[Discuss-gnuradio] BBN 802.11 b (USRP2) - Energy in the 802.11 signal

[Juan Ramon Gutierrez Agullo]

Hi all

I'm trying to use the BBN transmitter (using the USRP2) in order to
receive 802.11 packets with an Atheros card (monitor mode). I've got the
last version code from svn (358). 

Looking at the readme file, from the 'examples' folder, it says that the
energy in the 802.11 signal is spread over 11 Mhz (at baseband) using an
11-chip Barker spreading code. It works fine under high SNR conditions,
but I would like to use the entire 11 MHz bandwidge to recover the
symbols (symbol rate of 802.11 bpsk and qpsk is only 1 Msymbols/second),
not only 8 MHz.

As the code is 'ported' from USRP to USRP2, I know that USRP1 has a 8
MHz of instantaneous RF bandwidth, and originally it was impossible to
use more than this bandwidth. With the USRP2, 25 MHz of instantaneous RF
bandwidth is available.

My problem is, I'm looking for the part of the code where the 802.11
signal is created and assigned to 8 MHz and I don't know where is it. 

Thank you for your help, 
 
-- 
Juan Ramon Gutierrez Agullo <address@hidden>