适用于网络LDPC码的速率兼容算法

doi:10.3969/j.issn.1001-2400.2013.02.003

J4 ›› 2013, Vol. 40 ›› Issue (2): 13-17+47.doi: 10.3969/j.issn.1001-2400.2013.02.003

• Original Articles • Previous Articles Next Articles

Rate-compatible network LDPC codes

WANG Jingyi^1,2;LI Ying^1,2;SUN Yue^1,2

(1. State Key Lab. of Integrated Service Networks, Xidian Univ., Xi'an 710071， China;
2. State Key Lab. of Wireless Mobile Communications, China Academy of Telecommunication Technology, Beijing 100083， China)

Received:2012-06-09 Online:2013-04-20 Published:2013-05-22
Contact: WANG Jingyi E-mail:wangjy@stu.xidian.edu.cn

Abstract

Abstract:

A rate-compatible puncturing algorithm for network LDPC codes is proposed to achieve the minimum error probability, and decoding error probability is derived. The algorithm for finding variable nodes to be deleted based on the tanner graph of network LDPC codes is proposed, which is aimed at minimizing the decoding error probability and optimizing the puncturing pattern. Simulation results illustrate that, at BER=10^-4, the proposed rate-compatible network LDPC codes have a coding gain of about 0.4dB compared with the codes obtained via the existing punctured methods.

Key words: multi-access relay network, low-density parity-check(LDPC)codes, network LDPC code, rate-compatible, puncturing

WANG Jingyi;LI Ying;SUN Yue. Rate-compatible network LDPC codes[J].J4, 2013, 40(2): 13-17+47.

[1]	. The Design of Rate-Compatible Network LDPC Codes* [J]. J4, 2013, 40(2): 13-17.
[2]	ZHOU Lin;BAI Baoming;SHAO Junhu;LIN Wei. On nonbinary rate-compatible LDPC codes [J]. J4, 2011, 38(1): 147-152.
[3]	GUO Kai;CHEN Yan-hui;LI Jian-dong. Rate-compatible codes based on puncturing parity check bits in group [J]. J4, 2009, 36(5): 782-787.

Rate-compatible network LDPC codes

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