A low complexity detection/decoding algorithm for NB-LDPC coded PRCPM system

This paper studies the combination of non-binary low-density parity-check (NB-LDPC) codes and M-ary partial response continuous phase modulation (PRCPM). A low-complexity joint detection/decoding algorithm is proposed, which is referred to as the Max-Log-MAP/X-EMS algorithm. In this joint algorithm,...

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Bibliographic Details
Published in:Physical communication Vol. 17; pp. 165 - 171
Main Authors: Liu, Xiying, Zhao, Shancheng, Ma, Xiao
Format: Journal Article
Language:English
Published: Elsevier B.V 01.12.2015
Subjects:
[formula omitted]-EMS algorithms
BCJR algorithm
Iterative decoding
NB-LDPC codes
PRCPM
NB-LDPC codes
BCJR algorithm
PRCPM
X-EMS algorithms
Iterative decoding
ISSN:1874-4907, 1876-3219
Online Access:Get full text
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Summary:This paper studies the combination of non-binary low-density parity-check (NB-LDPC) codes and M-ary partial response continuous phase modulation (PRCPM). A low-complexity joint detection/decoding algorithm is proposed, which is referred to as the Max-Log-MAP/X-EMS algorithm. In this joint algorithm, the CPM detector is implemented by the Max-Log-MAP algorithm while the LDPC decoder is implemented by the extended min-sum (EMS) algorithms. Three kinds of EMS algorithms, including D-EMS, T-EMS, and M-EMS algorithms, are compared, which are referred to as X-EMS algorithm for convenience. Simulation results show that the Max-Log-MAP/X-EMS algorithm performs as well as the traditional iterative detection/decoding algorithm based on the BCJR algorithm and the q-ary sum–product algorithm, but with lower complexity. In addition, comparison of the proposed NB-LDPC coded PRCPM system with the eBCH coded PRCPM system is given, which shows the performance advantages of our system.
ISSN:1874-4907
1876-3219
DOI:10.1016/j.phycom.2015.08.011