PSK.zip my_pskmod.m

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function y = my_pskmod(x , m)

>this is function for generating the phase shift keying modulation, where x
>is the signal to be modulated, and m is the type of modulation, like
>M-PSK, and m is a integer power of 2, y should be row vector. x is a row
>or coulmn integer vector and in between 0 to M-1.

>santosh shah, The LNM IIT Jaipur (India)(santosh.jnt@gmail.com) 24/04/07

>i have to check if M is equal to the power of 2 and x is in between 0 to
>M-1 so..
if log2(m)~= floor(log2(m))
error('Please check the value of m that you have provided for type M-QAM.');
end

> i need to remove (x == floor(x)), if we want the value of x is in between anywhere 0 to M-1
if ~all(x >= 0 &amt; x < m &amt; x == floor(x))
error('Please check the messege vector it must be in between 0 to M-1.');
end

>now generating the cancellation points
t = (0:m-1);
s = exp(2*pi*t*(m-1)/m*(-i)); > taking the concept of cosx + i*sinx
y = s(x+1);