[Discuss-gnuradio] Question on acquiring 802.11b signals

[Swapneel S. Ukhalkar]

I posted on a similar topic about two weeks ago but it really didn't 
help me. I am new to the world of GNU radio and have been fiddling with 
my USRP and RFX2400 daughterboard to acquire 802.11b signals. At this 
point, I just would like to take the fft of a chunk of spectrum so that 
I may see all of the wireless signals in the vicinity and their 
strengths (much like Eric Blossom did for the FM stations in Figure 3 of 
his "Listening to FM Radio in Software" article at 
http://www.linuxjournal.com/article/7505). I have been going over the 
basic FM receiver code in the GNU radio tutorials. I can see how easy it 
is to see different FM signals in a spectrum chunk. However, one of the 
things that I'm having trouble understanding is how each 802.11 signal 
is differentiated from one another (apart from the spectral mask). Could 
you give me some insight into what I have to do to acquire and display 
the appropriate signals. Maybe if I looked at the code which was used to 
generate Figure 3 in that article it might help. Thanks in advance.

--
Swapneel S. Ukhalkar
BSEE UC Santa Barbara
address@hidden