Robust Transmit Beamforming for Self-Interference Cancellation in STAR Phased Array Systems

被引：19

作者：

Shi, Chengzhe ^{[1
,2
]}

Pan, Wensheng ^{[1
,2
]}

Shen, Ying ^{[1
,2
]}

Shao, Shihai ^{[1
,2
]}

机构：

[1] Univ Elect Sci & Technol China, Natl Key Lab Sci & Technol Commun, Chengdu 611731, Peoples R China

[2] Lab Electromagnet Space Cognit & Intelligent Contr, Beijing 100089, Peoples R China

来源：

IEEE SIGNAL PROCESSING LETTERS | 2022年 / 29卷

基金：

中国国家自然科学基金;

关键词：

Array signal processing; Phased arrays; Antenna arrays; Receiving antennas; Interference cancellation; Uncertainty; Stars; Simultaneous transmit and receive (STAR); phased array; self-interference (SI) cancellation; transmit beamforming (TxBF); worst-case uncertainty channel error model; MIMO SYSTEMS;

D O I：

10.1109/LSP.2022.3229641

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In simultaneous transmit and receive (STAR) phased array systems, suffering from the multi-dimensional cross-coupling strong self-interference (SI), the radio frequency (RF) front-end of receive array is severely saturated. Against this issue, we present a transmit beamforming (TxBF) SI cancellation (SIC) design to construct the TxBF vector, where a robust TxBF SIC optimization problem with maximum receive power constraints and a worst-case uncertainty channel error model is formulated, the approximation solution of which is solved by the semidefinite relaxation and S-procedure. Simulation results show that our design effectively avoids the RF front-end saturation at the cost of near-minimum beamforming gain loss within a given uncertainty channel error bound.

引用

页码：2622 / 2626

页数：5

共 18 条

[1] On Spherical vs. Plane Wave Modeling of Line-of-Sight MIMO Channels [J].