Power measurement with USRP2 and XCVR2450 (units issue)


I’m a newbie GNU Radio student, and I’m trying to measure the received
signal power with an USRP2(using XCVR2450 as daughterboard and VERT2450
Setting up an ad-hoc network with two computers and using a third one
running the GNU Radio flowgraph, I intend to
detect the channel usage with the USRP2 while one computer is sending
continuous PING messages to the other computer.
To reach this goal, I designed the following graph:

[USRP2 source(f=5.2GHz,decimation=16, gain=46dB)]–>[Head(1024)]–>[FFT
filter(taps=1024,decimation=16)]–>[Complex to Mag^2]–>[Number Sink]

  1. The output of Complex to Mag^2 block, what is the data format (Watts,
    mW, dBm, dB)?

  2. Why the gain parameter of USRP2 source block is between 0 and 92?
    What’s the influence of this value to the measurements?

Thank you for your help.

This forum is not affiliated to the Ruby language, Ruby on Rails framework, nor any Ruby applications discussed here.

| Privacy Policy | Terms of Service | Remote Ruby Jobs