Re: [Discuss-gnuradio] Error when installing gnuradio 3.7

Thank you. Azza On Thu, Aug 28, 2014 at 12:42 PM, Michael Dickens wrote: > OK; 2.6; let me see if I can fix it quickly. - MLD > > On Aug 28, 2014, at 12:41 PM, Azza Ben Mosbah > wrote: > > > Thank you for this quick response. > >

Re: [Discuss-gnuradio] Error when installing gnuradio 3.7

Thank you for this quick response. cmake version 2.6-patch 4 Azza On Thu, Aug 28, 2014 at 12:39 PM, Michael Dickens wrote: > Hi Azza - This is a recent change in the way FindUHD works (by me). What > version of CMake are you using? - MLD > > On Aug 28, 2014, at 12:37 PM, Azz

[Discuss-gnuradio] Error when installing gnuradio 3.7

Hi All, I am trying to install gnuradio v3.7. It is not the first time I do this installation, but it is the first time I got the attached error in the cmake step. Any help is welcomed. Thank you. Regards, Azza ___ Discuss-gnuradio mailing list Discuss-

Re: [Discuss-gnuradio] How to calculate SNR?

Hi All, I checked this document, it gives an idea about SNR estimators in GNU Radio: http://www.trondeau.com/blog/2011/12/30/snr-estimators.html And I checked this Python file: http://gnuradio.org/redmine/projects/gnuradio/repository/revisions/ef4d48de26b64d89851a93fc5402b33fcc1a809f/entry/gr-digi

Re: [Discuss-gnuradio] How to calculate SNR?

Ah, ok thank you. Azza -- View this message in context: http://gnuradio.4.n7.nabble.com/How-to-calculate-SNR-tp47193p47237.html Sent from the GnuRadio mailing list archive at Nabble.com. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org htt

Re: [Discuss-gnuradio] How to calculate SNR?

Ok. Thank you. I will see that. A one more question please: the SNR, is it in dB? and why the output for the SNR block is complex? Azza -- View this message in context: http://gnuradio.4.n7.nabble.com/How-to-calculate-SNR-tp47193p47233.html Sent from the GnuRadio mailing list archive at Nabble

Re: [Discuss-gnuradio] How to calculate SNR?

As you can see from the flowgraph, I add noise to the signal to simulate a channel. And I calculate the SNR at the receiver. Since the noise is known, I can calculate my SNR. But, comparing to the output of the "MPSK SNR Estimator Probe", it is not the same. Azza -- View this message in context

Re: [Discuss-gnuradio] How to calculate SNR?

I calculate the SNR using the formula SNR=20*log10[RMS(signal)/RMS(noise)]. You find attached my flow graph. Azza -- View this message in context: http://gnuradio.4.n7.nabble.com/How-to-calculate-SNR-tp47193p47229.html Sent from the

[Discuss-gnuradio] How to calculate SNR?

Hi All, In order to calculate the SNR at the receiver, I have generated a QPSK signal, sent it with an USRP through a canal and then received it with another USRP. So, I have used The "MPSK SNR Estimator" block at the receiver to monitor the SNR values. But values are not correct, I have tried "MP

Re: [Discuss-gnuradio] RX Channel Out Of Range

GRC, I > think. > > Cheers, > Ben > > > On Wed, Mar 12, 2014 at 2:41 PM, Azza Ben Mosbah < > azza.ben.mos...@gmail.com> wrote: > >> Hi All, >> >> I am using GNU Radio Companion version 3.6.2. >> When I execute a simple flowgraph (containin

[Discuss-gnuradio] RX Channel Out Of Range

Hi All, I am using GNU Radio Companion version 3.6.2. When I execute a simple flowgraph (containing two blocks: USRP Source and WX GUI FFT Sink), it generates the following error: *RuntimeError: LookupError: IndexError: multi_usrp: RX channel 214957620880 out of range for configured RX frontends*

[Discuss-gnuradio] GR-UHD detected ABI compatibility mismatch with UHD library

Hi All, After installing UHD and GNU Radio, when I execute any flowgraph using the USRP, I find this error: *RuntimeError: * *GR-UHD detected ABI compatibility mismatch with UHD library.* *GR-UHD was build against ABI: 3.4.0-3,* *but UHD library reports ABI: 3.6.0-1* *Suggestion: install an ABI c

Re: [Discuss-gnuradio] Error in "Constellation Decoder" block

Yes, sure. Thank you. Now it is working. Regards, - Azza Ben Mosbah On Thu, Mar 6, 2014 at 12:45 PM, Ben Reynwar wrote: > Try changing: > "digital.constellation_qpsk.base()" > to: > "digital.constellation_qpsk().base()" > > Note the

Re: [Discuss-gnuradio] Error in "Constellation Decoder" block

27;* I don't know what is the matter. But, maybe, there is some issues with my GRC version (GNU Radio Companion 3.6.2). Regards, - Azza Ben Mosbah On Thu, Mar 6, 2014 at 10:54 AM, Tom Rondeau wrote: > On Wed, Mar 5, 2014 at 8:59 AM, Azza Ben Mosbah > wrote: &g

Re: [Discuss-gnuradio] Error in "Constellation Decoder" block

ed. I am still wondering what is the right way to define a* 'digital_constellation_sptr' *type in the "Constellation Decoder" argument without passing by the "Constellation Object" block. Regards, Azza On Tue, Mar 4, 2014 at 5:16 PM, Tom Rondeau wrote: >

[Discuss-gnuradio] Error in "Constellation Decoder" block

Hi All, I am manipulating GNU Radio Companion. While using the "Constellation Decoder" block, I have put *digital.constellation_qpsk* as a "Constellation Object" argument. But, I have found an error when I have executed the flow graph: *Traceback (most recent call last):* * File "/users/anb10/me

[Discuss-gnuradio] Sink File Bits

Hello everybody, After demodulating and decoding, I want to have a file sink that returns bits or bytes. What block should I call ? Thanks in advance. I am looking forward to your reply. Best regards, -- Azza BEN MOSBAH Elève-ingénieur à Sup'Com, Tunisie Stagiaire à Telecom SudParis, Franc

[Discuss-gnuradio] How to get constellation after demodulation

Hello, I receive data from USRP and demodulate them, then I can have the constellation. But, I can't find a way to join blocks, so they can show a result. I need some help concerning the scheme I have to implement to get my constellation. Thanks in advance. Best Regards, Azza. ___