Design and Implementation of Nonlinear Precoding for MIMO-SDMA Toward 6G Wireless  

作　　者：Chaowu Wu Yue Xiao Shu Fang Gang Wu 

机构地区：[1]National Key Laboratory of Wireless Communications,University of Electronic Science and Technology of China,Chengdu 611731,China

出　　处：《China Communications》2024年第1期69-87,共19页中国通信（英文版）

基　　金：supported in part by National Key R&D Program of China(2020YFB1807203);National Science Foundation of China under Grant number 62071111;the Fundamental Research Funds for the Central Universities under Grant 2242022k60006;Natural Science Foundation of Sichuan Province under Grant number 2022NSFSC0487;the National Key Laboratory of Wireless Communications Foundation under Grant IFN20230104。

摘　　要：In this paper,we present a novel and robust nonlinear precoding(NLP)design and detection structure specifically tailored for multiple-input multipleoutput space division multiple access(MIMO-SDMA)systems toward 6G wireless.Our approach aims to effectively mitigate the impact of imperfect channel estimation by leveraging the channel fluctuation mean square error(MSE)for reconstructing a highly accurate precoding matrix at the transmitter.Furthermore,we introduce a simplified receiver structure that eliminates the need for equalization,resulting in reduced interference and notable enhancements in overall system performance.We conduct both computer simulations and experimental tests to validate the efficacy of our proposed approach.The results reveals that the proposed NLP scheme offers significant performance improvements,making it particularly well-suited for the forthcoming 6G wireless.

关 键 词：MIMO-SDMA nonlinear precoding Tomlinson-Harashima precoding(THP) vector perturbation(VP) 

分 类 号：TN929.5[电子电信—通信与信息系统]