High Rate Transmission in Spatial Modulation

Multiple Active Antenna –Spatial Modulation (MA-SM) is a high rate, low complexity MIMO transmission scheme. It takes the advantage of low complexity of SM and high multiplexing gain of V-BLAST system. Here, the information bits are conveyed by both the constellation symbol and spatial symbol. To benefit the available multiplexing gain, active antennas could be any number not more than the number of transmit antennas. However, this leads to degradation in system performance due to the presence of ICI and IAI. In this paper, SVD based precoding technique and Genetic Algorithm based symbol detection have been introduced to reduce ICI and thereby improving the system performance. Simulation results show that the proposed scheme improves the BER performance.