给出了OFDM在卫星通信中的系统框图并 在Simulink中仿真实现，利用改进的CMA恒模算法进行盲均衡处理，来去除时变卫星信道对信号的影响,基于4阶累积量的方法 将OFDM信号与其他调制类型信号区分开来-OFDM is given in the satellite communication system block diagram and Simulation in Simulink using the modified constant modulus algorithm CMA

Alim, O. A., N. Elboghdadly, et al. (2007). Channel estimation and equalization for fixed/mobile OFDM WiMAX system in simulink. Proceedings of the 1st international conference on MOBILe Wireless MiddleWARE, Operating Systems, and Applications. Innsbr

Every thing about MIMO system and OFDM, including Matlab source, timing, frequency synchronization, equalization, estimation, PAPR, space time block code, channel capacity

（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。((1) the theoretical error rate performance of BPSK coherent demodulation in single path Rayleigh channel is