i have generated a modulated signal with noise at the user, and this user is moving with velocity (Initial Velocity = 0, constant velocity = 20 km\hr and maximum velocity = 50 km\hr), how can it be done? any suggestions appriciated, thanks in advance.
fs = 50;
t = (0:2*fs+1)'/fs;
%Create a sinusoidal input signal.
x = sin(2*pi*t) + sin(4*pi*t);
%Set the carrier frequency and phase deviation.
fc = 10;
phasedev = pi/2;
%Modulate the input signal.
tx = pmmod(x,fc,fs,phasedev);
%Apply white Gaussian noise and plot the results.
y = awgn(x,10,'measured');