Performance Analysis of Multi-node Cooperative MRC System with Minimum Routes
CHENG Wei-jun1,2, ZHU Bo-cheng2
1. School of Physics and Electronics Engineering,Central University of Nationalitics, Beijing 100081,China;2. Department of Electronics,Peking University,Beijing 100871,China
摘要 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.
Abstract：This paper proposes a multi-node cooperative Maximum Ratio Combining(MRC) system with minimum routes for multi-hop wireless networks.The regenerative outage performances of the mutual information for MRC cooperative system and the proposed system are analyzed over Nakagami fading channels.Their close-form expressions of the outage probability are derived using Moment Generating Function (MGF) approach.The theoretical analysis and simulation results show that MRC cooperative system can offer the full-route diversity,where the diversity order of the whole system equals to the minimal sum of the possible diversities of the full routes.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.
2007, Vol. 35 
