强相关自干扰信道下全双工基站的最优预编码

王俊; 文宵杰; 黄川; 卿朝进

doi:10.1631/FITEE.1700022

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强相关自干扰信道下全双工基站的最优预编码

5G无线通信系统与技术专辑 | Updated：2022-05-19

- 强相关自干扰信道下全双工基站的最优预编码
- Optimal precoding for full-duplex base stations under strongly correlated self-interference channels
- 信息与电子工程前沿（英文） 2017年18卷第6期页码：808-816
- Affiliations：
  
  College of Electrical and Information Engineering, Southwest University for Nationalities, Chengdu 610041, China
  Beijing Institute of Satellite Information Engineering, Beijing 100086, China
  National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China, Chengdu 611731, China
  School of Electrical and Information Engineering, Xihua University, Chengdu 610039, China
- Author bio：
  
  [ "Jun WANG, E-mail: 13880458609@139.com" ]
  [ "Xiao-jie WEN, E-mail: ziwen7189@aliyun.com" ]
  Chuan HUANG, E-mail: huangch@uestc.edu.cn
  [ "Chao-jin QING, E-mail: qingchj@uestc.edu.cn" ]
- Funds：
  
  Project supported by the National Natural Science Foundation of China (Nos. 61401030 and 61501093)
- DOI：10.1631/FITEE.1700022
  中图分类号： TN92
- 收稿：2017-01-09，
  
  修回：2017-;5-30，
  
  纸质出版：2017-06
- Accepted：
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王俊, 文宵杰, 黄川, 等. 强相关自干扰信道下全双工基站的最优预编码[J]. 信息与电子工程前沿（英文）, 2017,18(6):808-816.

Jun WANG, Xiao-jie WEN, Chuan HUANG, et al. Optimal precoding for full-duplex base stations under strongly correlated self-interference channels[J]. Frontiers of Information Technology & Electronic Engineering, 2017, 18(6): 808-816.
王俊, 文宵杰, 黄川, 等. 强相关自干扰信道下全双工基站的最优预编码[J]. 信息与电子工程前沿（英文）, 2017,18(6):808-816. DOI： 10.1631/FITEE.1700022.

Jun WANG, Xiao-jie WEN, Chuan HUANG, et al. Optimal precoding for full-duplex base stations under strongly correlated self-interference channels[J]. Frontiers of Information Technology & Electronic Engineering, 2017, 18(6): 808-816. DOI： 10.1631/FITEE.1700022.

摘要

考虑了包含1个全双工多天线基站、2个半双工单天线移动用户的全双工蜂窝系统，研究了其全双工多天线基站的最优预编码方案。由于全双工多天线基站在同一频段上同时收发数据，其接收来自远端用户的期望信号将会受到来自本地发射天线大功率自干扰信号的严重影响。由于现有自干扰消除技术不能将自干扰信号完全抵消，考虑存在残余自干扰信号的场景，构造了上行传输速率受限的下行传输速率最大化问题，以刻画上述全双工蜂窝系统的可达速率区域。然而，上述问题不是凸优化问题。鉴于此，考虑强相关自干扰信道场景，利用自干扰信道矩阵秩为1的特点，将上述非凸优化问题变换为凸优化问题，并利用凸优化工具对其求解，得到全双工多天线基站的最优预编码方案。最后，通过数值仿真验证了该方案的有效性。

Abstract

We study the optimal precoding for a full-duplex (FD) system

where one FD multi-antenna base station (BS) respectively transmits to and receives from two half-duplex single-antenna mobile users (MUs) on the same time slot and frequency band. At the FD BS

the received signal from the desired MU is severely affected by the extremely strong self-interference (SI) from its transmit antennas to the receive antennas. In the presence of residual SI after imperfect SI cancellation

the downlink transmission rate maximization problem subject to a targeted uplink rate is formulated as a non-convex optimization problem to characterize the achievable rate region for the considered system. Considering the case in which the SI channel is strongly correlated

the above problem is transformed into a convex problem by exploiting the rank-one property of the SI channel

which can be solved efficiently. Finally

numerical results validate the effectiveness of the proposed scheme.

关键词

Keywords

references

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