BBN code-Failed to set Tx frequency to 2.4G

GNU Radio
1

Hi

I’ve tried to use BBN code to transmit 802.11 packets by using RFX2400
dautherboard. When I run “bbn_80211b_tx.py” I get the following message:

Using TX d’board A: Flex 2400 Tx MIMO B

gr_fir_ccf: using SSE
spb: 8
interp: 32
Failed to set Tx frequency to 2.4G

I went through the code but I could not figure out what the problem
is. I found this message in mailing archive:

http://lists.gnu.org/archive/html/discuss-gnuradio/2007-07/msg00010.html

It seems that BBN codes doesnot work with MIMO dautherboards, has
anybody else had the same problem? Is there anybody who can run BBN
transmitter code using MIMO RFX2400 daughterboard?

regards,
hamed

2

“It seems that BBN codes doesnot work with MIMO dautherboards” ?

At least the rx path should work. I use the wireless card to generate
the
packet instead of using bbn tx path. In fact I don’t think I ever used
the
USRP to generate any well shaped .11b packets.

-Di

Mohammad Hamed F. wrote:

interp: 32

regards,
hamed

Discuss-gnuradio mailing list
[email protected]
Discuss-gnuradio Info Page

–
View this message in context:
http://www.nabble.com/BBN-code-Failed-to-set-Tx-frequency-to-2.4G-tp15077349p15080422.html
Sent from the GnuRadio mailing list archive at Nabble.com.

3

DiX schrieb am 2008-01-25 04:40:

“It seems that BBN codes doesnot work with MIMO dautherboards” ?

At least the rx path should work.

Mohammad Hamed F. wrote:

Hi

It seems that BBN codes doesnot work with MIMO dautherboards, has
anybody else had the same problem? Is there anybody who can run BBN
transmitter code using MIMO RFX2400 daughterboard?

Hello Di,

please do not write your answer over the text you quote. This is
contrary to human information reception: You want to get the question
first and then the answer, not the other way around.

Hackers like to get information in a way that is easy to gather, but
rather spend time in thinking about things and coding. You can help them
with good structured mails.

If you are unsure how to quote or if you need better reasons, have a
look at
http://www.netmeister.org/news/learn2quote.html

Thanks in advance.

Patrick

–
Engineers motto: cheap, good, fast: choose any two
Patrick S.
Student of Telematik, Techn. University Graz, Austria

4

DiX [email protected] writes:

Mohammad Hamed F. wrote:

I’ve tried to use BBN code to transmit 802.11 packets by using RFX2400
dautherboard. When I run “bbn_80211b_tx.py” I get the following message:

It seems that BBN codes doesnot work with MIMO dautherboards, has
anybody else had the same problem? Is there anybody who can run BBN
transmitter code using MIMO RFX2400 daughterboard?

At least the rx path should work. I use the wireless card to generate the
packet instead of using bbn tx path. In fact I don’t think I ever used the
USRP to generate any well shaped .11b packets.

Note that the USRP doesn’t really have enough bandwidth to create
well-formed 802.11 packets. The TX path never really worked.

As for receive, we didn’t have any MIMO boards. I would suspect that it
isn’t that hard to fix the code if it indeed doesn’t work.