一种AF-MIMO中继系统中的混合协作方案

为了提升协作通信系统中放大转发方案的系统性能,提出了一种新的基于选择中继的混合协作方案.中继节点根据正确解码与否被分为两个集合P和Q,系统分别从两个集合中挑选在目的节点处具有最高信噪比的中继节点进行放大转发.推导出了新方案信道容量的闭式表达式.仿真结果表明,新方案的误码率性能和信道容量均优于传统的基于选择中继的放大转发方案.

Hybrid cooperation scheme for the AF-MIMO relaying system

A hybrid relay selection scheme based on amplify-and-forward(AF) is proposed in the general cooperative communication network.In the proposed scheme,all the relays are divided into two groups,referred to as group P and group Q depending on whether they can perform decoding correctly or not.Both group P and group Q will select the relay which has the maximum signal-to-noise ratio at the destination.Simulation results show that the proposed relay selection scheme significantly outperforms the conventional AF selection scheme in terms of both bit error rate(BER) and channel capacity,and that these performance gains considerably grow as the transmission power of group P increases and antennas equipped on the nodes increases respectively.