这个程序除了接收机同步、信道编码没有加入外，基本上反映了一个OFDM系统的特性： 1. qpsk/16qam/64qam映射、解映射 2. OFDM调制解调（循环前缀，FFT等） 3. 非整数采样时刻多径时延的多径信道 4. Rayleigh或者Rician多径信道 5. 信道的连续时变（非block fading） 6. 线性插值信道估计 7. FFT变换域插值信道估计-In addition to this program receiver synchroniza

This file simulates OFDM using various modulations schemes The user chooses whether to use BPSK or QPSK ar 16-QAM. Then the code proceeds by inserting Cyclic Prefix and Pilot Signals This is followed by FFT (Fast Fourier Transform) A channel is simul