中文说明：
（1）请推导出单径瑞利信道中的BPSK相干解调的理论误码率性能，并画出比特信噪比与误码率的关系曲线。
（2）在单径瑞利信道中，请设计一种时分的导引辅助的信道估计方法，用Simulink进行仿真，测量BPSK的误码率性能，画出比特信噪比与误码率的关系曲线，并与(1)的曲线进行对比。
English Description：
(1) Please deduce the theoretical bit error rate performance of BPSK coherent demodulation in single path Rayleigh channel, and draw the relationship curve between bit signal-to-noise ratio and bit error rate < p > (2) in single path Rayleigh channel, please design a time-division guidance assisted channel estimation method, simulate with Simulink, measure the bit error rate performance of BPSK, draw the relationship curve between bit signal-to-noise ratio and bit error rate, and compare it with the curve in (1)