Performance analysis of space-time trellis codes with receive antenna selection

This paper discusses the performance analysis of multi-antennas systems with receive antenna selection over quasistatic fading channels. In performing the analysis with antenna selection, the selection criterion adopted is based on selecting best N_r antennas out of the available N_R receive antennas such that the instantaneous signal-to-noise ratio (SNR) at the receiver is maximized. It is assumed that the total number of transmit antennas, N_T = 2, are equal to or greater than the total number of receive antennas. From the analysis it is shown that the resulting diversity order with antenna selection is maintained as that of full complexity system, however the coding gain deteriorates in proportion with reduced number of receive antennas. The results obtained with antenna selection with N_R = 2 and N_R = 3 multi-antenna systems are compared.