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《China Communications》 2018-11
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Multiuser Pre-Coding Aided Quadrature Spatial Modulation for Large-Scale MIMO Channels

Fatang Chen;Kang Yang;Pingping Xing;Huan Zhang;Yanan Jiang;College of Communication and Information Engineering , Chongqing University of Posts and Telecommunications;  
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.
【Fund】: 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)
【CateGory Index】: TN929.5
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