[Discuss-gnuradio] Bypassing the interpolation

[Cheaw Wen Guey]

Hi,

I think I may not be the first to ask this but here is my problem.

I am designing a radar receiver using a USRP2. My transmits and receives
are done in pulses. The problem is that I require 80MHz bandwidth and the
USRP2 can only reach 25MHz. I understand that this is due to to the
limitation of the GB ethernet. I would like to bypass the DDC and then
make it not real time to allow the data to be transmitted as I do not
require the system to be realtime.

My questions are:

1) Where should I be looking, in the VHDL or the USRP2 firmware to modify
to allow full bypass?

and

2) I am still trying to understand how to receive on time. Any examples to
refer to?


Cheaw Wen Guey
Research Officer