MATLAB Simulation of PSK passband signaling to measure the BER (Bit Error Rate)

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The MATLAB script file can be downloaded at kr.mathworks.com/matlabcentral/fileexchange/173590-matlab-simulation-of-psk-passband-signaling-to-measure-ber.
%sim_PSK_passband.m
% simulates a digital communication system with QPSK signal waveforms in Fig.7.7
%Copyleft: Won Y. Yang, [e-mail], CAU for academic use only
clear, clf
b=2; M=2^b; % Number of bits per symbol and Modulation order
ss=bin2gray([0:M-1],'psk',M); % Symbol (Alphabet) set
Tb=1e-5; Ts=b*Tb; % Bit/Symbol durations
Nb=32; Ns=b*Nb; % Number of samples per Ts and Sample time
T=Ts/Ns; LB=4*Ns; LBN1=LB-Ns+1; % Sample time, Buffer size
Es=2; sqEs=sqrt(Es); % Energy of signal waveform
wc=8*pi/Ts; % Carrier frequency
t=[0:Ns-1]*T; wcT=wc*T;
nd=0; % Number of delay samples
% PSK signal waveforms
phases=2*pi/M*[0:M-1]; gs='>^^