A novel two-antenna spatial modulation technique with simultaneous transmission

A performance-enhanced two-transmit antenna spatial modulation (SM) technique is introduced and analysed. Specifically, this paper modifies the conventional spatial modulation technique by utilising simultaneous transmission from both antennas to improve the diversity aspect and hence the system performance. A unique symbol to antenna assignment to enable the receiver to distinguish between the different possible constellation points is also presented. To highlight the achieved gains, the paper compares the performances of the proposed and conventional SM techniques in multipath fading channels. The results show that the proposed technique outperforms the conventional one in terms of BER performance. Turbo forward error correction coding is used to further highlight the achieved gains in a channel-coded system.