调制方式及协作门限对增强中继协作性能影响的分析

由于不需要配置多根天线就可以构成虚拟天线阵列,协作分集技术被广泛地讨论。传统的协作分集没有充分地利用信道的资源,中继节点不管信道状态是否优良,每次直接转发源节点传来的信号。增强中继通过限制中继节点只在信道状态差的情况才进行协作,节约了信道的资源。本篇文章在独立非同分布瑞利信道下,研究了调制方式及协作门限值对于增强中继协作分集性能的影响。中继节点的协作方式选择放大重传模式。经过理论推导,得到了各种调制方式在增强中继协作策略下系统整体的信噪比与误码率的关系式。并且文章讨论了门限对于增强中继的影响。

Performance Analysis of Incremental Relaying Cooperative Diversity with Different Modulations and Thresholds

Cooperative diversity technique has been widely discussed as a way to form virtual arrays without using multiple antennas.Traditional cooperative diversity doesn't fully apply the channel resources because the relays forward the signal which comes from the source to the destination every time regardless of the channel conditions.However,the IR(incremental relaying) cooperative diversity use the cooperative links only when the channel condition of direct link is bad.Thus,it can save the channel resources.In ...