基于遗传算法的多基站协作通信功率分配方案  

Power Allocation Scheme Based on Genetic Algorithm for Multi-Base Station Cooperative Communication

作　　者：肖海林[1] 王鹏[1] 聂在平[2] 欧阳缮[1] 

机构地区：[1]桂林电子科技大学信息与通信学院,广西桂林541004 [2]电子科技大学电子工程学院,成都610054

出　　处：《电子科技大学学报》2014年第1期26-30,41,共6页Journal of University of Electronic Science and Technology of China

基　　金：国家973项目(2008CB317109);国家自然科学基金(61261018;61362007);广西自然科学基金重点项目(2011GXNSFD018028);广西科学基金(桂科自0991241);广西无线宽带通信与信号处理重点实验室2012年度主任基金(12111)

摘　　要：将多基站协作通信的功率分配问题转换为信干噪比(SINR)均衡问题。通过设置路径损耗门限为各用户判决与其通信的协作基站,并考虑用户间接收SINR的公平性,给出基于遗传算法的多基站协作通信功率分配方案。数值分析表明,相对于传统蜂窝小区等功率分配以及多基站协作通信等功率分配,该功率分配方案使系统中各用户的平均SINR分别提高17.75dB和2.36 dB。Multi-base station cooperative communication can efficiently reduce the inter-cell interference, but its power allocation is a non-convex optimization problem. In this paper, we formulate the power allocation as a signal-to-interference-plus-noise-ratio （SINR） balancing problem and propose a scheme to solve the problem in its equivalent form. Based on genetic algorithm, the proposed power allocation scheme sets the path loss threshold to select the cooperative base stations for each user and considers different users’ SINR fairness. Numerical results show that the proposed power allocation scheme will increase each user’s average SINR about 17.75dB and 2.36dB in the same conditions of adopting equal power allocation of traditional cellular system and equal power allocation of multi-base cooperative communication system, respectively.

关 键 词：协作通信 遗传算法 路径损耗门限 功率分配 信干噪比 

分 类 号：TN929.5[电子电信—通信与信息系统]