Re: [Discuss-gnuradio] GNU Radio, peak values, export into a file

You can use file sink to store your peak value. It will continuously store the values until you close your program. Alternatively you can use head before file sink to limit your to program to specific time. Hope this helps! Priyanka > On 26. Apr 2018, at 01:42, ALEJANDRO RAMIRO MUNOZ <10031

[Discuss-gnuradio] Fundamental question on Sampling rate

Dear All, Mine is more of a fundamental question. I have a 50 MHz (3 db bandwidth) wide QPSK signal. I am aware that Gnuradio blocks can not be used for real time decoding. In order to record the signal and demodulate it correctly, what should the minimum sampling rate be? If the minimum sampling

Re: [Discuss-gnuradio] Fundamental question on Sampling rate

Correct, you need at least 50 MS/s complex (I+Q) which is 100 MS/s or 400 MB/s from an I/O point of view. GNU Radio blocks can be used for real time decoding. Depending on what kind of "decoding" you want to do, the processor may not be able to keep up. On 04/26/2018 04:05 AM, mehtap özkan wro

Re: [Discuss-gnuradio] Fundamental question on Sampling rate

Hello Mehtap, There will have some filter roll off as well, so the rule of thumb is to have a margin in your sample rates. A safe margin is that your bandwidth of interest be no more than 80% of the theoretical bandwidth of your sample rate, so your recommended rate would be 62.5 MS/s. Helpfully 6

Re: [Discuss-gnuradio] Issue with Pybombs installation

Ok it works! Thanks Sumit On 25/04/2018 20:05, Ravi Sharan wrote: Hi Sumit, Q1 - You might have installed libuhd-dev as a system-wide package using apt-get (if you're using ubuntu). Removing/uninstalling that should work. Q2 - To install other tags/releases of a package in your desired pref

Re: [Discuss-gnuradio] Issue with Pybombs installation

Hello Ravi Sharan, Thank you for your comment, Where can I find the commit associated with a release ? Regards... 2018-04-25 20:05 GMT+02:00 Ravi Sharan : > Hi Sumit, > > Q1 - You might have installed libuhd-dev as a system-wide package > using apt-get (if you're using ubuntu). Removing/unin

Re: [Discuss-gnuradio] Fundamental question on Sampling rate

Unless I'm mistaken the B210 can do 8 bit sample depth, giving you 1 Gbps data rate at 62.5 MS/s. This might help. On Thu, Apr 26, 2018 at 6:11 AM, Derek Kozel wrote: > Hello Mehtap, > > There will have some filter roll off as well, so the rule of thumb is to > have a margin in your sample rate

Re: [Discuss-gnuradio] Issue with Pybombs installation

Hello Erislandy, The git tag of a release can be found online at Github. https://github.com/gnuradio/gnuradio/tags If you have the repository checked out then you can use git show > git show v3.7.12.0 commit e4acf4f2f0623fa3ef25dae234b22293d94cd89a (tag: v3.7.12.0) Author: Marcus Müller Date:

Re: [Discuss-gnuradio] Fundamental question on Sampling rate

The B2x0 family of USRPs can do 16, 12, and 8 bit complex samples over the USB cable. 12 bit ends up incurring CPU load to convert back into 16 bit values on the host computer, but saves on USB throughput, useful on some computers. The maximum sample rate is 61.44 MS/s using one channel. UHD can th

Re: [Discuss-gnuradio] Meaning of header_payload_demux0 - Parser returned #f

Bump. Alex Roberts | Research Engineer | Applied Power Division (11) Southwest Research Institute | (210) 522-6014 | alex.robe...@swri.org [SwRI Logo] From: Roberts, Alex S. Sent: Tuesday, April 10, 2018 1:13 PM To: discuss-gnuradio@gnu.org Sub

Re: [Discuss-gnuradio] CIC + halfband filter compensation

Hi Geoff, might be a good idea to ask this on usrp-us...@lists.ettus.com, because these CICs are not part of GNU Radio :) Anyway: There's nothing much to interpret about CIC responses; they are well-known. The length (and potentially order, as in exponent) of the CIC used depends on your specific

Re: [Discuss-gnuradio] CIC + halfband filter compensation

> From: Geoffrey Mainland > Date: Wed, 25 Apr 2018 16:39:11 -0400 > > I hope you will forgive a few naive signal processing questions :) > > 1) What is the frequency response of the CIC and halfband filters in > the > USRP? This was addressed long ago on the mailing list > (https: