W dniu 12.10.2017 o 11:29, Rensi Mathew pisze:
>
> I am working with the airprobe_uhd.grc file in the page
> https://sourceforge.isae.fr/projects/ralf/wiki/GSM_receiver_with_gr-gsm_and_Wireshark.
>
> I am running the |gnuradio-companion| in Ubuntu 16.04 and my source is
> USRP B200 SDR. When I am r
I am working with the airprobe_uhd.grc file in the page
https://sourceforge.isae.fr/projects/ralf/wiki/GSM_receiver_with_gr-gsm_and_Wireshark.
I am running the gnuradio-companion in Ubuntu 16.04 and my source is USRP B200
SDR.When I am running the grc file, an error occurs.
ImportError: lib
r'
Cc: 'discuss-gnuradio@gnu.org'
Subject: RE: [Discuss-gnuradio] GSM
Importance: High
Hi There,
Thanks.
The antenna is telescopic antenna with 3.2 dBi ( 300 - 1100 MHz ).
Let me try again to set RF Again.
Regards
Srinivasan T
From: discuss-gnuradio-b
Marcus Müller
Sent: Tuesday, 9 February 2016 5:37 PM
To: discuss-gnuradio@gnu.org
Subject: Re: [Discuss-gnuradio] GSM
Dear Srinivasan,
There's no error in the picture, just a warning that certain buffer types
won't be available. That's not a problem.
Also, could you try to use
Dear Srinivasan,
There's no error in the picture, just a warning that certain buffer
types won't be available. That's not a problem.
Also, could you try to use your Operating Systems "screenshot"
functionality next time instead of sending a picture snapped with a
camera? Also, for text messages,
Dear All,
I use HackRF one with telescopic antenna.
I used gr-gsm to see GSM packets but I am not able to.
I got following error :
http://imgur.com/U3egNra
Attached the video scanning of GSM in Singapore.
https://sendvid.com/gxjm5yrb
Please advise me.
Regards
Srinivasan T
Alexander Chemeris wrote:
>
> Hi,
>
> This doesn't look like a GSM signal. There some pictures of GSM spectrum
> captured with USRP on the internet. I don't have a link near my hands, but
> you can probably google them easily.
>
You are probably right. I found signals that look better:
http://
On Tue, Jun 7, 2011 at 3:28 AM, Paul Lambert wrote:
> Hello list,
>
> I'm having a lot of trouble here while trying to make openBTS work with my
> USRP1
> to play with GSMs.
This question belongs on the OpenBTS list.
> First of all, a little description of my setup:
> Software:
> openbts-2.6.0M
On Tue, Jun 7, 2011 at 2:02 PM, Marcus D. Leech wrote:
> This isn't really the correct mailing list for OpenBTS questions, but I
> have a couple of suggestions:
I wasn't sure it's a an openBTS question... as I said I don't know
where I should look first since I tried so much.
>
> o what happen
>
> Hello list,
>
> I'm having a lot of trouble here while trying to make openBTS work with my
> USRP1
> to play with GSMs.
> First of all, a little description of my setup:
> Software:
> openbts-2.6.0Mamou
> gnuradio v3.4.0git-130-g207a2ae7
> UHD from git
> OS: ubuntu 11.04
>
> # sudo lsusrp
> US
Hello list,
I'm having a lot of trouble here while trying to make openBTS work with my USRP1
to play with GSMs.
First of all, a little description of my setup:
Software:
openbts-2.6.0Mamou
gnuradio v3.4.0git-130-g207a2ae7
UHD from git
OS: ubuntu 11.04
# sudo lsusrp
USRP 0 serial number 4c76a203
Hi,
This doesn't look like a GSM signal. There some pictures of GSM spectrum
captured with USRP on the internet. I don't have a link near my hands, but
you can probably google them easily.
Regards,
Alexander Chemeris.
On Jun 3, 2011 4:21 AM, "TheOperator" wrote:
>
>
> Ben Wojtowicz wrote:
>> Are
Ben Wojtowicz wrote:
> Are you saying that you are seeing 4MHz wide signals? Or are you seeing
> ~200KHz wide signals seperated by 4MHz?I see about 200kHz wide signals
> spaced 4MHz.
Ben Wojtowicz wrote:
> If you are seeing ~200KHz wide signals spaced by 4MHz, these most likely
> are
> GSM sig
You might also try playing with kalibrate
http://thre.at/kalibrate
it will scan for GSM base stations and use the results to determine
the current local frequency error in your USRP. If you have an
independent means of determining this error frequency, and compare
this with the results of kalib
Operator,
Are you saying that you are seeing 4MHz wide signals? Or are you seeing
~200KHz wide signals seperated by 4MHz?
If you are seeing 4MHz wide signals, they are not GSM. There is most likely
another technology being transmitted.
If you are seeing ~200KHz wide signals spaced by 4MHz, the
Hi,
I am using the USRP board with the DBSRX daughter board.
According to my knowledge, the swiss GSM 900 frequency band consists of
channels at an interval of 200kHz. However, when I build a simple system
with an USRP source and a FFT sink and analyze the spectrum around 900MHz, I
only see peak
Hi everybody I'm trying to find a frequency correction burst of gsm.
This Burst is due to GMSK Modulation 67,7 kHz obove the carrier and
unmodulated.
I've got an older Nokia cell phone with some monitoring software where I can
read out the arfcns the phone sees and thus the frequencies of the BCCH
On Thu, Nov 19, 2009 at 5:00 PM, wrote:
> 12. Re: GSM Handset Emulation (John Gilmore)
> Message: 12
> Date: Wed, 18 Nov 2009 22:08:21 -0800
> From: John Gilmore
> Subject: Re: [Discuss-gnuradio] GSM Handset Emulation
> To: Isaac Gerg
> Cc: Discuss-gnuradio
Hi,
On Thu, Nov 19, 2009 at 09:08, John Gilmore wrote:
>> Now that there is a functional basestation available for GSM, I was
>> wondering if anyone is trying to build software for a GSM handset. This
>> way, I could use my laptop (e.g. in a manner similar to skype) to talk with
>> folks when I
Achilleas Anastasopoulos wrote:
> Where is the functional base station for GSM available?
http://openbts.sourceforge.net/
Sylvain
___
Discuss-gnuradio mailing list
Discuss-gnuradio@gnu.org
http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Where is the functional base station for GSM available?
thanks
Achilleas
___
Discuss-gnuradio mailing list
Discuss-gnuradio@gnu.org
http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
> Now that there is a functional basestation available for GSM, I was
> wondering if anyone is trying to build software for a GSM handset. This
> way, I could use my laptop (e.g. in a manner similar to skype) to talk with
> folks when I don't have a GSM phone handy.
It wouldn't be very convenient
Isaac Gerg wrote:
> Now that there is a functional basestation available for GSM, I was
> wondering if anyone is trying to build software for a GSM handset. This
> way, I could use my laptop (e.g. in a manner similar to skype) to talk
> with folks when I don't have a GSM phone handy.
No one is wo
Now that there is a functional basestation available for GSM, I was
wondering if anyone is trying to build software for a GSM handset. This
way, I could use my laptop (e.g. in a manner similar to skype) to talk with
folks when I don't have a GSM phone handy.
___
Someone posted to the list asking about GSM/gnuradio. Came across a
project when researching some other stuff (related to FPGA).
This might be of interest.
http://wiki.thc.org/gsm
--
Charles N Wyble (818) 280-7059
http://charlesnw.blogspot.com
___
My question to all of you responding on this question then is: How do I
convert the amplitudes of my GMSK signal to probabilities for viterbi based
demodulation?
Isaac
Steven Clark-2 wrote:
>
> On Thu, Jun 5, 2008 at 7:45 AM, isaacgerg <[EMAIL PROTECTED]> wrote:
>>
>> Hi,
>> Concerning GSM
gt; [mailto:discuss-gnuradio-bounces+jplong
> [EMAIL PROTECTED] On Behalf Of
> Steven Clark
> Sent: Friday, June 06, 2008 10:58 AM
> To: Ben Wojtowicz
> Cc: Discuss-gnuradio@gnu.org
> Subject: Re: [Discuss-gnuradio] gsm gmsk demodulation
>
> > On 6/6/08, Bob McGwier <[
towicz
Cc: Discuss-gnuradio@gnu.org
Subject: Re: [Discuss-gnuradio] gsm gmsk demodulation
> On 6/6/08, Bob McGwier <[EMAIL PROTECTED]> wrote:
>>
>> This is not my professional experience. The sounding data is used
to find
>> the channel and then the data symbols are soft
> On 6/6/08, Bob McGwier <[EMAIL PROTECTED]> wrote:
>>
>> This is not my professional experience. The sounding data is used to find
>> the channel and then the data symbols are soft detected through a "viterbi
>> equalizer" in every implementation I am aware of that is any good at all
>> with the
I agree with Bob, most gsm demodulators I have seen use a viterbi equalizer
(sometimes called MLSE equalization).
Ben
On 6/6/08, Bob McGwier <[EMAIL PROTECTED]> wrote:
>
> This is not my professional experience. The sounding data is used to find
> the channel and then the data symbols are soft
This is not my professional experience. The sounding data is used to
find the channel and then the data symbols are soft detected through a
"viterbi equalizer" in every implementation I am aware of that is any
good at all with the exception of one I wrote several years ago which
estimates the
Steven,
That is totally rockin'; thanks!
Isaac
Steven Clark-2 wrote:
>
> On Thu, Jun 5, 2008 at 7:45 AM, isaacgerg <[EMAIL PROTECTED]> wrote:
>>
>> Hi,
>> Concerning GSM GMSK demodulation, due to the ISI, I initially thought
>> many
>> folks were using the Viterbi algorithm on the waveform
On Thu, Jun 5, 2008 at 7:45 AM, isaacgerg <[EMAIL PROTECTED]> wrote:
>
> Hi,
> Concerning GSM GMSK demodulation, due to the ISI, I initially thought many
> folks were using the Viterbi algorithm on the waveform to demodulate it
> properly. After doing some lit review, I am finding that this is no
Hi,
Concerning GSM GMSK demodulation, due to the ISI, I initially thought many
folks were using the Viterbi algorithm on the waveform to demodulate it
properly. After doing some lit review, I am finding that this is not the
case and that when most folks talk about Viterbi concerning GSM GMSK
de
On Thu, May 01, 2008 at 11:54:15AM +, steve wrote:
> Hi,
>
> We are trying to understand how to implement GSM channel hopping using
> the USRP1.
>
> Reading the docs and specs I think there might be a way of doing it without
> any fpga modification. Comments are welcome if there is a mistake
Hi,
We are trying to understand how to implement GSM channel hopping using
the USRP1.
Reading the docs and specs I think there might be a way of doing it without
any fpga modification. Comments are welcome if there is a mistake in my
thinking.
Inband-Signaling gives us very precise timestamps on
> Actually, assuming that you want your Tx coordinated
with the Rx,
> you'll need the not-yet-written code for precise
timing synchronization.
Actually, I am more interested in getting two Tx
signals synchronized. One would be to simulate the
BTS and the other the MS.
Sharmila
__
On Wed, Jan 10, 2007 at 03:20:33PM -0800, Sharmila Kannangara wrote:
> Hello,
>
> I would like to use the USRP to generate some GSM BTS
> transmit signals in the Cellular and PCS bands.
>
> Has anyone tried to do this? I see a lot of postings
> for receiving GSM signals but nothing about
> trans
Hello,
I would like to use the USRP to generate some GSM BTS
transmit signals in the Cellular and PCS bands.
Has anyone tried to do this? I see a lot of postings
for receiving GSM signals but nothing about
transmitting them. Are there any issues with using
the USRP for this type of application?
On Thu, Sep 07, 2006 at 12:52:23PM -0700, JoePub wrote:
>
> Hi All,
>
> Appologies about the re-post, but the original post wasn't submitted to the
> maililing list.
>
> I have been looking at the USRB for a work project in implementing a
> softphone. What are other peoples opinions of using th
Hi All,
Appologies about the re-post, but the original post wasn't submitted to the
maililing list.
I have been looking at the USRB for a work project in implementing a
softphone. What are other peoples opinions of using the USRB for developing
a software based GSM cell phone. The reason I ask
hello list,
Is there any example available for doing gsm cellphone detection, or even cell
detection?
I am thinking of the uk malls people flow monitoring presented in the article
on wired, even though my need would be more in the rescue activity on the field.
Regards
Matteo iz2eeq
_
Hello,
I am looking for open source GSM baseband
implementations and havent yet found any. I guess GNU
Radio would be an ideal hardware plaftform for such an
implementation. Before studying it in more detail, has
it been tried before or is there any such ongoing
effort?
Thanks,
Rajiv.
http://wi
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