双向中继系统的联合中继选择和功率分配策略  

Joint Relay Selection and Power Allocation Strategy of Two-way Relay System

作　　者：曹申好[1] 刘顺兰[1] 

机构地区：[1]杭州电子科技大学通信工程学院,杭州310018

出　　处：《计算机工程》2013年第7期127-132,共6页Computer Engineering

基　　金：2012年浙江省大学生创新活动计划基金资助项目

摘　　要：为提高双向中继系统的可达速率和,基于网络编码的双向中继系统模型,提出一种最大化可达速率和的联合中继选择与功率分配策略。给出最大化最小信道增益(MMCG)和最大化信道增益调和平均值的中继选择方案。在中继选择策略的基础上,给出一种基于双向中继系统可达速率和最大化准则的最优功率分配方案。仿真结果表明,与联合BRS中继选择功率分配方案相比,联合MMCG中继选择和最优功率分配方案系统可达速率约提高1.6 bit/s/Hz。In order to improve the sum-rate of two-way relay system, this paper proposes a joint relay selection and power allocation strategy based on in network coding two-way relay system model. A relay selection scheme of Maximized Minimum Channel Gain （MMCG） and Maximize Harmonic Average（MHA） is proposed. The optimal power allocation scheme between the sources and the relay in two-way relay system is proposed based on maximizing the sum rate of the system. Simulation results show that the proposed joint MMCG relay selection and the optimal allocation strategy can effectively improve 1.6 bit/s/Hz on the sum rate of system in two-way relay system with Physical-layer Network Coding（PNC） than joint BRS relay selection strategy.

关 键 词：双向中继系统 模拟网络编码 物理层网络编码 信道增益 中继选择 功率分配 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]