need a code for amplitude, frequency and phase shift keying

Amplitude Shift Keying

hi i need a code for amplitude, frequency and phase shift keying......
please help....

Amplitude Shift Keying

Here's my contribution:

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Re: Amplitude Shift Keying

Hi my Friend,

See the following Matlab program for 64-QAM: you can modify it according to your request !!!



clc;

clear all;close all;

disp('M-Array QAM Modulation')

%create a random digital message

M=64; %alphabet size

x=randint(input('Number of binary bit stream = '),1,M);

y=modulate(modem.qammod(M),x);



%% transmit signal through an AWGN Channel

ynoisy=awgn(y,input('SNR in dB = '),'measured');

scatterplot,grid;

figure(2)

pwelch

%% Create scattet plot from noisy data



scatterplot(ynoisy),grid;

%% Demodulate ynoisy to recover the message.

z=demodulate(modem.qamdemod(M),ynoisy);

figure(4);

subplot(2,1,1);

stem(x(1:10),'filled'),grid;

subplot(2,1,2);

stem(z(1:10),'filled'),grid;

%%

%Check symbole erroe rate.

[num ty]=symerr(x,z)



Regards.

Amplitude Shift Keying

search edaboard>digital communication forum for Matlab codes you'll find them or search on mathworks.com