Cooperative communications with relay selection in wireless sensor networks

Authors:
Li Sun;Taiyi Zhang;Long Lu;Hao Niu
Affiliations:
Dept. of Inf. & Commun. Eng., Xi'an Jiaotong Univ., Xi'an, China;-;-;-
Venue:
IEEE Transactions on Consumer Electronics
Year:
2009

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Abstract

Cooperative communications is a promising technology to improve the performance of wireless sensor networks. In this paper, we propose a novel relay selection scheme combined with feedback and adaptive forwarding in cooperative communication systems. A closed form expression for the tight lower bound of its outage probability is derived and a detailed analysis of its diversity-multiplexing-tradeoff (DMT) performance is presented. Simulation results demonstrate that our method outperforms a variety of existing relay selection schemes in terms of outage performance.