Re: [Discuss-gnuradio] 回复: references using in ofdm_equalizer_simpledfe

2014-09-08 Thread Tiankun Hu
Aditya/Martin, thanks your help, I will read these references that you mentioned. 在 2014年09月06日 00:31, Aditya Dhananjay 写道: Hi Tiankun, To add on to what Martin said: In DFE, the channel state H_I on subcarrier i is updated everytime it receives a new symbol on that subcarrier. It doesn't

Re: [Discuss-gnuradio] Latency measurements

2014-09-08 Thread Mostafa Alizadeh
Harold, I'm not using any protocol. This is just a GNURadio application. It is important to me to know is there any way to optimize input/output buffers of blocks to reduce latency as much as possible? Is the GNURadio able to do so automatically? Best, Mostafa On Sun, Sep 7, 2014 at 9:49 PM,

Re: [Discuss-gnuradio] Errors in Terminal prior to execution of GNURadio-Companion

2014-09-08 Thread Tom Rondeau
On Sun, Sep 7, 2014 at 9:00 PM, Ed sbfred...@comcast.net wrote: Hi: I am have some problems running GNURadio-Companion on my Quad-core Wandboard (ARM 7i hf) running Ubuntu 14.04. When I execute GNURadio-Companion I get a whole bunch of errors, here is the last few lines: Warning: Block

Re: [Discuss-gnuradio] AttributeError: 'module' object has no attribute 'block_name'

2014-09-08 Thread Tom Rondeau
On Wed, Sep 3, 2014 at 9:57 AM, Simone Ciccia S210664 simone.cic...@studenti.polito.it wrote: Very thanks for the immediate answer, Sorry, I forgot that I passed two arguments when the block was created: $insert valid arguments: float reference, float alpha while unsigned int

[Discuss-gnuradio] installing gnuradio and gr-osmosdr

2014-09-08 Thread Ben Hiett
having a hard time getting gnuradio to work with my dvb-t usb stick latest attempt has been to move to using pybomb, e.g. https://smyl.es/how-to-install-gnu-radio-fftw-rtl-sdr-grosmosdr-and-more-using-pybombs-with-dependencies-by-rpmdeb-or-build-from-source/ originally i installed gnuradio and

Re: [Discuss-gnuradio] installing gnuradio and gr-osmosdr

2014-09-08 Thread GeorgeF
I too had a lot of problems with getting gnuradio, gnrradio-companion to work with my RTL-SDR device. After asking a ton of questions on this list and getting a lot of good help I got it working great. One thing that seems to missing from the internet is a good step-by-step series of

[Discuss-gnuradio] TX Gain parameter in uhd_siggen_gui

2014-09-08 Thread zealdeal
Hello everyone, Im trying to set the TX Gain of USRP device using the following command while transmitting using uhd_siggen_gui tool: ./uhd_siggen_gui --sine -g TX_Gain -f 1013M --amplitude=1.0 -A TX/RX -v If I set the TX_Gain to non integer or non 0.5 fractional values, it is getting set to

[Discuss-gnuradio] updating issue in gr-osmosdr

2014-09-08 Thread Tiankun Hu
Hi All, I have updated gnuradio to 3.7.5 recently, and then reconfigrebuild gr-osmosdr to link its lib against to v3.7.5's gnuradio-runtime.so. But when I import osmosdr, I got below error ImportError: libgnuradio-runtime-3.7.4.so.0.0.0: cannot open shared object file: No such file or

Re: [Discuss-gnuradio] TX Gain parameter in uhd_siggen_gui

2014-09-08 Thread mleech
The total gain setting range, and gain step size are set by the hardware. In most cases, the step size is 0.5dB. On 2014-09-08 10:50, zealdeal wrote: Hello everyone, Im trying to set the TX Gain of USRP device using the following command while transmitting using uhd_siggen_gui tool:

Re: [Discuss-gnuradio] updating issue in gr-osmosdr

2014-09-08 Thread Tiankun Hu
Resolved it Since my gr-osmosdr dependent on gr-iqbal, but I forgot rebuild it. Need rebuild gr-iqbal to let its lib also link against to v3.7.5 在 2014年09月08日 22:56, Tiankun Hu 写道: Hi All, I have updated gnuradio to 3.7.5 recently, and then reconfigrebuild gr-osmosdr to link its lib against to

Re: [Discuss-gnuradio] TX Gain parameter in uhd_siggen_gui

2014-09-08 Thread Martin Braun
In other words, it's the slider that's buggy, not the gain setting. M On 09/08/2014 05:03 PM, mle...@ripnet.com wrote: The total gain setting range, and gain step size are set by the hardware. In most cases, the step size is 0.5dB. On 2014-09-08 10:50, zealdeal

[Discuss-gnuradio] running uhd_fft with a rtlsdr stick

2014-09-08 Thread Ben Hiett
is it possible to run uhd_fft directly from the IQ data coming over usb from an rtlsdr stick? or is this only for use with an ettus usrp device? ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org

Re: [Discuss-gnuradio] running uhd_fft with a rtlsdr stick

2014-09-08 Thread mleech
If you want to do the equivalent of uhd_fft for non-Ettus devices, just use osmocom_fft On 2014-09-08 11:52, Ben Hiett wrote: is it possible to run uhd_fft directly from the IQ data coming over usb from an rtlsdr stick? or is this only for use with an ettus usrp device?

Re: [Discuss-gnuradio] running uhd_fft with a rtlsdr stick

2014-09-08 Thread Ben Hiett
should I already have that installed due having installed gr-osmosdr or do I need to get it from somewhere else? I was thinkinkg of having a go with multimode.py as well, thats your piece of work i think? On Monday, 8 September 2014, 16:57, mle...@ripnet.com mle...@ripnet.com wrote:

[Discuss-gnuradio] Clock Recovery MM

2014-09-08 Thread Bastian Bloessl
Hi all, looking at the clock recovery MM code, I wonder if d_omega_relative_limit is a relative or absolute deviation from d_omega. Here it looks like absolute https://github.com/gnuradio/gnuradio/blob/next/gr-digital/lib/clock_recovery_mm_ff_impl.cc#L107 Here it is relative

[Discuss-gnuradio] Problem with gnuradio-companion and HackRF

2014-09-08 Thread GeorgeF
I just reinstalled Ubuntu on my computer, I compiled GNURadio from source. I'm now running GNU Radio Companion 3.7.6git-1-g01deede3 With GNU Radio Companion I can access and listen to radio stations on my RTL-SDR dongle just fine. However today I just received my HackRF radio. Now, using

Re: [Discuss-gnuradio] Problem with gnuradio-companion and HackRF

2014-09-08 Thread Michael Ossmann
On Mon, Sep 08, 2014 at 06:06:42PM -0400, GeorgeF wrote: Now, using the osmocom Source HackRF I receive the following error msg. FATAL: No supported devices found to pick from Is there a driver I need to download for HackRF, if so where how to I add that to my system? You need libhackrf.

Re: [Discuss-gnuradio] Problem with gnuradio-companion and HackRF

2014-09-08 Thread Doug Hutton
George - I just finished doing the same thing for my shiny-new Hackrf. Here is what worked for me on the same Ubuntu and GNURadio: sudo apt-get install hackrf-tools Add a one-line file to enable USB access to hackrf. sudo gedit Start a new file and enter this one line: ATTR{idVendor}==1d50,

Re: [Discuss-gnuradio] Problem with gnuradio-companion and HackRF

2014-09-08 Thread Richard Sharpe
On Mon, Sep 8, 2014 at 3:35 PM, Doug Hutton do...@suddenlink.net wrote: George - I just finished doing the same thing for my shiny-new Hackrf. Here is what worked for me on the same Ubuntu and GNURadio: sudo apt-get install hackrf-tools Add a one-line file to enable USB access to hackrf.

Re: [Discuss-gnuradio] TX Gain parameter in uhd_siggen_gui

2014-09-08 Thread zealdeal
Thanks for the info. Can anybody please confirm whether the step size limit of 0.5 dB is valid for USRP N200? -- View this message in context: http://gnuradio.4.n7.nabble.com/TX-Gain-parameter-in-uhd-siggen-gui-tp50321p50334.html Sent from the GnuRadio mailing list archive at Nabble.com.

Re: [Discuss-gnuradio] TX Gain parameter in uhd_siggen_gui

2014-09-08 Thread Marcus D. Leech
On 09/08/2014 11:13 PM, zealdeal wrote: Thanks for the info. Can anybody please confirm whether the step size limit of 0.5 dB is valid for USRP N200? It's not the underlying motherboard, it's the daughter-cards. I think all of WBX, SBX and CBX use a step attenuator with 0.5dB step size.