基于竞争策略和ARQ的增强型放大转发协议

doi:10.13190/j.jbupt.2013.06.006

北京邮电大学学报 ›› 2013, Vol. 36 ›› Issue (6): 27-31.doi: 10.13190/j.jbupt.2013.06.006

基于竞争策略和ARQ的增强型放大转发协议

吴皓威, 曹耘瑕, 李恩玉, 欧静兰, 杨士中

重庆大学通信与测控中心, 重庆 400030

收稿日期:2013-03-01 出版日期:2013-12-31 发布日期:2013-10-08
作者简介:吴皓威（1981—），男，副研究员，E-mail：wuhaowei@cqu.edu.cn.
基金资助:
重庆大学中央高校基本科研业务费项目（106112013CDJZR165502，CDJZR12160009）

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

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

摘要/Abstract

摘要：

为了提高增强型放大转发协同通信系统的性能，对协同中继协议进行了研究，提出了基于竞争策略和自动请求重传机制的增强型放大转发协议. 该协议在3节点协同通信系统的基础上通过目的节点的反馈信息对信道进行估计，当直传不成功时，利用源节点与中继节点的竞争来确定转发方式. 详细推导了该协议的中断概率闭式结果，给出了高信噪比时的中断概率近似表达，并在此基础上给出了分集复用折中和协同增益. 理论分析和数值仿真结果表明，所提出的放大转发协议选择最优的转发方式，能有效改善系统的中断性能.

关键词: 协同通信, 放大转发, 自动请求重传, 中断概率, 分集复用折中

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

中图分类号:

TN92

吴皓威, 曹耘瑕, 李恩玉, 欧静兰, 杨士中. 基于竞争策略和ARQ的增强型放大转发协议[J]. 北京邮电大学学报, 2013, 36(6): 27-31.

WU Hao-wei, CAO Yun-xia, LI En-yu, OU Jing-lan, YANG Shi-zhong. Incremental Amplify-and-Forward Protocol Based on Competition Scheme and ARQ[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2013, 36(6): 27-31.

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基于竞争策略和ARQ的增强型放大转发协议

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

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