电子学报 ›› 2018, Vol. 46 ›› Issue (5): 1213-1221.DOI: 10.3969/j.issn.0372-2112.2018.05.029

• 学术论文 • 上一篇    下一篇

全双工信息与能量同传系统的鲁棒性预编码及高能效时隙分配方案

谢显中, 陈九九, 扶渝茜   

  1. 重庆邮电大学个人通信研究所, 重庆 400065
  • 收稿日期:2017-05-11 修回日期:2017-10-20 出版日期:2018-05-25 发布日期:2018-05-25
  • 作者简介:谢显中 男,1966年出生,四川通江人,教授、博士,现主要从事无线和移动通信技术的研究.E-mail:xiexzh@cqupt.edu.cn;陈九九 男,1994年出生,湖南岳阳人,硕士研究生.现主要从事全双工技术及信息与能量同传技术的研究.E-mail:chenjiuj0618@163.com;扶渝茜 女,1993年出生,四川内江人,硕士研究生.现主要从事全双工技术及能量收集技术的研究.
  • 基金资助:
    国家自然科学基金(No.61271259,No.61471076,No.61601070);重庆市教委科学技术研究项目(No.KJ1600411);重庆市基础与前沿研究计划项目(No.CSTC2016jcyjA0455);长江学者和创新团队发展计划(No.IRT1299);重庆市科委重点实验室专项经费(No.CSTC)

Robust Precoding and Energy-Efficient Timeslot Allocation for Full-Duplex SWIPT System

XIE Xian-zhong, CHEN Jiu-jiu, FU Yu-xi   

  1. Institute of Personal Communications, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
  • Received:2017-05-11 Revised:2017-10-20 Online:2018-05-25 Published:2018-05-25

摘要: 最近全双工信息与能量同传系统(FD-SWIPT)受到高度重视,区别于现有研究,本文在最大化多天线FD-SWIPT系统的和速率的同时,考虑了其鲁棒性和能量效率,并提出了一种FD-SWIPT系统的鲁棒性预编码及高能效时隙分配方案.由于优化涉及的因素很多,这是一个多个变量的非凸优化问题,在数学上很难求解.首先,为减少全双工系统中自干扰对和速率造成的影响,基于奇异值分解及最小均方误差算法对系统自干扰进行消除;然后,固定时隙分配因子,在自干扰信道存在估计误差的情况下,基于一阶泰勒凸逼近对原优化问题进行鲁棒预编码设计,并给出相应的迭代算法;进一步,提出了不同约束条件下的时隙分配方案,并推导了不同方案下的时隙分配因子的最优解.最后,通过仿真实验与现有结果比较,验证了本文方案的性能优势.

关键词: 全双工, 信息与能量同传, 鲁棒性预编码, 时隙分配, 自干扰消除, 能量效率

Abstract: Recently,there has been an upsurge of interest in full-duplex(FD) system with simultaneous wireless information and power transfer(SWIPT).Differing from the existing work,this paper optimizes the sum rates(SR) of multi-antenna FD-SWIPT system and considers its robustness and energy efficiency,also,this paper proposes robust precoding design and energy-efficient timeslot allocation scheme for FD-SWIPT system.On account of numerous variables,this optimization problem is of non-convex and hence difficult to solve.Firstly,in order to reduce the influence of self-interference,the self-interference is cancelled based on singular value decomposition(SVD) and mean-square-error(MSE) algorithm.Then,with the fixed timeslot allocation factor,on condition that there is evaluated error for self-interference channel,we propose the robust precoding design for the original problem based on first-order Taylor's series approximation,and the corresponding iterative algorithm is given.Furthermore,the timeslot allocation schemes under different constraints are proposed,and the optimal solution of timeslot allocation Factors is deduced.Finally,the performance advantages of the proposed scheme are verified by comparing the simulation experiment with the existing results.

Key words: full-duplex, simultaneous wireless information and power transfer, robust precoding, timeslot allocation, self-interference cancellation, energy efficiency

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