大规模天线下能量广播方法  

Energy Broadcasting Scheme with Massive Antennas

作　　者：赵龙[1] 赵慧[1] 郑侃[1] 

机构地区：[1]北京邮电大学泛网无线通信教育部重点实验室,北京100876

出　　处：《北京邮电大学学报》2016年第2期77-81,共5页Journal of Beijing University of Posts and Telecommunications

基　　金：中央高校基本科研业务费专项资金资助(2016RC12);国家高技术研究发展计划(863计划)项目(2015AA01A705);国家科技重大专项项目(2015ZX03002009-004);国家自然科学基金项目(61271183)

摘　　要：为了提高大规模天线能量广播系统的平均用户能量收获效用,在采用最大比传输预编码下,利用大规模天线的性质推导了单能量源场景的最优功率分配方案,利用小区间干扰提出了多能量源协作传输方法,并给出了协作能量传输的最优功率分配方案.仿真结果表明,在单能量源中,所提功率分配方案的性能好于等功率分配方案的性能,协作能量传输方案的性能优于非协作能量传输方案的性能.In order to improve the average user utility of energy harvesting in energy broadcasting system with massive antennas,the maximum ratio transmission precoder was employed. Considering the single energy source scenario,the optimal power allocation scheme is first derived with aid of advantage of the characteristics of massive antennas. To exploit the inter-cell interference,a cooperative energy transfer scheme was proposed in multiple energy sources scenario,and the optimal power allocation for cooperative energy transfer was deduced correspondingly. Simulations indicate that the performance with the optimal power allocation is better than that with equal power allocation in single energy source scenario,and the cooperative energy transfer outperforms the non-cooperative energy transfer in multiple energy sources scenario.

关 键 词：大规模天线 最大比传输 能量收获 协作能量传输 

分 类 号：TN911[电子电信—通信与信息系统]