ofdm.m为主程序，可以运行，将得到迭加噪声之后的误码率曲线，并与理论QPSK加高斯白噪声误码率曲线比较，两者将重合,ofdm.m-based program, you can run, will be after the noise superposition error rate curve, and with the theoretical QPSK plus white Gaussian noise bit error rate curves, which will coincide

在QPDK和16QAM的调制方式下仿真OFDM 的误码率性能(OFDM bit error ratio in QPSK or 16QAM)

通信OFDM传输，信号通过加入导频，循环前缀，交织变换，经过瑞丽信道，通过QPSK解调，译码，判断误码率。(Communication OFDM transmission, the signal by adding pilots, cyclic prefix, interleaved transform, after Rayleigh channel, demodulated by QPSK, decoding, to determine the bit error rate.)

本程序对ofdm系统的高白噪声下理论误码率进行仿真。包括bpsk，qpsk，16-QAM，64QAM映射(This program simulates the theoretical BER of OFDM system under high white noise. Including BPSK, QPSK, 16-QAM, 64QAM mappings)