On Tue, Mar 4, 2008 at 1:27 PM, Manav Rohil <address@hidden> wrote:
thanks for the replies...
So that means if i dont have a USRP, i cannot simulate a packet
transmission/reception entirely in software since the data will never be
modulated to the carrier frequency.
No need for a USRP ... just simulation!
What is the alternative..Write a mixer block(using gr.multiply_cc) in
software and feed the data bits and a local oscillator to this?The
output of the mixer will then be the modulated signal at the carrier
frequency i want...And then I demodulate it using costas's receiver...
It depends on what you're trying to simulate. The RF hardware with
I/Q phase/DC imbalances? Just baseband distortions? Fading? Doppler
spread? Multipath? AWGN?
I recommend the book:
"Simulation of Communication Systems" ISBN 0-306-46267-2
It's heavy on the math, and it's really for advanced readers - but it
covers everything.
I believe there may be some channels implemented within GNU Radio
right now, but there hasn't been much discussion of using GNU Radio
strictly for simulation.
Hope this helps.