beat2\1.fig .....\down_convert_ofdm.m .....\err_rate .....\err_rate.txt .....\fft_my.m .....\main2.m .....\psC.m .....\QAMdemodulation.m .....\QAMmodulation.m .....\sample.m .....\spC.m .....\spread.m .....\up_convert_ofdm.m .....\up_sample.m beat2