Low-complexity compressive sensing detection for multi-user spatial modulation systems

In this work we present a low-complexity detection scheme for spatial modulation (SM) systems in the large-scale multiple access channel (MAC). The proposed strategy is based on compressive sensing (CS) and it exploits the sparsity and structure of the transmitted SM signals in the MAC to enhance the detection performance. The analytical and simulation results presented in this paper show that the proposed technique outperforms conventional CS and linear detectors with a reduced signal processing complexity.