基于C-ARQ的协作增益-重传概率-距离分析与动态协作研究

摘要

无线通信技术体系发展飞速,但难题依然不少,鉴于数据传输的共性,提出C-ARQ(协作自动请求重传)技术作为无线传输的一种方法.C-ARQ技术可充分利用多用户协作所带来的空间分集和出错重传所带来的时间分集和编码增益,建立了协作增益-重传概率-距离模型来分析.通过对数据传输的可靠性和有效性进行分析比较,直观地解释了C-ARQ相对与非协作在重传速率、吞吐率、延时各方面的优势,以及C-ARQ技术应用的最佳使用方式.%There still exist many problems in wireless communication technical system, although this system develops rapidly at present.In view of the generality of data transmission, C-ARQ (cooperative automatic repeat request retransmission) technology is proposed as a method of wireless transmission. C-ARQ technology can make full use of the time diversity and coding gain brought by spatial diversity and error retransmission in multi-user collaboration, and establish the cooperative gain retransmission probability-distance model for analysis. Analysis of data reliability and validity could intuitively explain the C-ARQ advantage relative to noncooperation in all aspects of the retransmission rate, throughput, delay, and the beat application mode of C-ARQ technology.