It discusses the BPSK, QPSK, 16QAM, 2FSK basic principles of modulation and demodulation, and various modulation error performance in AWGN channel and flat Raleigh channel. Also introduces the principle of OFDM modulation and demodulation. Using MATLAB programming, simulation experiment was carried out.

modulata and demodulation
.........................\AWGN.m
.........................\BFSK_Rayleigh.m
.........................\BPSK_Rayleigh.m
.........................\comb.m
.........................\delay.m
.........................\fade.m
.........................\hrollfcoef.m
.........................\OFDM.m
.........................\oversamp.m
.........................\oversamp2.m
.........................\QAM_rayleigh.m
.........................\QAM_Rayleign.m
.........................\QPSK_rayleigh.m
.........................\rayleigh.m
.........................\sefade.m

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