Hi everyone,

I would like to implement baseband BPSK and QPSK modulations in MATLAB, in normal these type modulations include cosine and sine carrier signals but I have to do without carrier signals (baseband signal transmission). How can I implement these modulations without carriers? any idea?
Thanks for help!

 

Try google
https://www.rfwireless-world.com/Terminology/BPSK.html

 

Try google
https://www.rfwireless-world.com/Terminology/BPSK.html

I know BPSK and QPSK, I implemented these in MATLAB, I need to do baseband BPSK and QPSK.

 

I know BPSK and QPSK, I implemented these in MATLAB, I need to do baseband BPSK and QPSK.

So how can you change the phase of a baseband signal? You set the value of the bit at the beginning of the bit cell and make a transition to the opposite state in the middle of the bit cell.