Is there any Matlab built-in function for 4ASK and 8ASK modulation?
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i have found below function but i don't know where to change for 4 and 8Ask.
format long;
% Clear all variables and close all figures
clear all;
close all;
% The number of bits to send - Frame Length
N = 8;
% Generate a random bit stream
bit_stream = round(rand(1,N));
% Enter the two Amplitudes
% Amplitude for 0 bit
A1 = 3;
% Amplitude for 1 bit
A2 = 5;
% Frequency of Modulating Signal
f = 3;
% Sampling rate - This will define the resoultion
fs = 100;
% Time for one bit
t = 0: 1/fs : 1;
% This time variable is just for plot
time = [];
ASK_signal = [];
Digital_signal = [];
for ii = 1: 1: length(bit_stream)
% The FSK Signal
ASK_signal = [ASK_signal (bit_stream(ii)==0)*A1*sin(2*pi*f*t)+...
(bit_stream(ii)==1)*A2*sin(2*pi*f*t)];
% The Original Digital Signal
Digital_signal = [Digital_signal (bit_stream(ii)==0)*...
zeros(1,length(t)) + (bit_stream(ii)==1)*ones(1,length(t))];
time = [time t];
t = t + 1;
end
% Plot the ASK Signal
subplot(2,1,1);
plot(time,ASK_signal,'LineWidth',2);
xlabel('Time (bit period)');
ylabel('Amplitude');
title('ASK Signal with two Amplitudes');
%axis([0 time(end) 1.5 1.5]);
grid on;
% Plot the Original Digital Signal
subplot(2,1,2);
plot(time,Digital_signal,'r','LineWidth',2);
xlabel('Time (bit period)');
ylabel('Amplitude');
title('Original Digital Signal');
axis([0 time(end) -0.5 1.5]);
grid on;
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Respuestas (1)
Walter Roberson
el 10 de Jun. de 2021
No, there is no built-in function for that. See however the File Exchange https://www.mathworks.com/matlabcentral/fileexchange/47375-ber-of-m-ask-modulation and use different M= values.
16 comentarios
john karli
el 21 de En. de 2022
Editada: Walter Roberson
el 21 de En. de 2022
Hellow Walter
I need your help please.
Can you add the above ASK modulation code in the following function of MATLAB?
Walter Roberson
el 21 de En. de 2022
As I read through the example, it looks to me as if it would be do-able to edit in support for ASK as well.
However, this is not something that I have time to do myself at present.
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