From laforge at gnumonks.org Tue Nov 5 15:58:25 2013 From: laforge at gnumonks.org (Harald Welte) Date: Tue, 5 Nov 2013 16:58:25 +0100 Subject: OsmoDevCon 2014 / Date / Venue Message-ID: <20131105155825.GK12353@nataraja.gnumonks.org> Hi all, time is moving fast, and I want to start some initial discussion and planning for OsmoDevCon 2014. There are basically four questions which I'm raising below. Please provide your feedback to the osmocom-event-orga mailing list only, to avoid cross-posting over all the project lists. = Who? = My intention is to keep it an 'active developer/contributer only' event, like we had it before. I would also want to keep the group relatively small, to keep the 'Osmocom family' atmosphere. If desired, we could have one half or full day of public prsentations in a larger auditorium, but the developer meeting should be a close group, as known so far. = Where? = If we keep the number of attendees within the same range as this year, then I'm sure we could again hold it at the same venue. I know it is not perfect, but it is a place that we have access to, 24 hours per day, and free of cost for community projects like osmocom.org. If the community wants a larger event, then this is something that would require more funds and much more time organizing. And that is something that I personally could not offer to take care of, sorry. I'm happy to attend and support any larger events, but I'm unable to take care of fundraising and venue research. = When? = Q1/2014. In January, I'm not aware of any 'blocker' events. February, there is Fosdem (Feb 1 + Feb 2), and MWC from Feb 24 through Feb 27. In March there is CeBIT (March 10-14) and Easter holidays (with EasterHegg March 17-21). Did I miss any other FOSS / mobile event that might clash in Q1? So my preference woudl be to do it either late January (23-26) or in February (6-9 or 13-16). Any preferences regarding preferred schedule? Once we have some concencus here on the list [and we want to do it in the same size / venue], I'll talk to IN-Berlin. = What? = I think that question is easy to answer, if we have the above three figured out... There's no shortage of topics, I suppose. You can start adding your suggestions to http://openbsc.osmocom.org/trac/wiki/OsmoDevCon2014 Regards, Harald -- - Harald Welte http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6) -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 190 bytes Desc: Digital signature URL: From felibol at yahoo.com Tue Nov 26 14:15:43 2013 From: felibol at yahoo.com (Furkan Elibol) Date: Tue, 26 Nov 2013 06:15:43 -0800 (PST) Subject: Realtime receiving live tetra signal; Message-ID: <1385475343.68205.YahooMailNeo@web122405.mail.ne1.yahoo.com> Hi Folks, I have a sample tetra signal without encryption. I generate a test signal from the tetra sample with a vector signal generator.(@394MHz carrier and 96KHz sampling rate) I try to receive and listen this test signal realtime with USRP N200 and osmocom tetra. I combine all the osmocom tetra parts in one script (seen below) but speech is not continuous and aplay gives underrun warnings. The cpu usage is approximately %30 and there is no memory or disk write/read speed problem. I wonder what is the problem and how can i listen realtime tetra speech. I also test demodulator offline and then try the rest of the script realtime and there is no problem, i can listen continuous speech without any gap. So i suspect from the demodulator performance.. I am using Ubuntu 12.04 64bit, Gnuradio 3.6.5.1, UHD 003.005, SSD disk, 8GB Ram, Intel i7-3520M CPU. Thanks.. ------------------------------------------------------------------ #!/bin/bash sudo sysctl -w net.core.wmem_max=1048576 sudo sysctl -w net.core.rmem_max=50000000 rm /tmp/out.float /tmp/out.bits /tmp/out.codec /tmp/out.pcm /tmp/traffic.out mkfifo /tmp/out.float mkfifo /tmp/out.bits mkfifo /tmp/out.codec mkfifo /tmp/out.pcm mkfifo /tmp/traffic.out ~/Desktop/osmo-tetra/src/demod/python/uhd-tetra_demod.py -f 394E6 -o /tmp/out.float & float_to_bits /tmp/out.float /tmp/out.bits &? tetra-rx /tmp/out.bits & cdecoder /tmp/traffic.out /tmp/out.codec & sdecoder /tmp/out.codec /tmp/out.pcm & aplay -fS16_LE /tmp/out.pcm rm /tmp/out.float rm /tmp/out.bits rm /tmp/out.codec rm /tmp/out.pcm ------------------------------------------------------------------ Furkan Elibol PhD Candidate Ozyegin University -------------- next part -------------- An HTML attachment was scrubbed... URL: From furkan.elibol at ozu.edu.tr Tue Nov 26 07:22:07 2013 From: furkan.elibol at ozu.edu.tr (Furkan Elibol) Date: Tue, 26 Nov 2013 09:22:07 +0200 Subject: Realtime receiving live tetra signal; Message-ID: <6702C8C0-B46B-41BE-8233-49CDED2229B7@ozu.edu.tr> Hi Folks, I have a sample tetra signal without encryption. I generate a test signal from the tetra sample with a vector signal generator.(@394MHz carrier and 96KHz sampling rate) I try to receive and listen this test signal realtime with USRP N200 and osmocom tetra. I combine all the osmocom tetra parts in one script (attached) but speech is not continuous and aplay gives underrun warnings. The cpu usage is approximately %30 and there is no memory or disk write/read speed problem. I wonder what is the problem and how can i listen realtime tetra speech. I also test demodulator offline and then try the rest of the script realtime and there is no problem, i can listen continuous speech without any gap. So i suspect from the demodulator performance.. I am using Ubuntu 12.04 64bit, Gnuradio 3.6.5.1, UHD 003.005, SSD disk, 8GB Ram, Intel i7-3520M CPU. Thanks.. -------------- next part -------------- A non-text attachment was scrubbed... Name: tetraAllinOne Type: application/octet-stream Size: 622 bytes Desc: not available URL: -------------- next part -------------- ------------------------------------------------------------------ #!/bin/bash sudo sysctl -w net.core.wmem_max=1048576 sudo sysctl -w net.core.rmem_max=50000000 rm /tmp/out.float /tmp/out.bits /tmp/out.codec /tmp/out.pcm /tmp/traffic.out mkfifo /tmp/out.float mkfifo /tmp/out.bits mkfifo /tmp/out.codec mkfifo /tmp/out.pcm mkfifo /tmp/traffic.out ~/Desktop/osmo-tetra/src/demod/python/uhd-tetra_demod.py -f 394E6 -o /tmp/out.float & float_to_bits /tmp/out.float /tmp/out.bits & tetra-rx /tmp/out.bits & cdecoder /tmp/traffic.out /tmp/out.codec & sdecoder /tmp/out.codec /tmp/out.pcm & aplay -fS16_LE /tmp/out.pcm rm /tmp/out.float rm /tmp/out.bits rm /tmp/out.codec rm /tmp/out.pcm ------------------------------------------------------------------ Furkan Elibol PhD Candidate Ozyegin University