协作分集中基于延迟时间的伙伴选择

在协作分集中如何及时有效选取合作伙伴是重点研究问题之一,制定一个合理可靠的选择标准是解决此问题的关键。依据传输路径的时延特性,提出以中继延迟时间最小为标准来进行协作伙伴的选择。对此选择标准在分集增益、信噪比、传输误比特率性能上进行了仿真分析,表明以此标准选择协作伙伴能够获得较好的分集性能,降低误码率,并且能够避免目的节点处因同时接收中继节点信息而造成干扰阻塞,是一种可靠的伙伴选择协议。

Partner Selection in Cooperative Diversity Based on Delay Time

In cooperative diversity, how to select a partner timely and effectively is one of the key research issues, formulating a reasonable and reliable selection criterion is the key to solve this problem. Based on the time-delay characteristic of transmission path, this paper proposes to use minimum delay time among relay nodes as a criterion for partner selection. The simulation analysis of this criterion on diversity gain, SNR and transmission bit error rate performance shows that its use for partner selection can obtain a better diversity performance, lower bit error rate, avoid interference and blocking at the destination nodes due to receiving the information of relay nodes simultaneously, and it is a reliable partner selection agreement.