Design of LDPC Codes for Binary-input Gaussian Interference Channels

被引：0
|
作者：
Zhao, Shancheng [1 ]
Ma, Xiao [1 ]
Bai, Baoming [2 ]
机构：
[1] Sun Yat Sen Univ, Dept ECE, Guangzhou 510006, Guangdong, Peoples R China
[2] Xidian Univ, State Key Lab ISN, Xian 710071, Peoples R China
来源：
2014 IEEE/CIC INTERNATIONAL CONFERENCE ON COMMUNICATIONS IN CHINA (ICCC) | 2014年
关键词：
LDPC codes; joint decoding algorithm; Gaussian interference channels; Tanner graph; multiuser systems; PARITY-CHECK CODES; DECODING ALGORITHMS; RELAY SYSTEM; CAPACITY; MODULATION;
D O I：
暂无
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
Due to the existence of multiuser interference, codes optimized for point-to-point links may be unsuitable for multiuser networks. In this paper, we are concerned with the design of lowdensity parity-check (LDPC) codes for binary-input Gaussian interference channels (GIFC). We utilize a Monte-Carlo approach based on the downhill-simplex algorithm to obtain good LDPC degree distributions for GIFC. Simulation results show that the constructed codes perform better than codes optimized only for point-to-point links. For symmetric GIFC with coefficient h(2) = 0.75, coding gain about 0.6 dB is obtained. These results indicate that, as opposed to using off-the-shell codes designed for point-topoint links, new codes should be designed in multiuser networks.
引用
收藏
页码：70 / 74
页数：5
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