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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, PP. 27-31

Keywords: 协同通信,放大转发,自动请求重传,中断概率,分集复用折中

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Abstract:

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.

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