How to generate QPSK signal in MATLAB ?

Hello all,

I am trying to generate the QPSK signal in MATLAB with average transmit power of 1. I had got certain links that uses inbuilt "pskmod" function in MATLAB , but it do not include average transmit power of 1.

Any help in this regard will be highly appreciated.

Answer 1

[Akash]

Hi Chaaru,

When using the "pskmod" function in MATLAB, the generated symbols already have a magnitude of 1, assuming the use of standard sine/cosine basis functions. If you are using a different basis function, or if you wish to adjust the average power, you can simply scale the output of "pskmod" by the square root of the desired average power.

For more information, I recommend referring to the following MATLAB Answers post:

https://www.mathworks.com/matlabcentral/answers/1987044-related-to-qpsk-signal-in-matlab