Gnuradio controls the receiver side on the usrp inorder to receive data
centered around certain center frequency… and in doing that it sets 2
frequencies on the USRP one in the analog domain which is the center
frequency of the VCO running on the daughterBoard, and the other one in
digital domain inside the fpga which is the NCO frequency which is NCO
We need to know how does gnuradio control or map these two frequency ?
example if we want to receive data around 913 Mhz … what values will
loaded in the VCO frequency register and in NCO frequency register !!!
Objective : we need to make this desired frequency only dependant on the
frequency and independant on the the VCO frequency, so first we should
how gnuradio control these two values so that we could develop a method
make it only dependant on NCO frequency.
Thanks in advance.