idg101 wrote:
>
> Can anyone comment on their experiences with
> http://www.rfspace.com/RFSPACE/SDR-IQ.html vs any USRP that Ettus makes?
>
> Thanks,
> Isaac
>
>
Do this hardware support GNU Radio? Its good to utilize GNU Radio as the
community and support is very huge. the continuity of th
_ronaldo wrote:
>
> Dear Adib,
>
> Very good initiative! If you need some help, fell free to ask for.
>
> Regards,
>
> Ronaldo
>
> On Mon, Jun 27, 2011 at 9:43 AM, adib_sairi wrote:
>
> ___
> Discuss-g
Dear GNU Radio community,
I and my group had this tutorial/code walkthrough to share. we found out
that it is quite hard for beginner to start with GNU Radio, hopefully this
walkthrough explanation can help a bit.
this is the 1st version. please help us to improve by giving comment on any
mista
Adib,
No, I'm afraid I can't help you there. This was from when I was working on
my Ph.D. years ago at Virginia Tech and I no longer have access to the code.
Any papers I have can be found in IEEE Xplore or from the SDR Forum (now
Wireless Innovation Forum). I was also mostly interested in the d
Yang-56 wrote:
>
> Ah, I got it. I will look into that.
>
> Btw, generally speaking, how is the efficiency the spectrum sensing in gnu
> radio? I use the spectrum_sense.py to sense 9M a step and generate 256
> bins which takes me nearly 1 second to sense 1M. It is really slow...
> --
>
>
Dear Yang,
My master work is on this topic. I have a recent paper on this which as
below,
M. Adib Sarijari, Rozeha A. Rashid, N. Fisal, A. C. C. Lo, S. K. S. Yusof,
N. H. Mahalin.
http://trg.fke.utm.my/members/adib/publications/WWRF%202011-2(2).pdf Dynamic
Spectrum Access Using Cognitive Radio
Ben Wojtowicz wrote:
>
> Adib,
>
> I have started some LTE phy work. My long term plan is to develop it
> using
> GNU radio. However, most of it is currently in matlab and I need some LTE
> PHY test data in order to validate it. If anyone has any data
> (specifically
> recorded downlink I/Q
Dear all,
Is anybody know if there is any work on LTE or LTE-A using GNU Radio? is
there already any code for LTE phy layer on GNU Radio? please provide me any
information if there is one. thanks..
Adib
-
Mohd Adib Sarijari
Universiti Teknologi Malaysia
www.fke.utm.my
www.utm.my
--
View thi
the demodulation and modulation is done in GNU Radio. the raw digitized
signal from USRP will be proccessed by gnu radio either we want to
filtered, do FFT, demodulate and etc. all is done using GNU Radio.
USRP is the hardware to interfare the digital world with the analog world..
anil ph wro
Michael Dickens-3 wrote:
>
> Hi Raj - Alice Crohas' MS thesis sounds similar to yours. She used 2
> USRP1's, one doing RX-audio, and the other doing the RX-sample and the
> TX-audio. We discussed trying to do simultaneous RX/TX using the same
> daughtercard on a given USRP, or different
Matt Ettus wrote:
>
>
> This is due to truncation in the USRP. If you add 0.5 to the signal, it
> should go away.
>
> Matt
>
>
>
Dear Matt,
how and where does the truncation is done? is it in the FPGA (DDC) ?
regards,
Adib
-
Mohd Adib Sarijari
Universiti Teknologi Malaysia
www.fk
Matt Ettus wrote:
>
> Christian Schroeder wrote:
>> Hi together,
>>
>> we want to use the USRP2 with LFTX/LFRX boards to make transmissions
>> in a low frequency regime from below 1 kHz up to about roughly 50 kHz.
>> The daughterboard specifications give a frequency range from DC to 30
>> MH
Marcus D. Leech wrote:
>
>
> It averages the values in each of the bins.
>
> If your FFT is 1024 wide, then you essentially have 1024 single-pole IIR
> filters, each computing the
> low-pass filtered version of the individual bins. This is called (at
> by me) spectral averaging.
> There
Dear all,
I have a question regarding the usage of single_pole_iir_ff filter in the
fftsink_nongl.py which is used to construct the spectrum analyzer in
gnuradio-3.1.3. what is the usage of this iir filter since the alfa value is
equal to 1 which give the value of input the same as the value of th
John Orlando wrote:
>
>
> The DDCs are only used if the front-end RF can't tune to the exact
> frequency requested by the user. The DDCs are capable of doing a
> final digital mixing (from a low IF, typically) to center the
> bandwidth of interest at DC, but these aren't used with all
> daugh
Eric Blossom wrote:
>
>
> The IF == 0 Hz. The RFX boards produce quadrature analog which is
> then digitized using two ADC's, one for I and one for Q.
>
> Eric
>
>
thanks for the fast response Eric =) but in the documentation by firas abbas
in page 9 (http://rapidshare.com/files/121692530
Mrudula Karve wrote:
>
> I am using RFX2400 daughter board with USRP2.
> I read on one of the discussion-threads that RFX2400 down-converts to
> 10Mhz;
>
about the IF of rfx2400, by referring to the diagram in
http://gnuradio.org/redmine/wiki/gnuradio/UsrpRfxDiagrams i think it is
20Mhz if i
adib_sairi wrote:
>
>
>
> TMob wrote:
>>
>> Hi,
>>
>> I am currently trying to use the USRP to sense the 802.11 channels for
>> activity. So far, I am using the usrp_spectrum_sense to do this. Each
>> time I get the callback from gr.bin_stat
TMob wrote:
>
> Hi,
>
> I am currently trying to use the USRP to sense the 802.11 channels for
> activity. So far, I am using the usrp_spectrum_sense to do this. Each time
> I get the callback from gr.bin_statistics_f, I calculate the signal power
> in the returned data vector using the follow
Muhammad Rizwan-3 wrote:
>
> Hello,
> I have a couple of (in fact more than that) questions, kindly answer
> them asap:
> How to use the option of --from-file in benchmark_tx.py?
> I am using USRP1, gnuradio3.2.1 and RFX2400. Secondly how to use --log
> option in benchmark_rx.py? From where the
adib_sairi wrote:
>
> Dear All,
>
> one time ago there is a GNU Radio Europe if i am not www.gnuradio.nl forum
> available. but today i try to access it and unfortunately i find out that
> is is not available anymore. did any one know what is happening?
>
> I a
Dear All,
one time ago there is a GNU Radio Europe if i am not www.gnuradio.nl forum
available. but today i try to access it and unfortunately i find out that is
is not available anymore. did any one know what is happening?
I am looking for anybody in Netherlands that is using GNU Radio. I would
you don't have to write a complex script. use the usrp_fft as your starting
point. understand it and edit where needed. you don't even have to write a
new processing block =) good luck.
schuler101 wrote:
>
> Thanks for reply. I had one more question, if I was just monitoring the
> usage of chan
Tom Rondeau wrote:
>
> 2010/2/10 Li Mei-Wen :
>>
>> Hi:
>>
>> Why the benchmark_rx.py always can not receive the last one packet?
>> Have any way to solve it?
>>
>>
>> Best Regards.
>>
>> Mei-Wen Li (Emily)
>> National Cheng-Kung University Dept. of
>> Computer Science and Information Engineer
there is some work from Thomas Schmid which modulate and demodulate O-QPSK
which mean for IEEE802.15.4 standard.. you can search and download the code
online. good luck..
Adib
Timothy Lawrence Sitorus wrote:
>
> HI all,
>
> Please anyone help me.
>
> Is there anyone succeeded to modulate qps
Firas A. wrote:
>
>
> Important Note:
> Beside tunning time depends on the hardware (RF syenthesizer speed),
> one should remameber that the time needed to collect 1024 samples
> with decimation rate=8 (minimum USRP decimation) is 128 usec
>
> while :
>
> Time needed to collect 1024 samples
Matt Ettus wrote:
>
>
>
> At long last, the WBX is now available. It covers 50 MHz to 2.2 GHz.
> The introductory price is $400 which includes an LNA/filter board and an
> MCX to SMA-bulkhead cable.
>
> After the initial batch is gone, the price will be changing to $450 to
> reflect the
Matt Ettus wrote:
>
> Nirali Patel wrote:
>> Matt,
>>
>> Is the TVRX daughter board expected to change anytime in near future?
>
>
> No
>
>
> Matt
>
>
is there any tv band transmitter daugterboard for USPR? and may i know why
there is currently only receiver is available for the TV band
Good day,
I never run the OpenBTS before but i had experience in running multiple USRP
on one PC. for example if i want to run usrp_fft.py and the benchmark_tx.py
at the same time using two USRP and one PC, so this is the example of the
command:
1st terminal: ./benchmark_tx.py -f 2.4G -w 0
2nd t
Dear All,
I am exploring the fftsink_nongl.py file because i want to modify it to be
the sensing method of my project. in the fft_sink_c class, there is a signal
processing block call keep_one_in_n. I think that this block is use to
slowing down the sampling of the spectrum sense, am I correct? if
Li Mei-Wen wrote:
>
>
> Hi:
>
>
>
> I can't run the ./tx_voice.py or benchmark_rx.py in
> /usr/src/gnuradio/gnuradio-examples/python/digital
> In fact, I can't run anything in /.../diital.
>
> If I do, I will got error message, like follows.
>
> But I can run ./benchmark_rx.py in /.../d
besides my last two post (which unfortunately i still don't have any answer)
, i have another question.. any help will be very appreciated.
if we transmit using benchmark_tx.py, we can change the amplitude of the
transmission by changing the --tx-Amplitude and this parameter max value is
9830.1
Robert and Millie wrote:
>
> This the error I received when testing the GNU Radio installation after
> the make file finished running.
> I have Boost 1.38 loaded along with GNU Radio version 3.2 and wxPython
> version 2.8.10.1. All the paths have been setup.
>
> $ python dial_tone.py
> Trac
nansai hu wrote:
>
> When run a python script file, as we know main function will be run first.
> We send the class to a object "tb",for instance. Then we have two ways to
> let the program run.
> One is call tb.run() function,and other is call tb.start() function.Could
> somebody told me the d
Dear All,
As i being experimenting with USRP and GNU Radio, i notice that some of the
last packet of my data that i receive is keep inside the USB buffer. this
data will be flush out to my PC only if i transmit (receive) new data. i
believe that this is due to the minimum byte data needed by the U
adib_sairi wrote:
>
>
> Good day every one,
> I am trying to calculate the sensing time for my system with using
> usrp_fft.py as the core of my sensing method. my fft bin is 256 with Fusb
> = 4MHz and my bandwidth is 1MHz.
>
> with this parameters, each sample of
Firas A. wrote:
>
>
> Hi,
>
>
> --- On Sat, 7/11/09, adib_sairi wrote:
>> so if the bin of fft is treated as individual, what is the relationship >
>> between fft_size and the db calculation? what is the usage of fft_size
>> in the calculation?
>
Eric Blossom wrote:
>
> On Tue, Aug 18, 2009 at 01:30:18AM -0700, adib_sairi wrote:
>>
>>
>> Matt Ettus wrote:
>> >
>> >
>> > The Flex2400 board, which was released this week covers 2300-2700 MHz.
>> > There is a filter on board w
Matt Ettus wrote:
>
>
> The Flex2400 board, which was released this week covers 2300-2700 MHz.
> There is a filter on board which covers the ISM band (2400-2483 MHz),
> but it can be bypassed easily, giving coverage to the full 2300-2700 MHz
> band. The additional bands covered include satell
Yan Wang wrote:
>
> Hi,
> Basically I want to do following things on one usrp node.
> 1. receive packets from one other node
> 2. relay the packets received
> 3. transmit packets generated locally
>
> So my idea is to get the packets through usrp_src and receive_path, then
> put
> the receive
Jonathan Coveney-2 wrote:
>
> Howdy,
>
> I want to better understand certain blocks... such as what the parameters
> of
> optfir.low_pass actually specify, how it's implemented, that sort of
> thing.
> But the gnuradio filetree is next to impossible to traverse.
>
> I have been pointed here
>
adib_sairi wrote:
>
> thank you Tom. I had run the usrp_display.py inside the gr-qtgui, it was
> very interesting. I see that you doesn't use the wxpyton any more and you
> use the qtgui isn't it?
>
> but I cannot find where it do the inserting data for plotting
Tom Rondeau wrote:
>
>
> The coupling of the flow graph and the Wx architecture was one of my
> motivations for writing the gr-qtgui. You should be able to "from
> gnuradio.qtgui import qtgui" then drop a sink (qtgui.sink_c(args)) and
> connect the signal block you want to observe to this si
Ali Siddiqi wrote:
>
> Hi all,
> I looked at fftsink_gl.py. It couldnt be executed because of import error
> of
> fft_window. Also, if in case I manage
> to run it, still I am finding it difficult to incoporate it in
> benchmark_tx.py. Can someone elaborate a bit more on how to add FFT sink
> in
Sriram Krishnan-3 wrote:
>
> Hi,
> I am trying to write an application which senses spectrum
> (usrp_spectrum_sense.py) and transmits/receives signals. I have the
> tx/rx working fine. But when i add another flow graph(3rd one to
> existing tx and rx) for the spectrum sense,to the top block
i think it is because of your python code.. your code somewhere are miss
indent i think i.e maybe you just miss push the space bar or some thing like
that. check back on the error which line is the error take place and check
the indentation on that line..
Adib
bari wrote:
>
> when Iam running
thank you very much firas.. I have another Question regarding the
usrp_fft.py, what is the effect of the average option? is it only average on
the display of the graph only or is it on the value of the power receive?
how much sample it use to do the averaging?
Adib
--
View this message in cont
Ali Siddiqi wrote:
>
> Hi all,
> I looked at fftsink_gl.py. It couldnt be executed because of import error
> of
> fft_window. Also, if in case I manage
> to run it, still I am finding it difficult to incoporate it in
> benchmark_tx.py. Can someone elaborate a bit more on how to add FFT sink
> in
thank you firas for the explanation..
Firas A. wrote:
>
>
> So, what is the factors that effect dB conversion?. The first value is the
> FFT size, so that when we change the FFT size, the formula should
> compensate for this. Second we should compensate for the taps of the
> window used for FF
one more question, if the y-axis is in dB so this picture show the reading of
around -42dB.. this reading is taken without any transmission in 2.5G
channel which mean it is the reading of noise level. so isn't -42dB is very
high for noise? thanks
http://www.nabble.com/file/p24440598/noise%2Bpower
Good day to all,
i have some question regarding the y-axis in usrp_fft.py.. it is labeled
in unit dB. so how does it convert from ADC value to dB? the output from
after c2mag block we got the magnitude value of the power isn't it? so how
does from the ADC value it convert to the power? what is
Jordan J Riggs wrote:
>
> What do you mean by "signal propagation study"? Can you be more specific?
>
> Jordan
>
> On Mon, Jul 6, 2009 at 1:19 AM, adib_sairi wrote:
>
>>
>> Hi everyone,
>> Is there any signal propagation study being done
adib_sairi wrote:
>
> Hi everyone,
> Is there any signal propagation study being done on USRP and GNU Radio
> SDR? is there any graph, data or analysis? what is the minimum power (dBm)
> that the receiver require to receive the data correctly? if there is non,
> i am planin
Hi everyone,
Is there any signal propagation study being done on USRP and GNU Radio
SDR? is there any graph, data or analysis? what is the minimum power (dBm)
that the receiver require to receive the data correctly? if there is non, i
am planing to do experiment on all this issue.. thank you.
A
Jesper M. Kristensen wrote:
>
> Hello
>
> Allow me to ask whether someone knows about the delay of the RX and TX DSP
> chains from the input of a LFRX daughterboard to the output of the DSP
> chain
> i.e input to the RX buffer and vice versa in the TX chain?
> I'm interested in the delay at a d
gr_plot_xxx.py seams to need a lot of dependencies that is not stated in the
gnu radio installation note such as mathplotlib, SciPy and others.can any
one please help me list all the dependencies that required for the
gr_plot_xxx?
--
View this message in context:
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good day,
i try to run gr_plot_ofdm.py in ofdm example but unfortunately it does not
success. i am using fedora 9.. at first it tell me that i dosen't have the
mathplotlib.. so i try to install the mathplotlib..
since mathplotlib required numpy v1.1 and higher (yum install in fedora 9
can upd
Mir Ali-4 wrote:
>
> Yeah, I got it. I read in a tutorial and I understand now.
>
>
>
hi Ali,
what tutorial do you read for this? hope it will be useful to others
especially to me =) tQ
Adib
--
View this message in context:
http://www.nabble.com/Intermediate-frequency-question-tp235141
adib_sairi wrote:
>
>
>
> thanks Eric.. now i am trying to install from the trunk (revision 10978).
> i am using fedora 9. ./bootstrap command was success but ./configure give
> me an error. it tell be that i dont have the boost package. I think i had
> install the bo
Martin Braun-3 wrote:
>
>
> Assuming you understand the theory behind OFDM in general, a good place
> to look is gnuradio-examples/python/ofdm/benchmark* code. You can run
> the examples with a flag '--log', which will dump the streams after most
> intermediate steps into separate .dat-files fo
Eric Blossom wrote:
>
>
>
> If you mean that you have local changes that are based on the 3.1.3
> tarball, then the most straight-forward way to handle this is to
> generate a "diff -u" between the unmodified 3.1.3 source and your
> modified source, then apply that difference to a virgin copy
Michael Dickens-3 wrote:
>
>> Sounds like an interesting paper but the website requires a Notre
>> Dame password to download the file.
>
> I apologize; I didn't realize that website was password protected (it
> didn't ask me ;) Here's another:
>
> < http://www.nd.edu/~jnl/pubs/crohas-ms-
i have some Question.. in the http://gnuradio.org/trac/wiki/UsrpFAQ/Latency
it state that the data from usrp to usb will be send only if it is more than
512byte right? so what happen if my data is less?
i try to send data using benchmark_tx and benchmark_rx.. most of the data at
the back of my p
Eric Blossom wrote:
>
>
> There is no documentation of that type for OFDM.
>
> Eric
>
>
if i want to reconfigure the modulation for each sub-carrier (bit loading
for OFDM), can i just edit the ofdm benchmark python file? or i have to go
in detail until the IFFT and FFT? the OFDM that GNU R
Thank you Martin. but is there any detail on how OFDM in GNU Radio is
constructed like the documentation for FM recv ..in FM recv they explain
detail on how they construct the code.. what is the reson for each line and
what references that they used.. so in OFDM GNU Radio is there any
documentatio
Hi every one,
i would like to know how the OFDM Library in GNU Radio is being constructed?
what is the theory? can any body help me? Thank you very much..
adib
--
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Sent from the GnuRadio mailing li
Blossom wrote:
>
> On Mon, Feb 02, 2009 at 06:53:32PM -0800, adib_sairi wrote:
>>
>>
>> oh ok.. so do i need to copy the whole trunk to run the example? or do i
>> need to copy the whole library (rev @9989)?
>
> $ svn co http://gnura
oh ok.. so do i need to copy the whole trunk to run the example? or do i
need to copy the whole library (rev @9989)?
Eric Blossom wrote:
>
> On Fri, Jan 30, 2009 at 06:52:24AM -0800, adib_sairi wrote:
>>
>> hi,
>> i would like to try the OFDM examp
hi,
i would like to try the OFDM example but i cannot find the
benchmark_ofdm_tx.py and benchmark_ofdm_rx.py file in
/gnuradio-example/python/digital. did i search it in the wrong place or did
the file being remove from the gnuradio-3.1.3.tar ?
trondeau wrote:
>
> For anyone working with the
just assemble where the hardware fit =) and if you want the instruction there
ase some inside the GNU radio package (in the USRP folder) .. gudluck..
Markus Feldmann wrote:
>
> Hi All,
>
> i am asking for help to get my USRP correctly
> assembled.
> I fear to damage my USRP.
> In my USRP packa
..
adib_sairi wrote:
>
> hi,
> I am experimenting on sending and receiving stream of data using USRP
> and GNU Radio.. i try sending 100 byte of data and i discover that 40-10
> byte of my last data was not successfully receive by my receiver. do any
> one know why this is happened?
hi,
i think you could use the benchmark_rx.py and benchmark_tx.py example..
modify a bit some code inside there (modify the data that the code send) and
you will be able to send whatever string you want =) good luck.
regards,
Adib
Joreen Tan wrote:
>
>
> Hi,
>
> Is there a simple program tha
hi,
I am experimenting on sending and receiving stream of data using USRP and
GNU Radio.. i try sending 100 byte of data and i discover that 40-10 byte of
my last data was not successfully receive by my receiver. do any one know
why this is happened?
is it because of the GNU Radio buffer that r
i think you can modify the benchmark_tx.py code for transmitter and
benchmark_rx.py for receiver for this application :-)
Dumezie Maduike wrote:
>
> Hello everyone,
>
>
>
> Is there a python script available in Gnu Radio in which you can supply at
> the input line a bunch of binary "1's" and
hi,
i also try to search for send_pkt() function..could any one tell me where
to find this function in GNU radio package? i think it is on C++ code isn't
it?but when i search in the CLASS list on
http://gnuradio.org/trac/browser/gnuradio/trunk i couldn't find any..or
maybe i miss it? please help
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