Re: [Discuss-gnuradio] GRC 3.6 / 802.11 a/g test signal

[Bastian Bloessl]

Hi,

you can use gr-ieee802-11 [1] to generate WiFi frames. Just start the TX flow 
graph and pipe the output to a file.
I uploaded a frame (IQ data, no noise) [2] for you that you can use to get 
started.

I don’t use Matlab, so i don’t know how to import the data, but you can display 
the IQ samples with

od -fw8 frame.bin

There is also a GNU Radio script [3] that might be helpful.

Hope it helps,
Bastian


[1] https://github.com/bastibl/gr-ieee802-11
[2] https://www.ccs-labs.org/~bloessl/frame.bin
[3] 
https://github.com/gnuradio/gnuradio/blob/master/gr-utils/octave/read_complex_binary.m



On 02 Oct 2014, at 17:25, Ernest Szczepaniak <address@hidden> wrote:

> Greetings engi's!
> 
> I'm currently working on my masters (802.11 wlan receiver with
> MATLAB/USRPN210). After creating all the important stuff ie:
> 
> -symbol finder
> -time synchronization
> -coarse and fine frequency compensation
> -symbol demodulator
> -deinterleaver
> -Viterbi decoder
> -descrambler etc.
> -MAC layer decoding
> 
> i'm looking for any tested 802.11 a/g IQ signal for further research
> becouse live samples captured by USRP seem to have incorrect result's
> (wrong frame type MAC field, random MAC adress, CRC, parity bits etc).
> 
> And here comes my 1st question.
> 
> Is there any place where i can get some real, tested IQ wlan signal i
> a/g standard and full description (rate, coded data, adresses, included
> MAC fields)? Tried with Agilent Signal Studio but files are saved in
> .wfm encrypted format :(
> 
> I also found GRC beacon frames transmitter, written in GRC
> 
> http://rrsg.ee.uct.ac.za/members/jwamicha/gr-wlan.tar.gz
> 
> but due to having GRC 3.7 (where 'gnuradio-core' was repleaced with
> 'gnurdaio-runtime') i can't simply compile this file becouse of an
> error:
> 
> ---------------------------------------------------------------------------
> 
> checking for GNURADIO_CORE... configure: error: Package requirements
> (gnuradio-core >= 3) were not met:
> 
> No package 'gnuradio-core' found
> 
> Consider adjusting the PKG_CONFIG_PATH environment variable if you
> installed software in a non-standard prefix.
> 
> Alternatively, you may set the environment variables
> GNURADIO_CORE_CFLAGS
> and GNURADIO_CORE_LIBS to avoid the need to call pkg-config.
> 
> ---------------------------------------------------------------------------
> It seems that those binaries arent compatible with my GRC version :(
> 
> Any helpful guy to install this library and send me IQ signal of this
> beacon frame? (in any MATLAB readable format - simple file sink in GRC).
> 
> Looking forward for any reply.
> 
> Thanks
> 
> 
> _______________________________________________
> Discuss-gnuradio mailing list
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> 

--
Dipl.-Inform. Bastian Bloessl
Distributed Embedded Systems Group
University of Paderborn, Germany
http://www.ccs-labs.org/~bloessl/