Multiuser Pre-Coding Aided Quadrature Spatial Modulation for Large-Scale MIMO Channels  

作　　者：Fatang Chen Kang Yang Pingping Xing Huan Zhang Yanan Jiang 

机构地区：[1]College of Communication and Information Engineering , Chongqing University of Posts and Telecommunications

出　　处：《China Communications》2018年第11期62-69,共8页中国通信（英文版）

基　　金：partially supported by the National Natural Science Foundation of China (Grant No. 61701063);Scientific and Technological Research Program of Chongqing Municipal Education Commission (No. KJ1600435)

摘　　要：Pre-coding aided quadrature spatial modulation(PQSM) is a promising multiple input multiple output(MIMO) transmission technology. The multiuser(MU) detection in PQSM system is investigated in this paper. Based on the known channel state information, pre-coding matrix is designed to pre-process the in-phase and quadrature signals of quadrature spatial modulation(QSM) to reduce the inter-channel interference. In order to lower the complexity at the receiver brought by the orthogonality of the PQSM system, an orthogonal matching pursuit(OMP) detection algorithm and a reconstructed model are proposed. The analysis and simulation results show that the proposed algorithm can obtain a similar bit error rate(BER) performance as the maximum likelihood(ML) detection algorithm with more than 80% reduction of complexity.Pre-coding aided quadrature spatial modulation （PQSM） is a promising multiple input multiple output （MIMO） transmission technology. The multiuser （MU） detection in PQSM system is investigated in this paper. Based on the known channel state information, pre-coding matrix is designed to pre-process the in-phase and quadrature signals of quadra- ture spatial modulation （QSM） to reduce the inter-channel interference, in order to lower the complexity at the receiver brought by the orthogonality of the PQSM system, an orthog- onal matching pursuit （OMP） detection algo- rithm and a reconstructed model are proposed. The analysis and simulation results show that the proposed algorithm can obtain a similar bit error rate （BER） performance as the maximum likelihood （ML） detection algorithm with more than 80% reduction of complexity.

关 键 词：pre-coding generalized quadra-ture spatial modulation bit error performance maximum likelihood 

分 类 号：TN929.5[电子电信—通信与信息系统]