Two-User Turbo Decoding with Simplified Sum Trellis in Two-Way Relay Channel

被引：0
|
作者：
Lu, Shan [1 ]
Cheng, Jun [1 ]
Li, Ying [2 ]
Watanabe, Yoichiro [1 ]
机构：
[1] Doshisha Univ, Dept Intelligent Informat Engn & Sci, Kyotanabe 6120321, Japan
[2] Xidian Univ, State Key Lab ISN, Xian, Peoples R China
来源：
IEICE TRANSACTIONS ON COMMUNICATIONS | 2013年 / E96B卷 / 01期
基金：
中国国家自然科学基金;
关键词：
two-way relay channel; physical-layer network coding; turbo decoding; sum trellis; AMPLIFY-AND-FORWARD; NETWORKS;
D O I：
10.1587/transcom.E96.B.73
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Physical-layer network coding with binary turbo coding in a two-way relay channel is considered. A two-user turbo decoding scheme is proposed with a simplified sum trellis. For two-user iterative decoding at a relay, the component decoder with its simplified sum trellis decodes the superimposed signal to the arithmetic sum of two users' messages. The simplified sum trellis is obtained by removing one of the states in a pair of mutual symmetrical states from a sum trellis. This removal reduces the decoding complexity to half of that with the sum trellis, and does not degrade decoding performance over AWGN channel since two output sequences from the pair of mutual symmetrical states are the same.
引用
收藏
页码：73 / 80
页数：8
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