基于功率成本的中继系统最优功率分配  

Optimal Power Allocation Based on Power Cost in Relay System

作　　者：曲喜强[1,2,3] 许晓东[1,2] 李宏佳[1,2] 陶小峰[1,2] 田辉[1,2] 

机构地区：[1]泛网无线通信教育部重点实验室(北京邮电大学),北京100876 [2]北京邮电大学无线新技术研究所,北京100876 [3]中北大学信息与通信工程学院,太原030051

出　　处：《北京邮电大学学报》2010年第6期21-24,共4页Journal of Beijing University of Posts and Telecommunications

基　　金：国家自然科学基金项目(61001116);北京市科委项目(D08080100620802);国家科技重大专项项目(2009ZX03003-011-02);国家高技术研究发展计划重点项目(2009AA011506)

摘　　要：为了降低移动通信网络的功率成本,依据不同的供电方式所确定的不同功率价格,提出了以功率成本为约束条件,以最小中断概率为优化目标的中继系统最优功率分配方法.主要采用拉格朗日乘子法求解功率分配结果.仿真结果表明,当各节点功率价格不同时,基于功率成本的最优功率分配与不考虑功率价格的最优功率分配相比,在中断概率相同的条件下,功率成本较小;当各节点的功率价格相差较大时,对比效果更加明显.Different fas mobile communication hions of power supply have different power prices. In order to reduce power cost in network, an algorithm is proposed to minimize the outage probability based on power cost. It subjects to the constraint of power cost. The Lagrange multiplier maximization method is used to solve the problem. Simulation shows that whether dual-hop or multi-hop transmission, the power prices of different nodes are not the same, the optimal power allocation based on power cost has lower cost compare than the optimal power allocation in the case of uniform outage probability. Whereas, the former has lower outage probability in the case of uniform power cost. The contrast is more obvious with the gap of power prices enlarges.

关 键 词：功率分配 功率价格 功率成本 再生中继 中断概率 

分 类 号：TN929.53[电子电信—通信与信息系统]