程序plot_CCDF.m用来显示当N=64，128，256，512，1024时，OFDM信号的理论CCDF和仿真CCDF。该程序调用PAPR.m来计算PAPR，调用mapper.m来实现PSK/QAM调制。-Program plot_CCDF.m to display when N = 64,128,256,512,1024, the theory and simulation CCDF CCDF OFDM signal. The program calls PAPR.m to calculate the PAPR, call mapper.m to achieve PSK/QAM modulation.