Hi everyone,
as you might remember, FOSDEM '14 is having a dedicated SDR track for
the first time. Despite being new and all, we managed to get a full
speaker lineup ready before the first deadline was over.
The schedule is available on the FOSDEM website:
https://fosdem.org/2014/schedule/track/s
On Thu, Dec 12, 2013 at 08:27:19PM +0800, ZaInzAiN Jj wrote:
> This is OFDM transmitter grc file
>
>
> On Thursday, December 12, 2013 7:22 PM, ZaInzAiN Jj
> wrote:
> Dear all,
> In OFDM transmitter example there is "Stream to Tagged Stream" block with
> packet length value 96. What it's mean
On Thu, Dec 12, 2013 at 03:54:29PM +0500, Maria Stevens wrote:
> So, Only case 1 is working for me. I am not using any custom gnuradio-block in
> my receiver. Major blocks in my demodulator chain consists of FIR filters,
> gr_pfb_clock_sync_ccf and packet decoder along with some adders subtractors
On Wed, Dec 11, 2013 at 04:15:11PM -0700, Henry Jin wrote:
> I tried to use digital_bert_tx.py and digital_bert_rx.py to test the BER
> performance of different modulations. The command I use is
> ./digital_bert_tx.py
> --tx-freq=5.1e9 --tx-gain=30 -S 8 --mod-code=gray -m bpsk. The results for
>
On Wed, Dec 11, 2013 at 06:52:30PM -0500, Marcus Leech wrote:
> >Just for fun I uninstalled everything and tried installing with
> >pybombs. However when it got to the step which builds
> >filter_swigPYTHON_wrap there was an issue:
> >
> >[ 78%] Building CXX object
> >gr-filter/swig/CMakeFiles/_fil
On Mon, Dec 09, 2013 at 10:15:06AM +0100, alex wrote:
> I want to move my out of tree model from gnuradio 3.6.5 to 3.7.0. I
> follow the introduction about how to move from 3.6 to 3.7. The code
> is able to build. However when I running the python script, still
> meet the importerror as follow:
>
On Mon, Dec 09, 2013 at 03:10:49AM -0800, bieniu wrote:
> Martin Braun (CEL) wrote
> > Given an E_b of 1, what is the noise *voltage* (i.e. the expected
> > amplitude of the AWGN process) that will cause an E_b / N_0 of x, if E_b
> > / N_0 is given in dB?
> > If you
On Sat, Dec 07, 2013 at 02:26:18PM +0100, bie...@student.agh.edu.pl wrote:
> Could you explain how the converting the EbNo value to the noise
> voltage in the following example is done?
> http://gnuradio.org/redmine/projects/gnuradio/repository/entry/gr-digital/examples/berawgn.py
>
> I can see th
On Sat, Dec 07, 2013 at 08:39:57PM -0800, Jacob Dickinson wrote:
> I then uninstalled 3.7.2.1 and installed 3.7.1.1 from the binary
> package (gnuradio_3.7.1.1_Ubuntu-13.10-x86_64.deb). Now gnuradio
> itself works, but when I installed the gr-osmosdr package following
> instructions on the osmocom
On Sat, Dec 07, 2013 at 08:40:45PM -0500, James Austin wrote:
> I'm a long time Windows programmer trying to write a gnuradio module to
> improve
> my Linux development skills.
>
> I created a gnuradio module following the tutorial that just sends dummy data
> back to gnuradio. That works fine, I
On Fri, Dec 06, 2013 at 09:30:13PM -0800, John Blommers wrote:
> As an enhancement to gnuradio-companion, might this feature be added to the
> would-be-nice list please?
John,
you can edit the wiki page yourself. If you feel like this is something
you'd like to code yourself, put your name behind
Hi everyone,
the call is live on:
https://www.youtube.com/watch?v=FeeDnyM5tSM#t=656
You can join through the G+ community page.
MB
--
Karlsruhe Institute of Technology (KIT)
Communications Engineering Lab (CEL)
Dipl.-Ing. Martin Braun
Research Associate
Kaiserstraße 12
Building 05.01
76131 K
On Thu, Dec 05, 2013 at 06:47:16PM +0800, Damon wrote:
> When I was running benchmark example in gr-digital/examples/narrowband,
> all packets may lose. The environment is shown below.
> Hardware: USRP N210 with WBX
> Software: GNU Radio v3.7.2.1-62-g6195ff3c and UHD_003.006.000-0-g58f4af97
>
> Th
On Thu, Dec 05, 2013 at 02:05:31AM -0800, Artem Pisarenko wrote:
> Btw, this restriction frustrating. Someone would like to make useful graph
> containing both audio source and sink in single chain, but it's impossible
> due to current GNU Radio design.
It's not impossible. The very first thing I
On Wed, Dec 04, 2013 at 12:23:24PM +0200, Stefan Gofferje wrote:
> On 12/04/2013 12:03 PM, Martin Braun (CEL) wrote:
> > Also remember, this thread isn't only for your benefit, but for others
> > with similar problems who might read this now or find it in the archives
> &g
On Wed, Dec 04, 2013 at 01:18:56PM +0200, Stefan Gofferje wrote:
> so I got gnuradio basically running and started to experiment. 2 things,
> I noticed:
>
> 1.) The waterfall display in the QT GUI sink seems to be about twice as
> fast as the standalone QT GUI Waterfall sink. That's nothing bad bu
On Wed, Dec 04, 2013 at 11:12:01AM +0200, Stefan Gofferje wrote:
> On 12/04/2013 10:53 AM, Martin Braun (CEL) wrote:
> > On Wed, Dec 04, 2013 at 10:37:58AM +0200, Stefan Gofferje wrote:
> >> what is THAT??? Occurred with the 3.7.2 download package...
> >>
> >>
On Wed, Dec 04, 2013 at 10:37:58AM +0200, Stefan Gofferje wrote:
> what is THAT??? Occurred with the 3.7.2 download package...
>
> enterprise:/usr/src/gr-build # cmake ../gnuradio-3.7.2
> CMake Error at CMakeLists.txt:22 (message):
> Prevented in-tree build. This is bad practice.
It looks like
On Tue, Dec 03, 2013 at 11:50:44PM -0800, Artem Pisarenko wrote:
> Martin Braun (CEL) wrote
> > There's an overview of the scheduler:
> > http://gnuradio.squarespace.com/blog/2013/9/15/explaining-the-gnu-radio-scheduler.html
> > "Users", as you say, usually do
Hi guys,
whenever you have a problem and are asking the mailing list for help,
there are a few things to keep in mind. First of all, make sure you have
read this:
http://gnuradio.org/redmine/projects/gnuradio/wiki/ReportingErrors
However, there's something else you should keep in mind: If you wan
On Tue, Dec 03, 2013 at 03:59:34AM -0800, Artem Pisarenko wrote:
> Last few days I tried to implement RTP stream source block (based on
> sync_block) and found that this simple task is not trivial, as it seems to
> be, because GNU Radio scheduler and general data flow are not documented
> (for user
Hi,
the master branch has a new feature for modtool: git support.
If enabled, 'gr_modtool create' will automatically turn the newly
created directory into a git repository and add all the new files.
The modtool subcommands add, rm, disable and makexml can then update
the git index when operating
On Mon, Nov 25, 2013 at 02:50:20PM +0400, nesimi eldarov wrote:
> Sorry, now I put the correct file:
> http://pastebin.com/3bLcTYrE
As you can see in line 74, you do not have ICE installed.
If you want to use CtrlPort, you will have to install it, although most
GNU Radio components work fine with
On Mon, Nov 25, 2013 at 01:22:37PM +0500, Murtaza Ali wrote:
> hi everyone
> i am generating LFM signal in gnu radio with signal source and vco. i do not
> know about parameters of vco like sensitivity .
> does anybody knows??
When writing to this list, don't reply to a digest email.
Create a n
On Mon, Nov 25, 2013 at 01:45:47PM +0400, nesimi eldarov wrote:
> Thanks!
>
> here is the link:
> http://pastebin.com/hC7k9tfG
I'm not sure what you pasted here, but it's not the output of running
cmake in GNU Radio.
MB
--
Karlsruhe Institute of Technology (KIT)
Communications Engineering Lab
On Sun, Nov 24, 2013 at 03:33:36PM +0400, nesimi eldarov wrote:
> Hi Martin,
>
> I installed from source.
> I look into build folder I could not find ControlPort. I guess it was disabled
> during installation but I am not sure.
>
> What do you mean with ' pastebin the cmake output '?
It means y
On Sat, Nov 23, 2013 at 09:30:37PM +0400, nesimi eldarov wrote:
> Hi People,
>
> My system:
> Ubuntu 13.04
> GNURADIO 3.7
How did you install GNU Radio? Did you build it from source? If so, was
CtrlPort enabled during build time? You can pastebin the cmake output if
that's the case.
MB
--
Ka
On Fri, Nov 22, 2013 at 10:51:22AM -0500, Dirk Van Bruggen wrote:
> I've tried following the examples of in tree blocks, but just cannot seem
> to be able to access pub() from python. Am I missing an include, or
> something?
Just to make sure, did you rebuild everything (including SWIG bindings)?
On Wed, Nov 20, 2013 at 02:48:53PM +0400, nesimi eldarov wrote:
> Hi,
>
> I was also trying to use that, but that is hopeless (you have to have ubuntu
> 9.10, USRP2 which is EOL).
For the record and the mailing list archives: libusrp2 was deprecated; the
actual device (USRP2) is still supported
Hi all,
this Thursday is the third Thursday of the month, and as usual, there
will be a developer's call.
To get the time in your time zone, head over to our G+ page to have
Google convert it for you (it's 19:00 CET).
If you want to listen in, join the IRC channel #gnuradio on Freenode and
go to
On Tue, Nov 19, 2013 at 10:52:39PM +0800, adream wrote:
> Does gunradio provide modules for dealing with DSSS (direct sequence spread
> spectrum) signals directly?
> Thank you
Hi adream,
GNU Radio itself does not have DSSS blocks. You may find some in
out-of-tree modules, and you could look
On Mon, Nov 18, 2013 at 09:56:03AM -0500, Robert James wrote:
> I'm eager to learn what's wrong with my concept, especially from the
> experts here.
Robert, there's a lot of basics that need to be covered here. You might
have to go into the textbooks.
First of all, the FFT does *not* give you the
On Mon, Nov 18, 2013 at 08:29:02AM -0500, Robert James wrote:
> I'm working on a series of blocks to measure the level of white noise
> and attentuate it. (Yes, I know there are better ways of doing this,
> like a Wiener filter - my goal here is to experiment and learn.)
>
> Model: Assume white n
On Mon, Nov 18, 2013 at 08:22:08AM -0500, Robert James wrote:
> Wow, switching to a rectangular window of fft_size solved it! I'm
> baffled: I know windows are a way of pretransforming the wave prior to
> FFT, to eliminate artifacts. I just used the default window. Why did
> I need a rectangular
On Mon, Nov 18, 2013 at 02:19:55PM +0100, Frederik Wing wrote:
> Hi Tom,
>
> what you are writing is completely right. Simply increasing the sampling
> frequency will result in a more complex filter.
>
> Nevertheless the firdes.low_pass function does NOT want to calculate the
> 101-tap-filter. Bu
On Sat, Nov 16, 2013 at 01:21:20PM -0200, Yuri P.M wrote:
> Hi,
>
> My name is Yuri and I'm new to the GNU Radio "world". I'm trying to use some
> pieces of the code from the gr-atsc librabry in my project, for latter
> adaptation to my purpose, but I don't know if what I'm doing is correct (I
> s
On Thu, Nov 14, 2013 at 06:58:20PM +0100, Martin Braun (CEL) wrote:
> The call has started, to join please head to #gnuradio on Freenode and
> the G+ page.
>
> We'll be streaming live on YouTube, too.
The recording is available at
http://www.youtube.com/watch?v=7LN6M-8bJuU.
The call has started, to join please head to #gnuradio on Freenode and
the G+ page.
We'll be streaming live on YouTube, too.
MB
On Mon, Nov 11, 2013 at 06:24:51PM +0100, Martin Braun (CEL) wrote:
> Hi everyone,
>
> Thursday is our first post-conference hangout regarding e
Hi Jenny,
please stick to the mailing list.
On Wed, Nov 13, 2013 at 12:07:19PM -0800, Jenny Galasso wrote:
> Thanks for your response, Martin- It's very helpful. I still have some
> confusion about the function probe though. Briefly, how do I query it's value
> from another block?
I'm not sur
On Wed, Nov 13, 2013 at 07:42:35AM -0800, Jenny Galasso wrote:
> I am parsing the sample rate from a file name and would like to dynamically
> pass that to a downstream block (for instance the throttle block). I tried
> using a function proble to get the sample rate value and having the throttle
>
On Mon, Nov 11, 2013 at 03:17:14PM -0800, Wayne Roberts wrote:
> I have reached release functionality of out-of-tree module I use to help in
> PHY
> conformance/interoperability to the MR-FSK standard in IEEE-802.15.4g.
>
> [...]
>
> For more info, see the wiki for it
> https://github.com/dudmuc
On Mon, Nov 11, 2013 at 06:32:28PM +0100, Martin Braun (CEL) wrote:
> Hi guys,
>
> once again, I'd like to invite everyone to submit presentations!
> We are very open to anything you have, and the slots don't have fixed
> lengths, so be it short or long, tutorial
On Tue, Nov 12, 2013 at 01:07:52PM -0500, Tommy Tracy II wrote:
> Dear GNU Radio,
>
> I am writing a GNU Radio block that processes the input in blocks of 1024. Is
> there a way for me to tell the scheduler that I can only accept inputs in
> multiples of 1024, or do I need to block the input, and
On Tue, Nov 12, 2013 at 06:54:43PM +0100, Sylvain Munaut wrote:
> The attached patch fixes that by re-declaring the variable in the parent
> scope.
>
> This fixes the gr-osmosdr build for me.
> @Martin : could you give it a shot to check it fixes it for you too ?
Yep, this fixes gr-osmosdr on my
On Thu, Nov 07, 2013 at 09:59:15AM -0500, Aditya Dhananjay wrote:
> Yes, I am using the current version pulled from the git sources.
>
> To clarify, this is not a rare occurrence. With a > 50% probability, when I
> reduce the TX/RX gain, the problem shows up. The header/payload demux is
> always
On Mon, Oct 14, 2013 at 04:36:33PM +0200, Martin Braun (CEL) wrote:
> Dear friends and colleagues,
>
> next year's FOSDEM (the free and open source developer's meeting in Brussels,
> Europe) will feature a new track on Software Defined Radio.
> Therefore, we invite deve
Hi everyone,
Thursday is our first post-conference hangout regarding everything user
experience related. This includes:
- The web site (in particular: state of the in-wiki docs, FAQ)
- Tutorials
- General user experience
At the conference, this spawned many different discussions and I've
receive
On Mon, Nov 11, 2013 at 03:14:04PM +0530, Sumedha Goyal wrote:
> Hello Aditya,
>
> 1. I tried checking for the average power but that doesn't work. Even with two
> transmitters transmitting at the same time the energy detected by the receiver
> doesn't change much. It remains in the same order.
>
On Wed, Nov 06, 2013 at 11:55:00AM +, y...@solid.co.kr wrote:
> Thank you for your concern.
>
> I will tell you more detail about my problem.
>
>
> I'm trying to make frequency hopping system.
>
> [...]
You don't need to call other blocks from your blocks to do this.
Perhaps this can help
On Sun, Nov 10, 2013 at 11:53:41AM +0800, Howard He wrote:
> I use four antennas for test. Two are official VERT2400, others are 2.4G
> antennas. I use the given example "uhd_fft.grc" (a simple FFT block) hoping to
> observe frequency spectrum of Wi-Fi signal. No matter what antenna I set up
> (eve
On Wed, Nov 06, 2013 at 06:27:40PM -0500, Aditya Dhananjay wrote:
> I created an OFDM TX/RX flowgraph (mostly copying stuff out from the GNU Radio
> reference GRC implementation), where the TX goes out to a USRP UHD sink, and
> the RX reads from a USRP UHD source.
>
> As long as the receive SNR is
On Tue, Nov 05, 2013 at 12:56:24PM +, y...@solid.co.kr wrote:
> I want to call another gnu-blocks (or another hier-block) in work function.
> (Line 14~16)
>
> 1) How to connect input item to another block’s input
>
> 2) How to connect local array to another block’s output
In GNU Radi
On Sun, Nov 03, 2013 at 07:44:37PM +0200, Aydin Tarik Zengin wrote:
> Now my question is about how to write python blocks for gnuradio.
> Is there a tutorial for that?
It's the same you've been quoting before.
> What I want to know is how to pass the block parameters to python work method.
You c
On Sun, Nov 03, 2013 at 03:58:47PM +0200, Aydin Tarik Zengin wrote:
> Now I'm able to add running blocks.
Good :)
> However, if I want to add a block written only in Python - there are no C++
> files -, I add it with gr_modtool,
>
> gr_modtool add -t sync -l python square3_ff
>
> Then it gives
On Fri, Nov 01, 2013 at 07:23:33PM -0700, Yingjie Chen wrote:
> Recently, I have conducted a project based on ofdm benchmark. However, when I
> use the high modulation rate like qam16 and qam64, the packet error rate
> increase significantly. I guess the reason is that the preamble in gunradio is
>
FYI,
the hangout is live on:
https://www.youtube.com/watch?feature=player_embedded&v=tD2lWtMQesA
Expect a lot of silence at the beginning.
MB
On Fri, Oct 18, 2013 at 12:58:58PM -0500, West, Nathan wrote:
> I think it might be good for whoever would be interested in VOLK to
> get together for a
On Wed, Oct 30, 2013 at 01:18:53PM +0100, Baier wrote:
> Hi all,
>
> I have simulated ofdm transmitter with 200kbps in grc. Without
> function multiply const I got a very bad spectrum mask of the
> transmiitter. If I insert the block multiply const with the 0.05 the
> spectrum mask and SNR will be
Hi Tarik,
On Tue, Oct 29, 2013 at 04:43:53PM +0200, Aydin Tarik Zengin wrote:
> I'm getting an error while adding a new block to grc version
> 3.7.2git-110-gb8b9bff2.
> I followed the tutorial at http://gnuradio.org/redmine/projects/gnuradio/wiki/
> OutOfTreeModules
>
> Also had to modify at some
On Tue, Oct 29, 2013 at 02:46:20PM +0400, nesimi eldarov wrote:
> hi Martin,
>
> I run : sudo apt-get install gnuradio
>
> It installed something in a short time.
>
> However that did not work when I run another application; it produces this
> error:
>
>
> > checking for GNURADIO_CORE... conf
On Mon, Oct 28, 2013 at 11:10:05AM -0700, mhor...@cellantenna.com wrote:
> I am trying to use Gnuradio with the bladeRF software defined radio
> technology,
> so I followed the steps for installing Gnuradio towards the bottom of the page
> of the following website https://github.com/Nuand/bladeRF/
On Tue, Oct 29, 2013 at 02:20:47AM -0400, Tommy Tracy II wrote:
> I’m finding it particularly challenging to debug new gnu radio blocks. If I
> have a printf() in my work() function, the output is not written to std out;
> is
> it redirected elsewhere? What other methods are you using for debuggin
On Mon, Oct 28, 2013 at 11:52:19PM +0400, nesimi eldarov wrote:
> what do I need? - I need gruradio-core. That is not in the folder pkgconfig.
> There is not any folder with the name gruradio-core and the
> file gruradio-core.pc.
> I set "export PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/usr/local/lib/pkgco
On Mon, Oct 28, 2013 at 08:29:48AM -0700, mhor...@cellantenna.com wrote:
> I am an engineering intern at a company called Cellantenna and I just recently
> installed Gnuradio 3.71. I've been trying to follow some tutorials online, and
> I noticed that a lot of these tutorials use blocks (such as QT
On Mon, Oct 28, 2013 at 12:29:31PM -, e...@silchestervillage.co.uk wrote:
> Sorry but this is a very newbie question. I tried to get GR up and running
> many years ago when Fedora 8 was new! I then tried a couple of times to get
> it going on windows - I got some blocks up but could not move or
Hi all,
I just updated the examples in gr-digital/examples/ofdm using the
feedback I got the last couple of weeks. They're in the current master,
so if you want to check them out you probably need to git pull first.
Some notes on the examples:
- ofdm_loopback.grc is probably where you want to st
On Wed, Oct 23, 2013 at 06:19:00PM -0700, eontool wrote:
> Has anyone tested successfully these two files combined?
>
> The input data or vector source is an array of 96 elements [0-95] but I'm
> getting a strange output at the end.
>
> The 96 + 4 elements from the crc, then another 100 values (
On Wed, Oct 23, 2013 at 07:05:08PM +0200, Martin Braun (CEL) wrote:
> > Alternately, can someone suggest the method of converting the file content
> > into
> > vectors of packet length configurable by the user so that it can be entered
> > into the vector source.
>
&g
On Wed, Oct 23, 2013 at 10:06:57PM +0800, ashish mishra wrote:
> I want to transmit a file through tx_ofdm.grc model and receive it in using
> rx_ofdm.grc. Presently this simulation takes in a vector source of packet
> length as input and it creates tags for it.
>
> I am able to receive these vec
On Wed, Oct 23, 2013 at 02:14:01PM -0200, Aylons Hazzud wrote:
> Moreover, this particular project (Sirius, in Brasil), has adopted an
> open hardware and free software attitude, which makes the use of
> Gnuradio particularly interesting.
That's a great attitude :)
> Has anyone worked with this k
Dear students, dear prospective mentors,
Google has already put out the word that GSoC will continue next year.
Given the huge success of our summer of code, we're pretty sure we'll
also continue participating.
Of course, it's too early to say anything definitive about next year's
GSoC, except fo
On Wed, Oct 23, 2013 at 03:23:36AM -0700, Bharat Mukkala wrote:
> the i/o ratio is 1 since the number of input items is same the number of
> output items, but while processing we use the whole signal but not a single
> element while calculating the output elements, i have doubt in figuring out
> ho
On Tue, Oct 22, 2013 at 11:10:54PM -0700, Bharat Mukkala wrote:
> I am creating a new gnu radio block for decomposing the signal using haar
> wavelet decompostion and includes the option of number of levels of
> decompostion.
> In order to write the code, how should i set the set_history or foreca
On Tue, Oct 22, 2013 at 02:20:04PM +0200, Nemanja Savic wrote:
> Hello guys again!
>
>
> Based on Martins suggestion and Marucs' explanation I copied some principles
> from sync_interpolator and situation looks much better. I used function
> set_output_multiple and set_relative rate and now the o
On Tue, Oct 22, 2013 at 02:22:20PM +0200, Nemanja Savic wrote:
> Or maybe the question should be like this: on which parameter to rely when
> making general work function, number of iput items or number of output items?
As I just said, in a sync_interpolator, you're not using general_work(),
and y
On Mon, Oct 21, 2013 at 09:06:24PM -0500, JPL wrote:
> Hello, Martin
>
>
> 1. Would you please tell me where the "manual page" is?
It's in the manual.
You go to gnuradio.org, click 'C++ manual', then 'Related Pages', then
'Tagged Stream Blocks'.
> Because I cannot understand
>
> How the Vecto
On Fri, Oct 18, 2013 at 06:00:48PM -0500, JPL wrote:
> Question:
>
> (1) should I just replace the "Vector Source block" into "File Source" in
> tx_ofdm.grc?
This won't work, the input expects a tagged stream (see the
corresponding manual page). You will need to split the file into
packets, and t
On Mon, Oct 14, 2013 at 04:36:33PM +0200, Martin Braun (CEL) wrote:
> Dear friends and colleagues,
>
> next year's FOSDEM (the free and open source developer's meeting in Brussels,
> Europe) will feature a new track on Software Defined Radio.
> Therefore, we invite deve
On Fri, Oct 18, 2013 at 06:06:16AM -0700, Alexander B wrote:
> That part I have correct.
> -> I can ping the device
> -> uhd_find_devices returns as it should
> -> utilitiy programs (txrx_loopback) work
>
> My problem I think is in integration with GRC.
You need to specify addr="IP", not just the
On Fri, Oct 18, 2013 at 02:32:48PM +0200, Nemanja Savic wrote:
> The body of my forecast function is:
>
> ninput_items_required[0] = noutput_items * d_sym_rate / d_sampling_freq;
> printf("ninput_items_required %d, noutput_items %d\n", ninput_items_required
> [0], noutput_items);
If d_sym_rate an
The video is available at:
http://www.youtube.com/watch?v=rBXcqNg_xT8&feature=share
Thanks everyone for attending!
Martin
On Wed, Oct 16, 2013 at 11:32:14PM +0200, Martin Braun (CEL) wrote:
> On Wed, Oct 09, 2013 at 10:57:39AM +0200, Martin Braun (CEL) wrote:
> > As usual, we wi
On Thu, Oct 17, 2013 at 05:17:45PM +0200, Sylvain Munaut wrote:
> Hi,
>
> > You're right, but in this case the input was already real and the
> > "channel" doesn't modify the phase. So it's OK--the 'correct' thing
> > would be to do a real FFT.
>
> Huh ?
Erm, yep :) My apology.
I was assuming yo
On Thu, Oct 17, 2013 at 04:44:00PM +0200, Sylvain Munaut wrote:
> > http://img844.imageshack.us/img844/5910/s2i3.png
>
> I'm not convinced by the way you handle the complex part of the FFT result ...
>
> You can't just drop it, it's needed for the reconstruction ...
You're right, but in this cas
On Thu, Oct 17, 2013 at 11:13:14AM -0300, Gui Ritter wrote:
> I'm new to Pastebin, and I couldn't find an option to upload images, so I used
> ImageShack instead.
That's fine :)
Have you tried a boxcar window?
MB
--
Karlsruhe Institute of Technology (KIT)
Communications Engineering Lab (CEL)
On Wed, Oct 16, 2013 at 07:01:31PM -0300, Gui Ritter wrote:
> Sorry, forgot the attachment.
GR 3.7 won't open this. Can you pastebin a screenshot?
MB
--
Karlsruhe Institute of Technology (KIT)
Communications Engineering Lab (CEL)
Dipl.-Ing. Martin Braun
Research Associate
Kaiserstraße 12
Buil
On Wed, Oct 09, 2013 at 10:57:39AM +0200, Martin Braun (CEL) wrote:
> As usual, we will be doing a developer's call the third Thursday a
> month, which is October 17, 1700 UTC (19:00 CET, other timezoners please
> convert yourself).
Just a quick reminder--this call is tomorrow, so
On Tue, Oct 15, 2013 at 06:54:50PM +0100, Sohaib Khan wrote:
> Kindly suggest me the most suitable version of gnuradio that can be used with
> rtlsdr2832u and Funcube dongle.
Just use the latest and you should be fine.
MB
--
Karlsruhe Institute of Technology (KIT)
Communications Engineering La
Dear friends and colleagues,
next year's FOSDEM (the free and open source developer's meeting in Brussels,
Europe) will feature a new track on Software Defined Radio.
Therefore, we invite developers and users from the free software radio
community and to join us for this track and present your t
hat means my added code
> cannot take effect. Do I miss something?
Hard to say without knowing details. Probably yes.
MB
>
>
> Best,
>
> Kay
>
>
>
> 2013/10/11 Martin Braun (CEL)
>
> Read http://gnuradio.org/redmine/projects/gnuradio/wiki/Move_3-6_to_
Read http://gnuradio.org/redmine/projects/gnuradio/wiki/Move_3-6_to_3-7
MB
On Fri, Oct 11, 2013 at 09:25:53PM +0800, Yingjie Chen wrote:
> Hi guy,
>
>
> I have updated the gunradio to 3.7.1, but fond the c++ block name and style
> changed a litter bit. like ofdm_insert_preamble.cc is changed to
Great idea!
In fact, it's so good, it's already been implemented:
http://gnuradio.org/redmine/projects/gnuradio/wiki/GRCon13WG
MB
On Thu, Oct 10, 2013 at 08:02:22AM -0400, Michael Dickens wrote:
> It is great to see some of the working group notes coming up for all to work
> with on the GR wiki
Hi Bijendra,
it's not quite clear what your question is.
A couple of things you might want to consider:
- AM is per se noisy. A commercial HF receiver would also have much
better filters than you can achieve with an LFRX-only setup, so expect
much noise here
- FM is much better with noise.
-
On Wed, Oct 09, 2013 at 08:12:35PM -0400, Marcus D. Leech wrote:
> [Ideas]
Marcus,
can you please add them to
http://gnuradio.org/redmine/projects/gnuradio/wiki/GRCroadmap?
Thanks,
MB
--
Karlsruhe Institute of Technology (KIT)
Communications Engineering Lab (CEL)
Dipl.-Ing. Martin Braun
Resear
On Wed, Oct 09, 2013 at 05:15:04PM -0400, Baokun Liu wrote:
> Hi all,
>
> I am using USRP N210 and GRC. I have a question over changing a USRP
> parameter using a slider in GRC.
>
> If I want to change the TX frequency from 2GHz to 4GHz using a slider, as
> we know, during this process, the slide
Hi everyone,
still feeling good about GRCon13? Or maybe you couldn't attend and would
like another chance to participate? How about this:
As usual, we will be doing a developer's call the third Thursday a
month, which is October 17, 1700 UTC (19:00 CET, other timezoners please
convert yourself).
Dear community,
at the last GRCon we discussed the user experience regarding GNU Radio.
A pretty huge group of people came together for a very productive
discussion on how the user experience can be improved.
Our method of choice was to go through the "life cycle" of a GNU Radio
developer, starti
Hi everyone,
following GRCon '13, we had a one-day hackfest. A *lot* of people stayed
around for this, improving GNU Radio on all fronts.
Since there has been a request to know what we did, I have started a
wiki page:
http://gnuradio.org/redmine/projects/gnuradio/wiki/Hackfest1310
I would like
Hi Jared,
this is how the XML validation works, yes. It's probably just an
artifact of whatever XML parser we're using, but we've all gotten used
to it.
MB
On Fri, Oct 04, 2013 at 12:46:54PM -0600, Jared Clements wrote:
> I'm getting the following error when opening gnuradio-companion on my
> h
Hi everyone,
I'm very happy to announce that there will be an SDR-themed developer
room at FOSDEM 2014.
FOSDEM is an annual event for free software people of all shapes and
colours. It always takes place in Brussels; the next FOSDEM will happen
on 1 & 2 February 2014. For more info on this event
On Wed, Oct 02, 2013 at 08:02:55PM +0530, lingeswar kandregula wrote:
> hi community,
>
>
> can we do these examples without using the length tags.. if so please let me
> know the way.. looking forward for reply.
You could rewrite the blocks for fixed lengths. Out of the box, no, you
can't dispe
Hi Lucas,
On Mon, Sep 30, 2013 at 11:26:16AM -0300, Lucas Ingles wrote:
> I am using GNU Radio to study digital communications systems.
good choice!
> Can someone please recommend me some reference books about the theory of I/Q
> samples?
There is actually a page on this topic on the web site:
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