user will give bits code will give fsk,psk,ask in matlab

main.m
bits = input('Enter the bit code: '); % Prompt the user to enter the bit code

% FSK modulation parameters
fsk_freq1 = 1000; % Frequency for bit '0'
fsk_freq2 = 2000; % Frequency for bit '1'
fsk_duration = 0.1; % Duration of each bit

% PSK modulation parameters
psk_phase0 = 0; % Phase for bit '0'
psk_phase1 = pi; % Phase for bit '1'
psk_duration = 0.1; % Duration of each bit

% ASK modulation parameters
ask_amp0 = 0; % Amplitude for bit '0'
ask_amp1 = 1; % Amplitude for bit '1'
ask_duration = 0.1; % Duration of each bit

% Initialize the arrays for storing the generated signals
fsk_signal = [];
psk_signal = [];
ask_signal = [];

% Generate the FSK, PSK, and ASK signals based on the input bit code
for i = 1:length(bits)
    % FSK modulation
    if bits(i) == '0'
        fsk_bit = sin(2*pi*fsk_freq1*(0:1/1000:fsk_duration));
    elseif bits(i) == '1'
        fsk_bit = sin(2*pi*fsk_freq2*(0:1/1000:fsk_duration));
    else
        disp('Invalid bit code.'); % Display an error message for invalid input
        return;
    end
    fsk_signal = [fsk_signal, fsk_bit];
    
    % PSK modulation
    if bits(i) == '0'
        psk_bit = sin(psk_phase0 + 2*pi*(0:1/1000:psk_duration));
    elseif bits(i) == '1'
        psk_bit = sin(psk_phase1 + 2*pi*(0:1/1000:psk_duration));
    else
        disp('Invalid bit code.'); % Display an error message for invalid input
        return;
    end
    psk_signal = [psk_signal, psk_bit];
    
    % ASK modulation
    if bits(i) == '0'
        ask_bit = ask_amp0 .* ones(1001,1);
    elseif bits(i) == '1'
        ask_bit = ask_amp1 .* ones(1001,1);
    else
        disp('Invalid bit code.'); % Display an error message for invalid input
        return;
    end
    ask_signal = [ask_signal, ask_bit];
end

% Plot the generated FSK, PSK, and ASK signals
t = (0:length(fsk_signal)-1)/1000;
subplot(3,1,1);
plot(t, fsk_signal);
title('FSK Signal');
xlabel('Time (s)');
ylabel('Amplitude');

subplot(3,1,2);
plot(t, psk_signal);
title('PSK Signal');
xlabel('Time (s)');
ylabel('Amplitude');

subplot(3,1,3);
plot(t, ask_signal);
title('ASK Signal');
xlabel('Time (s)');
ylabel('Amplitude');
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