能量收集双向中继网络的高能效联合中继选择和功率分配算法  

Energy-Efficient Relay Selection and Power Allocation for Energy Harvesting Two-Way Relay Network

作　　者：丁长文[1,2] 杨霖[1,2] 李高祥[1] DING Chang-wen YANG Lin LI Gao-xiang(National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China, Chengdu , Sichuan 611731, China Science and Technology on Information Transmission and Dissemination in Communication Networks Laboratory, the 54th Research Institute of China Electronics Technology Group Corporation, Shifiazhuang, Hebei 050081 , China)

机构地区：[1]电子科技大学通信抗干扰国家级重点实验室,四川成都611731 [2]中国电子科技集团公司第五十四所通信网信息传输与分发技术重点实验室,河北石家庄050081

出　　处：《电子学报》2017年第5期1124-1129,共6页Acta Electronica Sinica

基　　金：国家自然科学基金(No.61370012);国家科技重大专项课题(No.2013ZX03005010);通信网信息传输与分发技术重点实验室开放课题(No.KX152600016/ITD-U15007)

摘　　要：为了实现双向中继系统在满足传输速率要求时的最小功率消耗,基于功率分割中继协议,在完美和非完美的信道估计两种不同的情况下,提出了能量收集双向中继网络的高能效联合中继选择和功率分配算法,得到了两个信源的最优功率分配和中继节点最优的能量收集比例.仿真结果表明,信道估计误差会增加系统的功率消耗;与传统双向中继比较发现,能量收集双向中继能够实现更少的系统功率消耗.To achieve the objective of minimizing the system transmit power consumption at required end-to-end rates, we propose the optimal energy-efficient relay selection and power allocation method for energy harvesting two-way relay network based on the power splitting-based relaying protocol when the system has perfect CSI and imperfect CSI, the optimal power allocation of two sources and optimal energy harvesting proportion at relays are formulated. Simulation results show that channel estimation error would increase the total transmit power consumption, and energy harvesting two-way relay network could achieve less power consumption compared to conventional two-way relay network.

关 键 词：双向中继网络 中继选择 功率分配 能量收集 信道估计误差 

分 类 号：TN925[电子电信—通信与信息系统]