protected]; [email protected]).
Publisher Copyright:
© 1997-2012 IEEE.
PY - 2021/6
Y1 - 2021/6
N2 - 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\times 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.
AB - 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\times 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.
KW - Convergence rate
KW - layered decoding
KW - protograph-based LDPC-Hadamard codes
KW - ultimate Shannon limit
UR - http://www.scopus.com/inward/record.url?scp=85100851045&partnerID=8YFLogxK
U2 - 10.1109/LCOMM.2021.3057717
DO - 10.1109/LCOMM.2021.3057717
M3 - Journal article
AN - SCOPUS:85100851045
SN - 1089-7798
VL - 25
SP - 1776
EP - 1780
JO - IEEE Communications Letters
JF - IEEE Communications Letters
IS - 6
M1 - 9349523
ER -