Passing signal to AWGN channel after QPSK modulation and plotting BER at SNR

Passing signal to AWGN channel after QAM modulation and plotting BER at SNR

使用于初学Matlab的人，讲了QAM的调制解调以及误码率和信噪比的计算。-It is useful for the people who use the matlab first time. Both the modulation and the demodulation and the relationship between ber and snr are in the file.

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