慢衰落信道环境下中继节点的优化选择方案

在协同通信技术中，中继节点的选择是一个重要的研究方向。在以往的文献中，只考虑了单径信道下的中继节点选择，而在实际情况下，通信信道是多径衰落的。为此，提出了一种多径慢衰落信道环境下的最优中继的选择方案。实验结果显示，利用此方案选出的最优中继节点往往不是传统的只考虑单径情况下所选出的最优中继节点。因此，所提出的方案更符合协同通信中的实际情况，并可在较大程度上提高系统的性能。

A selection scheme for optimal relay nodes under slowly fading channel environment

Selection of optimal relay node is an important problem in cooperative communications. In the previous literature, only single-path channel environments were considered, while in reality, communication channels are mostly multi-path fading channels. For this reason, it is proposed in this paper a selection scheme for optimal relay nodes under a multi-path fading channel environment. The experimental results demonstrate that the optimal relay nodes selected by this scheme are usually not the optimal relay nodes selected by the conventional methods, which only consider single-path. Thus, this scheme is more suitable for real environments and may significantly boost system performance.