通过MATLAB软件；通过仿真得出性能曲线；从而比较bpsk的性能-The bit-error rate (BER) of binary phase-shift keying in Rayleigh fading, using the Alamouti transmission scheme and receiver selection diversity in the presence of channel-estimation error, is studied. Closed-

对空时码在不同信噪比下性能仿真比较，可以画出信噪比曲线。-Pairs of space-time codes in different SNR performance simulation of comparison, the SNR curve can be drawn.