基于能量收集的多对双向MIMO AF中继系统的和速率分析

doi:10.3969/j.issn.0372-2112.2019.03.003

电子学报 ›› 2019, Vol. 47 ›› Issue (3): 531-537.DOI: 10.3969/j.issn.0372-2112.2019.03.003

基于能量收集的多对双向MIMO AF中继系统的和速率分析

李高祥^1,2, 杨霖^1,2, 林旭彬¹

1. 电子科技大学通信抗干扰技术国家级重点实验室, 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

收稿日期:2017-01-11 修回日期:2018-09-09 出版日期:2019-03-25 发布日期:2019-03-25
作者简介:李高祥 男,1993年生于山西临汾.电子科技大学通信抗干扰技术国家级重点实验室硕士研究生.研究方向为双向中继系统的性能优化.E-mail:571299065@qq.com;杨霖男,1977年生于四川宜宾.电子科技大学通信抗干扰技术国家级重点实验室副教授.研究方向为无线与移动通信、现代通信中的信号处理.E-mail:eelyang@uestc.edu.cn;林旭彬 男,1993年生于福建漳州.本科就读于电子科技大学通信与信息工程学院,现于电子科技大学通信抗干扰技术国家级重点实验室攻读硕士研究生.主要研究方向为稀疏码多址接入、正交频分复用技术.
基金资助:
国家自然科学基金（No.61831004，No.61571082）；通信抗干扰技术国家级重点实验室基础科研创新基金（No.IFN2018218）；国防基础科研计划资助（No.JCKY2017204A603）；国防科技创新特区项目；通信网信息传输与分发技术重点实验室开放课题（No.614210402070517）

Sum Rate Analysis of Multi-pair Two-Way MIMO AF Relay System Based on Energy Harvesting

LI Gao-xiang^1,2, YANG Lin^1,2, LIN Xu-bin¹

1. National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China, Chengdu, Sichuan 611731, China;
2. Science and Technology on Information Transmission and Dissemination in Communication Networks Laboratory, the 54th Research Institute of China Electronics Technology Group Corporation, Shijiazhuang, Hebei 050081, China

Received:2017-01-11 Revised:2018-09-09 Online:2019-03-25 Published:2019-03-25

摘要/Abstract

摘要： 采用基于中继功率分配的能量收集方法，中继将接收到的部分射频信号转化为能量并利用收集到的能量放大和转发剩下的信号，通过在中继使用最大比合并/最大比传送的接收和预编码技术，推导出每个用户的遍历速率的下界表达式，然后研究了使所有用户和速率最大的最佳中继功率分配比.仿真结果说明了在最佳中继功率分配比的条件下可以得到最大的和速率，同时给出了和速率与中继天线数和用户对数的关系，并表明了在用户总功率一定的条件下，能量收集中继系统的性能优于传统的没有能量收集的中继系统.

关键词: 双向中继系统, 多对用户, 能量收集, 中继功率分配, 最大比合并/最大比传送, 和速率

Abstract: An energy harvesting method based on power splitting-based relay is adopted,where the relay converts part of the received radio frequency signals into energy and amplifies and forwards the remaining signal using the collected energy.By using maximum-ratio combining/maximum-radio transmission receiving and precoding technology at the relay node,the corresponding lower bound expressions for the ergodic rate of each user are derived and the optimal relay power allocation ratio which maximizes the sum rate of all users is calculated.The simulation results show that the maximum sum rate can be obtained under the optimal relay power allocation ratio,and the relationship between the sum rate with the number of relay antennas and the number of users is given.What's more,the performance of the relay system based on energy harvesting outperforms that without energy harvesting.

Key words: two-way relay system, multipair users, energy harvesting, power splitting based relay, maximum-ratio combining/maximum-radio transmission, sum rate

中图分类号:

TN925

李高祥, 杨霖, 林旭彬. 基于能量收集的多对双向MIMO AF中继系统的和速率分析[J]. 电子学报, 2019, 47(3): 531-537.

LI Gao-xiang, YANG Lin, LIN Xu-bin. Sum Rate Analysis of Multi-pair Two-Way MIMO AF Relay System Based on Energy Harvesting[J]. Acta Electronica Sinica, 2019, 47(3): 531-537.

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基于能量收集的多对双向MIMO AF中继系统的和速率分析

Sum Rate Analysis of Multi-pair Two-Way MIMO AF Relay System Based on Energy Harvesting

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