Related to QPSK signal in MATLAB

How to produce QPSK signal s(n) such that n = 1,2,...,256 in MATLAB with an average transmit power P = 1.

Any help in this regard will be highly appreciated.

Answer 1

[Nikhil Baishkiyar]

As can be observed from the various sample graphs in pskmod documentation, the generated symbols have a magnitude of 1. So unless you are using a different basis function than the typical sine/cosine, it should already be providing you with a signal with an average transmit power of 1.

To get a signal of length 256, you can code it like this:

Mod = 4;
N = 256;
x_n = randi([0 Mod-1],N,1);

s_n = pskmod(x_n,Mod,pi/Mod);

[charu shree]

Thank you so much sir for your response...