Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2013, Vol. 36 ›› Issue (6): 27-31.doi: 10.13190/j.jbupt.2013.06.006

• Papers • Previous Articles     Next Articles

Incremental Amplify-and-Forward Protocol Based on Competition Scheme and ARQ

WU Hao-wei, CAO Yun-xia, LI En-yu, OU Jing-lan, YANG Shi-zhong   

  1. Center of Communication and Tracking Telemetering and Command, Chongqing University, Chongqing 400030, China
  • Received:2013-03-01 Online:2013-12-31 Published:2013-10-08

Abstract:

In order to improve the performance of incremental amplify-and-forward cooperative communication systems, a new protocol based on competition scheme and automatic repeat request was proposed, in which the channel state information was estimated by using the feedback transmitted by the destination. The forward manner was determined by the competition between the source node and relay node in case of direct transmission unsuccessfully. The closed-form expression for the outage probability of the proposed scheme was derived in detail. In high signal-to-noise ratio (SNR) regime, the approximation of outage probability was given as well. Meanwhile, based on approximation analysis in high SNR regime, the diversity-multiplexing tradeoff and cooperative diversity were obtained. Analysis and simulation show that the performance of the considered system can be improved effectively in terms of outage probability when applying the proposed strategy to select the optimal forward manner.

Key words: cooperative communications, amplify-and-forward, automatic repeat request, outage probability, diversity-multiplexing tradeoff

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