QAM Analysis

 %%%%%%% SURAJ BASTOLA %%%%%%%

%%%%%%%%% QAM Analysis %%%%%%%%%%%%

clear all;

clc

close all;

M = 256;

k = 0:M-1;

Fs = 8000;

[y,Fs] = audioread('C:\Users\suraj\OneDrive\Documents\MIT COLLEGE\Software Defined Radio Communication\MATLAB COding\audioRecorded.wav');

data = dec2bin( typecast( single(y), 'uint8'), 8 ) - '0';

A = qammod(data,M);% QAM symbol generation

x = zeros(1,M);

for i = k

    sum = 0;

    for m = k

        sum = sum + A(m+1)*exp(2i*pi*m*i/M);

    end

    x(i+1) = sum;

end

x2 = ifft(A,M);

subplot(211);

%plot(abs(x2))

hist(real(x2),5);

title('Real Part')

subplot(212)

hist(imag(x2),5);

%plot(imag(x2))

title('Imaginary Part')

sgtitle('QAM signal generation')