New Generalized Multistream Spatial Modulation for Wireless Communications

Abstract

We consider a new generalized multistream spatial modulation system which employs time-variable number of all possible active antenna combinations. The case for no antenna is active is also included. Optimized four-dimensional signal constellation is constructed on the basis of combination of binary frequency shift keying and M-ary phase shift keying. The receiving side contains linear diversity combining scheme and signal detector. The signal transmission over Rayleigh fading channel with additive white Gaussian noise is considered. It is assumed that at the receiver the channel state information is known and this knowledge is used during signal detection procedure. For particular four-dimensional constellations, specific number of transmit and receive antennas and different bandwidth of signals we estimated the symbol error rate performances.