Re: Also bothered

2023-02-06 Thread Bogdan Diaconescu
Indeed Chris, that is right. ChatGPT is that you? On Monday, February 6, 2023 at 06:12:54 PM GMT+2, Chris Vine wrote: Read it again and you will see the posting was a spoof, artificially mashed up by a random expression generator from a radio/electronics related expression list. 

Re: [Discuss-gnuradio] DVB-T/T2

2015-04-09 Thread Bogdan Diaconescu
this. It was a short iPhone video of a snake in front of our office (we do not have so much snakes here in Germany), and it was fun seeing this transmitted via DVB-T :)  Ralph.  From: Bogdan Diaconescu [mailto:b_diacone...@yahoo.com] Sent: Wednesday, April 8, 2015 5:13 PM To: Ralph A. Schmid, dk5ras; 'Ron

Re: [Discuss-gnuradio] DVB-T/T2

2015-04-08 Thread Bogdan Diaconescu
The DVB-T2 implementation supports T2-Lite, tone reservation PAPR reduction and MISO processing. Ron On 04/07/2015 06:38 AM, Bogdan Diaconescu wrote: Hi Ron, I have not followed the development of DVB-T2/S2 lately. Are there receiver implementations for the T2/S2 or just transmitters

Re: [Discuss-gnuradio] DVB-T/T2

2015-04-08 Thread Bogdan Diaconescu
+ralph=schmid@gnu.org [mailto:discuss-gnuradio-bounces+ralph=schmid@gnu.org] On Behalf Of Bogdan Diaconescu Sent: Wednesday, April 8, 2015 8:01 AM To: Ron Economos; discuss-gnuradio@gnu.org Subject: Re: [Discuss-gnuradio] DVB-T/T2  Ok, it would be useful to have receivers too like

Re: [Discuss-gnuradio] DVB-T/T2

2015-04-08 Thread Bogdan Diaconescu
this in the DVB-T specs at first glance...  Ralph.    From: Bogdan Diaconescu [mailto:b_diacone...@yahoo.com] Sent: Wednesday, April 8, 2015 2:57 PM To: Ralph A. Schmid, dk5ras; 'Ron Economos'; discuss-gnuradio@gnu.org Subject: Re: [Discuss-gnuradio] DVB-T/T2  Hi Ralph,  DVB-T.png shows some u's

Re: [Discuss-gnuradio] DVB-T/T2

2015-04-07 Thread Bogdan Diaconescu
Hi Ron, I have not followed the development of DVB-T2/S2 lately. Are there receiver implementations for the T2/S2 or just transmitters? Thanks, Bogdan On Tuesday, April 7, 2015 1:32 PM, Ralph A. Schmid, dk5ras ra...@schmid.xxx wrote: #yiv0268530338 #yiv0268530338 -- _filtered

Re: [Discuss-gnuradio] Release Announcement: GNU Radio 4.1

2015-04-01 Thread Bogdan Diaconescu
I liked the one with porting to .Net especially that the previous day I got a presentation on a conference with how open source is .Net and how open MS is now :) Bogdan On Wednesday, April 1, 2015 10:56 PM, Monahan-Mitchell, Tim tmona...@qti.qualcomm.com wrote: In the interest

Re: [Discuss-gnuradio] Reed-Solomon en/decoder

2015-03-11 Thread Bogdan Diaconescu
can see a list of wireless applications with some googling. (I'm not sure they are standards or just proposal) Regards, Jeon. 2015-03-11 14:42 GMT+09:00 Bogdan Diaconescu b_diacone...@yahoo.com: HI Jeon, you might try the RS encoder/decoder in my gr-dvbt implementation. There are grc blocks

Re: [Discuss-gnuradio] Reed-Solomon en/decoder

2015-03-10 Thread Bogdan Diaconescu
HI Jeon, you might try the RS encoder/decoder in my gr-dvbt implementation. There are grc blocks that you can use directly after installing gr-dvbt. https://github.com/BogdanDIA/gr-dvbt  Regards,Bogdan On Tuesday, March 10, 2015 9:33 AM, Jeon sjeon87+gnura...@gmail.com wrote: I

Re: [Discuss-gnuradio] ISDB-T Modulation?

2014-06-23 Thread Bogdan Diaconescu
Hi Jordan, I remember a group from Brasil presenting a ISDB-T modulator implemented in gnuradio when I attended wireless innovation forum in 2012. The presentation is here: http://groups.winnforum.org/europe_papers_wednesday#2.3, A Software Defined Radio Approach for Digital Television ISDB-T

Re: [Discuss-gnuradio] GNU Radio Measurement Toolbox -- GSoC '14 Project

2014-05-25 Thread Bogdan Diaconescu
Hi Marcus, I like the approach you take by looking at what real life users will want from gnuradio when transitioning from an academic perspective to realtime system. Measurements are always not enough to understand the specifics of your system so I'm looking forward to see how your project

Re: [Discuss-gnuradio] GNU Radio Measurement Toolbox -- GSoC '14 Project

2014-05-25 Thread Bogdan Diaconescu
Hi Marcus, I like the approach you take by looking at what real life users will want from gnuradio when transitioning from an academic perspective to realtime system. Measurements are always not enough to understand the specifics of your system so I'm looking forward to see how your project

Re: [Discuss-gnuradio] GNU Radio Measurement Toolbox -- GSoC '14 Project

2014-05-25 Thread Bogdan Diaconescu
to fiddling with in-tree source code, but my workings almost never make it to the public, because I always figure they don't address a problem properly or break too much in comparison to what they can possibly improve. On 25.05.2014 19:34, Bogdan Diaconescu wrote: Hi Marcus, I like the approach you take

Re: [Discuss-gnuradio] [USRP-users] usrpN200 + TVRX2 50-860 MHz Rx x 2 for DVB-T

2014-05-09 Thread Bogdan Diaconescu
  On Friday, May 9, 2014 12:09 AM, Nasi nesaz...@mail.ru wrote: you said 'SNR was above a certain level'. How much was it? How did you measure the SNR? Thu, 8 May 2014 12:46:17 -0700 (PDT) от Bogdan Diaconescu b_diacone...@yahoo.com: Hi, I did experiment with real life signals from a local DVB-T

Re: [Discuss-gnuradio] dvb-t project with two USRPN200 devices failure

2014-03-31 Thread Bogdan Diaconescu
Hi, not having access to my setup for now but for the beginning you could try recording the spectrum with your USRP and then use the file source to decode the signal offline. There is a script file apps/capture.sh that I usually use to capture data. You may tweak it for your needs (frequency,

Re: [Discuss-gnuradio] dvb-t project with two USRPN200 devices failure

2014-03-31 Thread Bogdan Diaconescu
data also as you say.  I am using sampling rate of 1 Mbps instead of 10 Mbps which must be the same for static transmission. Isn't it? Mon, 31 Mar 2014 08:23:01 -0700 (PDT) от Bogdan Diaconescu b_diacone...@yahoo.com: Hi, not having access to my setup for now but for the beginning you could

Re: [Discuss-gnuradio] dvb-t project with two USRPN200 devices failure

2014-03-31 Thread Bogdan Diaconescu
helps. Marcus On 31.03.2014 17:52, Nasi wrote: ohhh, now I understand. It produces in the transmitter side - which probably means underflow with my laptop. Do you know how to decrease this power? Mon, 31 Mar 2014 08:44:49 -0700 (PDT) ?? Bogdan Diaconescu b_diacone...@yahoo.com

Re: [Discuss-gnuradio] How to use a single-threaded scheduler

2014-03-31 Thread Bogdan Diaconescu
On older gnuradio releases there was an environment variable to set so that it will switch to single threaded scheduler. Cannot remember the name, though. Bogdan On Monday, March 31, 2014 7:35 PM, Tommy Tracy II tj...@virginia.edu wrote: Dear list, Is there any way to use the

Re: [Discuss-gnuradio] How to use a single-threaded scheduler

2014-03-31 Thread Bogdan Diaconescu
*v = getenv(GR_SCHEDULER); ... and you need to set it to STS: export GR_SCHEDULER=STS ./my_gr_flowgraph.py Greetings, Marcus On 31.03.2014 18:49, Bogdan Diaconescu wrote: On older gnuradio releases there was an environment variable to set so that it will switch to single threaded scheduler

Re: [Discuss-gnuradio] GSOC 14 proposal for project Vector Network Analyzer

2014-03-14 Thread Bogdan Diaconescu
Hi Mitul, one suggestion regarding the output of the VNA: since you do scattered parameters calculation, you may want to include also b, Y, h, z (I think you calculate this) parameters output. Here is an old Agilent app note with formulas between those parameters in appendix B:

Re: [Discuss-gnuradio] Proposal for GSoC on gr-gsm

2014-03-11 Thread Bogdan Diaconescu
Hi Zhenhua, gr-gsm should be a good project for you and for the community. I wish you success. You may want to look at the slow frequency hopping implementation of airprobe that is placed here: https://github.com/BogdanDIA/airprobe-hopping. It uses PFB to split a 20mhz band received with

Re: [Discuss-gnuradio] Fwd: Proposal for GSoC on gr-gsm

2014-03-11 Thread Bogdan Diaconescu
-03-11 16:00 GMT+08:00 Subject: Re: [Discuss-gnuradio] Proposal for GSoC on gr-gsm To: Bogdan Diaconescu b_diacone...@yahoo.com mailto:b_diacone...@yahoo.com Thank you, Bogdan. Your work is a great help in developing the channel hopping part. As there are only 14 weeks in GSoC

Re: [Discuss-gnuradio] QPSK over air

2014-02-26 Thread Bogdan Diaconescu
Hi Mark, the gr-dvbt has a QPSK, QAM-16 and QAM-64 implementation of constellation for both Tx/Rx. The standard it implements is ETSI 300 744 which is OFDM based in which each subcarier is modulated using the modulations above. Regards, Bogdan On Tuesday, February 25, 2014 8:12 PM,

Re: [Discuss-gnuradio] Google Summer of Code 2014 applicant : Optimization with VOLK

2014-02-25 Thread Bogdan Diaconescu
Hi Abhishek, When implemented gr-dvbt (https://github.com/BogdanDIA/gr-dvbt) I used VOLK in many places to speed-up the processing. However, there is a great deal of speed-up that still need to be achieved on both Tx/Rx in order to lower cpu cycles consumption so there are a lot of challenges

Re: [Discuss-gnuradio] Google Summer of Code 2014 applicant : Optimization with VOLK

2014-02-25 Thread Bogdan Diaconescu
depuncturer part of the decoder or at least aware of that. On Tue, 2/25/14, Tom Rondeau t...@trondeau.com wrote: Subject: Re: [Discuss-gnuradio] Google Summer of Code 2014 applicant : Optimization with VOLK To: Bogdan Diaconescu b_diacone

Re: [Discuss-gnuradio] Channel Estimation in benchmark OFDM Code

2013-04-17 Thread Bogdan Diaconescu
Since you mentioned this, the code in gr-digital performs channel estimation base on known pilots. It is in the ./gr-digital/lib/digital_ofdm_frame_acquisition.cc Channel estimation is based on preamble which contains known pilots each second carrier. Therefore the unknown carrier channel

Re: [Discuss-gnuradio] Data lost whe using big file sources

2012-04-13 Thread Bogdan Diaconescu
. This is probably next step to investigate. The results so far: moslty learning gnuradio internals, problem is still hidden. Thanks, Bogdan From: Bogdan Diaconescu Subject: Re: [Discuss-gnuradio] Data lost whe using big file sources To: discuss-gnuradio@gnu.org, Martin Braun martin.br...@kit.edu

Re: [Discuss-gnuradio] Data lost whe using big file sources

2012-04-13 Thread Bogdan Diaconescu
--- On Fri, 4/13/12, Martin Braun martin.br...@kit.edu wrote: From: Martin Braun martin.br...@kit.edu Subject: Re: [Discuss-gnuradio] Data lost whe using big file sources To: discuss-gnuradio@gnu.org Date: Friday, April 13, 2012, 10:38 AM On Thu, Apr 12, 2012 at 11:14:37PM -0700, Bogdan

[Discuss-gnuradio] Data lost whe using big file sources

2012-04-10 Thread Bogdan Diaconescu
Hello gnuradio fellows, I have an issue that appears in all gnuradio versions I used lately (I started with 3.3 and last week I updated to latest from git) and I thought I should post here before allocating the time to look into it by myself. I'm modifying a gnuradio block that is connected

Re: [Discuss-gnuradio] Data lost whe using big file sources

2012-04-10 Thread Bogdan Diaconescu
, Bogdan Diaconescu wrote: Hello gnuradio fellows, I have an issue that appears in all gnuradio versions I used lately (I started with 3.3 and last week I updated to latest from git) and I thought I should post here before allocating the time to look into it by myself. I'm modifying

Re: [Discuss-gnuradio] openbts for n210

2011-12-27 Thread Bogdan Diaconescu
Hello, I installed the OpenBTS for N210 as an experiment couple of months ago on Ubuntu 10.04. It worked without problems with SMS and calls between two phones. I did use it just for a day and the main interest was to clarify couple of questions regarding GSM standard by looking at