基于最小路由数的多节点合作MRC系统的性能分析

Performance Analysis of Multi-node Cooperative MRC System with Minimum Routes

提出了适用于多跳无线网络的基于最小路由数的多节点合作MRC(Maximum Ratio Combining)系统.在Nakagami衰落下研究了MRC合作方案和所提方案再生系统互信息的中断性能,运用矩生函数的方法推导了中断率的闭式解.仿真和理论分析表明MRC合作方案实现了全路由分集增益,其分集度为所有路由可能分集和的最小值,而所提合作系统实现了系统性能与目的节点的处理能力的良好折中,对降低目的节点接收机的信号处理功耗和复杂度很有好处.

This paper proposes a multi-node cooperative Maximum Ratio Combining（MRC） system with minimum mutes for multi-hop wireless networks. The regenerative outage performances of the mutual information for MRC cooperative system and the proposed system am analyzed over Nakagami fading channels. Their close- form expressions of the outage probability am derived using Moment Generating Function （MGF） approach. The theoretical analysis and simulation results show that MRC cooperative system can offer the full-mute diversity, where the diversity order of the whole system equals to the minimal sum of the possible diversities of the full mutes. And that the proposed system achieves a good tradeoff between the system performance and the processing capability of the destination node,and is very helpful to reduce the power consumption and the hardware complexity of the destination node.