Re: [Discuss-gnuradio] Gnuradio-companion

To amplify what Tom said, if PyBOMBS fails to compile, please increase its log level by adding "-v -v -v", capture the full output, upload it to something like pastebin and post a link. I don't have any RHEL6 machines handy but my F22 machine is able to build enough pieces to get gnuradio-companio

Re: [Discuss-gnuradio] New to GNURADIO - DIGITAL MODULATION

Hi mohamid92: You could try the “Guided Tutorials”, they have a section on PSK modulation that is quite good. The URL is: http://gnuradio.org/redmine/projects/gnuradio/wiki/Guided_Tutorials You can also watch the excellent

[Discuss-gnuradio] Lock-Up Time for 2PSK Demodulation

Hi All: I have a .grc 2PSK demodulator working for the RDS subcarriers on FM radio signals. I note however that it takes a couple of minutes for the PSK demod hierarchical block to settle and give me consistent good data. I tried fiddling with the three timing parameters in the block but lock-

Re: [Discuss-gnuradio] Gnuradio-companion

On Mon, Nov 16, 2015 at 12:47 PM, Sumit Saluja wrote: > Hi, > > I am building gnuradio on RHEL 6 and gnuradio-companion is not enabling > . How I Should enable gnuradio-companion > > And UHD is not compiling on RHEL6. > > > > > > Thanks > > > > Sumit Saluja > Install using PyBOMBS. It should

Re: [Discuss-gnuradio] USRP Complex Demodulation

I'm referring to the receiver. It's essentially two receivers in parallel, one mixing down with the local oscillator (cosine) and the other mixing down with the same local oscillator, but phase shifted -90 degrees (sine). This is how it generates two components for the input signal. Of course, you

Re: [Discuss-gnuradio] USRP Complex Demodulation

Thanks James, What do you mean by “USRP will generate the in-phase and quadrature components”? Are you referring to the USRP receiver or transmitter? I am feeding the USRP transmitter with a real only signal s(t)=cos(w0*t), why does the received signal has an imaginary component (i.e. Q(t) is n

Re: [Discuss-gnuradio] USRP Complex Demodulation

Hi Roee, The USRP is not expecting any particular type of data. The USRP is a direct conversion transceiver that operates on I and Q samples, so in theory, you should be able to generate/receive any type of signal. If you input a cosine to the USRP, in will generate the in-phase and quadrature com

Re: [Discuss-gnuradio] USRP Burst Mode Weirdness

Hi Marcus, You understand correctly. I ran this experiment with USRP block 'length tag’ field enabled and another time with this field empty (these correspond to ‘signal_with_tag’ and ‘signal_without_tag’ respectively). Regarding your questions: 1. I am plotting the real part of the received si

[Discuss-gnuradio] LMS-DD Equalizer with OOK Modulation

Hello, I am trying to demodulate an on-off-keyed signal, and in doing so am trying to use the LMS-DD equalizer as follows: Source --> BPF --> AGC --> PLL --> RRC --> M&M Clk Recovery --> LMS-DD EQ --> GUI Sink. The LMS-DD has gain set to 0.01, taps set to 20, and sps set to 1 to match t

[Discuss-gnuradio] Gnuradio-companion

Hi, I am building gnuradio on RHEL 6 and gnuradio-companion is not enabling . How I Should enable gnuradio-companion And UHD is not compiling on RHEL6. Thanks Sumit Saluja ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.

Re: [Discuss-gnuradio] Dynamic changes of the samples flow in a flowgraph

On Thu, Nov 12, 2015 at 4:39 PM, Piotr Krysik wrote: > Hi all, > > I'm looking for a way to modify dynamically flow of samples in a flowgraph. > Making changes in between lock() and unlock() functions is not good > enough - a number of samples from sources like rtl-sdr are lost during > flowgraph

Re: [Discuss-gnuradio] gr-cdma

as you say ,i am using e310,so i run all the command as root the gnuradio is pre_installed ,so i do not konw where is the gnuradio. --Ekko 2015-11-16 21:32 GMT+08:00 Achilleas Anastasopoulos : > Ekko, > > Do not worry about grc for now. You first have to fix the python import > error. > > It

Re: [Discuss-gnuradio] gr-cdma

Another suggestion is to install your gr-cdma exactly where your gnuradio is installed. Achilleas On Mon, Nov 16, 2015 at 9:07 AM, Achilleas Anastasopoulos wrote: > Looking at the output of the cmake I think I know what is going on: > > > Your gnuradio installation is not in the standard direct

Re: [Discuss-gnuradio] gr-cdma

Ekko, Do not worry about grc for now. You first have to fix the python import error. It is very unusual that you have downloaded the gr-cdma in the directory "/home/gr-cdma" . In the /home directory usually there are user directories and you do not have permissions, etc... How do you run all thes

[Discuss-gnuradio] gr-cdma

Ekko, can you tell me exactly what is the directory where gr-cdma is downloaded (trunk directory) Also can you say what exactly you put in the "prefix=" command in cdma_parameters.py file as per the instruction in the README file: --- 2) Edit the file gr-cdma/python/cdma_parameters.py and s

Re: [Discuss-gnuradio] pybombs cross-compile mako error

> Arg, I forgot you are using rfnoc :) Sorry. > The latest e310 files with rfnoc are here: > http://files.ettus.com/e3xx_images/alpha/fido-rfnoc-test/ > You could also update the release-3 image to have rfnoc also. Philip, no worries, RFNoC always seems to add extra wrinkles. So that is the origi

Re: [Discuss-gnuradio] USRP Competition

I would like to send data through specific channels among the USRP. How do I know what channels are available? I have tried to search for channels but I was not successful. Are there any commands that I need to provide for the available channels? Kindly help. Thank you Regards, Dave On Nov 11, 20

Re: [Discuss-gnuradio] eventstream questions

Nevermind, found gr-burst at https://github.com/gr-vt/gr-burst. Sorry to email before reading through Tim's examples to the end. - Tom On Sun, Nov 15, 2015 at 3:25 PM, Tom Krauss wrote: > (resending from the specific email I registered on this list with, since > I'm not seeing it posted to the

[Discuss-gnuradio] New to GNURADIO - DIGITAL MODULATION

Hello everyone, I am new user for GNU-RADIO and basically do not know anything about SDR. i have been looking around for some tutorials and all i get is some basic tutorials that explain basic things like how to use blocks and generate some waves and staff like that. Now my question is , is there

Re: [Discuss-gnuradio] USRP Burst Mode Weirdness

Hi Roe! Your situation is the following, if I understand correctly: 1. you're producing a real-valued cosine with a theoretical frequency of 2kHz and a sampling rate of 12,500kHz, so one period of the cosine is 6250 samples. 2. you're putting that into 10,000 sample bursts, and transmit these thro

Re: [Discuss-gnuradio] gr-cdma

and now i add a regular user ,run the command again hope it is useful --Ekko 2015-11-16 22:33 GMT+08:00 chai E : > and now i add a regular user ,run the command again > > hope it is useful > > --Ekko > > 2015-11-16 22:32 GMT+08:00 chai E : > >> as you say ,i am using e310,so i run all the comma

[Discuss-gnuradio] question about the ofdm receiver

Hi, Thank you in advance. I have a discussion with my classmates about the question.As we all know,the detection of the sync burst have delayed and the signal delayed again. The delay of the sync burst is fft_len-1.And the signal delayed cp_len+fft_len. Although the minor er

Re: [Discuss-gnuradio] gr-cdma

Looking at the output of the cmake I think I know what is going on: Your gnuradio installation is not in the standard directory /usr/local/... So probably your PYTHONPATH variable is not set for python to look there. You should add the directory /usr/local/lib/python2.7/site-packages/ in you

[Discuss-gnuradio] eventstream questions

(resending from the specific email I registered on this list with, since I'm not seeing it posted to the list - sorry if you see a repeat) I'm trying to learn about eventstream to transmit and receive packets. Started out simple: Message Strobe -> Random PDU Generator -> EventStream Source -> QT

[Discuss-gnuradio] LMS-DD Equalizer with OOK Modulation

Hello, I am trying to demodulate an on-off-keyed signal, and in doing so am trying to use the LMS-DD equalizer as follows: Source --> BPF --> AGC --> PLL --> RRC --> M&M Clk Recovery --> LMS-DD EQ --> GUI Sink. The LMS-DD has gain set to 0.01, taps set to 20, and sps set to 1 to match t

[Discuss-gnuradio] eventstream questions

Hi folks, I'm trying to learn about eventstream to transmit and receive packets. Started out simple: Message Strobe -> Random PDU Generator -> EventStream Source -> QT GUI Time Sink. No luck - nothing showing up here in the output stream. In Tim O'Shea's http://oshearesearch.com/2015/04/02/bur

Re: [Discuss-gnuradio] USRP Complex Demodulation

Hi James, Thank you very much for your time and effort! Your explanation of the USRP complex modulation/demodulation is equivalent to what I originally described. Since my experiments show that the receiver did not always received what was transmitted, I thought there was something wrong with

Re: [Discuss-gnuradio] gr-cdma

Ekko, I can help you with these error messages. They are not supposed to appear. Can you describe in detail the results from the steps you followed to build/install gr-cdma. They are described in the README file of gr-cdma. There are 3 precisely defined steps. Achilleas