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- in a single path Rayleigh channel, please design a secondary peak guide channel estimation method, the Simulink simulation, BPSK BER performance m