文献类型：期刊文献

英文题名：Linear Transceiver Design for Multi-Tag Symbiotic Radio Systems With Max-Min Fairness

作者：Fang, Zhaoxi[1];Zhou, Jing[2];Li, Huxiong[1];Fang, Kaiming[2]

机构：[1]Shaoxing Univ, Sch Mech & Elect Engn, Dept Comp Sci & Engn, Shaoxing 312010, Peoples R China;[2]Shaoxing Univ, Sch Mech & Elect Engn, Dept Comp Sci & Engn, Shaoxing 312010, Peoples R China

年份：2023

卷号：27

期号：12

起止页码：3385

外文期刊名：IEEE COMMUNICATIONS LETTERS

收录：SCI-EXPANDED(收录号：WOS:001126149900008)、、EI(收录号：20234615061038)、Scopus(收录号：2-s2.0-85176343041)、WOS

基金：No Statement Available

语种：英文

外文关键词：Array signal processing; Signal to noise ratio; Interference; Optimization; Backscatter; Minimax techniques; Symbiosis; Symbiotic radio; beamforming design; energy harvesting; semi-definite relaxation

外文摘要：This letter considers a multi-tag symbiotic radio system, where a multi-antenna source node transmits its own message to a multi-antenna destination, while multiple backscatter tags transmit data to the destination by directly reflecting the incident signals from the source. We investigate the joint transmit/receive beamforming design for the purpose of maximizing the minimum signal-to-interference-plus-noise ratio (SINR) of the tags, subject to the SINR constraint for the source and the harvested power constraints for the tags. We propose an efficient beamforming design algorithm based on bisection search, semi-definite relaxation (SDR) and alternating optimization. A suboptimal beamforming design algorithm is also proposed to reduce the complexity. Numerical results show that the proposed beamforming designs outperform the counterpart scheme significantly.