重庆邮电大学学报（自然科学版）2017，Vol.29Issue(5)：649-656,8.DOI:10.3979/j.issn.1673-825X.2017.05.011
多天线FD-SWIPT中继信道下功率分裂和波束成形的联合优化
Joint optimization of power splitting and beamforming for multi-antenna FD-SWIPT relaying
摘要
Abstract
The algorithm is proposed to optimize the power splitting factor and beamforming matrix under multi-antenna FD-SWIPT relay channel.First of all,unlike the existing FD-SWIPT schemes,this paper considers the more complex multiantenna relay system model,and adopts power splitting(PS) protocol instead of the traditional time switching (TS) protocol,so that the information transfer and energy harvesting can be carried out at the same time.Secondly,we give a beamforming scheme based on the zero-forcing algorithm (ZF),and study the suboptimal solution of the system with low complexity.The use of beamforming technology enhances the ability of energy harvesting and loop self-interference suppression,so as to achieve larger throughput.Furthermore,the PS protocol is optimized,and the optimal PS factor is obtained by quadratic interpolation method.Finally,the suboptimal solution of the whole system is obtained.The simulation results show that the proposed joint optimization scheme can improve the maximum throughput of the system.In addition,the design of PS factor plays an important role in transient throughput,and they are related to the transmitted power.关键词
全双工中继/信息与能量同传/迫零算法/波束成形/功率分裂/时间切换Key words
full-duplex relay/simultaneous wireless information and power transfer/zero-forcing algorithm/beamforming power-splitting/time swltching分类
信息技术与安全科学引用本文复制引用
扶渝茜,谢显中,陈九九..多天线FD-SWIPT中继信道下功率分裂和波束成形的联合优化[J].重庆邮电大学学报（自然科学版）,2017,29(5):649-656,8.基金项目
国家自然科学基金(61271259,61601070) （61271259,61601070）
重庆市教委科学技术研究项目(KJ1600411) （KJ1600411）
重庆市基础与前沿研究计划项目(CSTC2016jcyjA0455)The National Nature Science Foundation of China (61271259,61601070) （CSTC2016jcyjA0455）
The Research Project of Chongqing Education Commission (KJ1600411) （KJ1600411）
The Chongqing Nature Science Foundation (CTSC2016jcyjA0455) （CTSC2016jcyjA0455）
