lab2.m

再不同传输环境下

close all;
SNR_db=[15,20,25];
N_symbols = 10000; % Number of symbols in the calculation
M=32;
N_samples_per_symbol=8;
%genere donn閑s dans l,alphabet M-aire
x=randsrc(N_symbols,1,0:M-1);
y=qammod(x,M,0,'gray');

%Partie A
for i=1:3
    ybruit=awgn(y,SNR_db(i),'measured');
    scatterplot(ybruit); title(['Signal modul