Cooperative diversity for wireless ad hoc networks

被引：53
|
作者：
Stankovic, Vladimir
Host-Madsen, Anders
Xiong, Zixiang
机构：
[1] Texas A&M Univ, Dept Elect & Comp Engn, College Stn, TX USA
[2] Univ Hawaii, Dept Elect Engn, Honolulu, HI 96822 USA
来源：
IEEE SIGNAL PROCESSING MAGAZINE | 2006年 / 23卷 / 05期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1109/MSP.2006.1708411
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：
Cooperative diversity is a novel technique to convey information in wireless ad hoc networks where closely located single-antenna network nodes cooperatively transmit and/or receive by forming virtual antenna arrays. It naturally arises in ad hoc networks as it enables great power savings with cheap, simple and mobile nodes while supporting decentralized routing and control algorithms. Cooperative diversity is largely based on relaying messages. The relay channel is a three-node channel where the source communicates to the destination with the help of an intermediate relay node. In receiver cooperation, two single-antenna receivers cooperate to facilitate decoding messages from two remote single-antenna transmitters. In transmitter cooperation, two single-antenna transmitters collaborate in communicating to two remote single-antenna receivers. Cooperative diversity does offer high additive rate gains when compared to the noncooperation case and the key in achieving these gains lies in coding with side information.
引用
收藏
页码：37 / 49
页数：13
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