Performance Analysis of Alamouti Scheme With Imperfect Multiple Transmit Antennas Selection in Rayleigh Fading Channel

In a multiple-input-single-output (MISO) communications system, we take the presence of the erroneous channel state information (CSI) into consideration. Multiple transmit antennas selection (TAS) over MISO systems with Alamouti space-time scheme is investigated, and a solution over order statistic characteristic of the selective channel with CSI feedback error is proposed. We assume that channel is an independent and flat Rayleigh fading channel and the system employs binary phase-shift keying (BPSK) modulation. The accurate analytical expressions of bit-error rate (BER) of Alamouti scheme with TAS have been derived. The analysis results show that when the error is existed in CSI we ought to try to choose the subset consisting of largest ordinal number as transmit in a practical system.