OFDM通信系统抗多径衰落性能仿真，最后给出不同信道下，循环前缀、均衡技术对系统误码率影响的比较曲线，并得出结论。-OFDM communication system simulation of multipath fading Finally, under different channel, cyclic prefix, equalization impact on the system bit error rate comparison curve, and draw conclusion