gmr

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55 discussions

Receiver Error - Resolved
by sadi 1 05 Mar '14

05 Mar '14

Hi All, After long long struggle, I have successfully installed OsmocomGmr. For ease of others, I want to share my experience, My OS is Ubuntu - 12.04 I have find following link for gnuRadio installation, it is very well written document. http://www.orbit-lab.org/wiki/Documentation/GNURadio/InstallationOnUbuntu12… This document guided me how to install UHD / GNU Radio and other stuff in 6 step. Software Installed are : UHD : release_003_005_002 GNU Radio : gnuradio-3.6.4.1 After Installation, I tested the connectivity of uhd / gnuRadio by following utilities: 1. uhd_find_devices 2. uhd_usrp_probe 3. gnuradio-config-info -v For testing of input signal I used uhd_fft utility, Signals were coming. I have usrp2 so i used following command for signal reception: ./gmr_multi_rx --gmr1-dl 802 -P /home/zia/Desktop/ --addr=type=usrp2 -a RX2 -S A:0 -T 10 Thanks, Zafar

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Receiver Error
by sadi 1 28 Jan '14

28 Jan '14

Hi, I have resolve some of my previous issue and from few days i am stuck on following problem: *********************************** root@sadi:/home/zia/osmo-gmr/utils/gmr_multi_rx# ./gmr_multi_rx --gmr1-dl 978 -a RX2 -S A:0 --addr=usrp2 -T 10 linux; GNU C++ version 4.6.3; Boost_104601; UHD_003.006.002-rc2 Given gmr1-dl ARFCNs: 978 = 1555.562500 MHz Required bandwidth is: 31.250000 kHz Creating the UHD device... -- Opening a USRP2/N-Series device... -- Current recv frame size: 1472 bytes -- Current send frame size: 1472 bytes -- Detecting internal GPSDO.... Found a Jackson Labs GPS -- found -- Detecting internal GPSDO.... Found a Jackson Labs GPS -- found -- Detecting internal GPSDO.... Found a Jackson Labs GPS -- found terminate called after throwing an instance of 'uhd::runtime_error' what(): RuntimeError: fifo ctrl timed out looking for acks Aborted (core dumped) root@sadi:/home/zia/osmo-gmr/utils/gmr_multi_rx# *********************************************************************************************** Going through GMR mailing list I have found that you posted same problem in Oct-2012. I have follow the Mr,Sylvain advice and run uhd_fft utility, that is working fine and showing signal on screen. Can u plz guide me how to resolve this issue. (i am using Ubuntu 12.04 OS). Thanxs Zia

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[RFC] [ADMIN] Making lists subscriber-only?
by Harald Welte 15 Jan '14

15 Jan '14

Dear all, so far the osmocom.org mailing lists have always been in a 'non-members are manually moderated' mode. This has created a lot of work for manual list moderation, where a lot of the messages caught are simply spam, and only the occasional valid message is being received. I'd like to thank the list moderators for taking care of this. However, in more recent discussions, we were considering to move the lists to a completely closed mode, i.e. postings would automatically be rejected from non-members. The automatic response would contain a description of how to subscribe in 'nomail' mode, i.e. to subscribe in a way to be able to post to the list, while still not receiving any incoming traffic. The latter should be fine for occasional posters who don't want the bulk e-mail that goes with a full/regular subscription. Please provide feedback in case you disagree with that change. Unless there is major opposition, we will likely transition to the 'closed' mode within one month. Thanks, Harald -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

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gmr Receive Error
by sadi 1 15 Jan '14

15 Jan '14

Hi all, I am zia. I successfully installed softwares Uhd_003.006.002/GNU Radio 3.6.5.1/Boost 1.43.1 and gmr on Ubuntu 12.04,but when i run signal capturing command I receive no file at output: //*********************************************************************// zia:~/osmo-gmr/utils/gmr_multi_rx$ sudo ./gmr_multi_rx --gmr1-dl 943 -a RX1 -S A:0 -T 10 --add=usrp2 linux; GNU C++ version 4.6.3; Boost_104601; UHD_003.006.002-rc2 Given gmr1-dl ARFCNs: 943 = 1554.468750 MHz Required bandwidth is: 31.250000 kHz Creating the UHD device... zia~/osmo-gmr/utils/gmr_multi_rx$ //*****************************************************************************// (I am running USRP NI 2930) Any help will be highly appreciated. Thanxs Zia

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GMR Standard for Inmarsat
by i040184 Ammar Ikram 01 Jan '14

01 Jan '14

Respected Sir/Madam, Sorry to bother you considering how precious the time is for you professionals but i want some guidance from you. Sir/Madam i want to learn about GMR standard for Inmarsat, its frame structure, channel coding (FEC), ETSI Standard (GMR 1 or GMR 2) etc. Actually i want to learn about how to decode Inmarsat data. Hope to hear good from you soon. Regards, Ammar Ikram Pakistan

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fix linking
by ☎ 06 Dec '13

06 Dec '13

Hi. Without attached patch "make TARGET=uhd" fails on latest ubuntu. Could be ubuntu-specific problem but I think it should be safe on other systems as well. Please test and apply. -- best regards, Max, http://fairwaves.ru

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[PATCH] fix linking on ubuntu
by Max 03 Dec '13

03 Dec '13

--- utils/gmr_multi_rx/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/utils/gmr_multi_rx/Makefile b/utils/gmr_multi_rx/Makefile index ea29d26..d9167a7 100644 --- a/utils/gmr_multi_rx/Makefile +++ b/utils/gmr_multi_rx/Makefile @@ -18,7 +18,7 @@ CFLAGS += $(shell pkg-config --cflags $(PKGLIBS)) LDLIBS = $(shell pkg-config --libs $(PKGLIBS)) \ -lboost_program_options \ -lboost_system \ - -lboost_thread \ + -lboost_thread -lpthread \ all: gmr_multi_rx -- 1.8.3.2 --------------070804030808040001080208--

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[ANNOUNCE] OsmoDevCon 2013-04-04 till 2013-04-07, Berlin
by Harald Welte 26 Feb '13

26 Feb '13

Dear fellow Osmcoom developers, it is my pleasure to finally announce the date + venue of OsmoDevCon 2013: Date: April 04 through April 07, 2013 Place: IN-Berlin, Lehrter Str. 53, Berlin Like last year, this is an event for developers of the various Osmocom proejects. Reservation and confirmation of reservation is required. The event is free of charge. The Room is made available by IN-Berlin e.V., an Internet related non-profit organization. Lunch catering will be sponsored (so far by sysmocom GmbH, but if any other sponsors come up, we are happy to share the cost). So all you have to cover is your own travel + accomodation costs, as well as breakfast and dinner. If you are an active developer and cannot afford travel/accomodation, please let me know and I'll see if we can do something about it. If you would like to attend, please send a message to laforge(a)gnumonks.org applying for registration of the event. The registration deadline is March 5, i.e. one week from now. There is no detailed schedule of talks yet. I will start a separate discussion suggesting / collecting topics in the next couple of days. More information is (and will be made) available at http://openbsc.osmocom.org/trac/wiki/OsmoDevCon2013 Further discussion regarding the event should be directed at the osmocom-event-orga(a)lists.osmocom.org mailing list, to avoid cross-posting over the various project-specific lists. Best regards and happy hacking, Harald -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

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gmr receive error
by ty 27 Oct '12

27 Oct '12

Hi all. My names are tyrus from Kenya, Africa. I managed to set up Osmogmr successfully but when I fired it up using the following commands, I receive the following error. tyrus@jedi-council:~/gmr_multi_rx$ ./gmr_multi_rx --gmr1-dl 941 -a RX2 -S A:0 --addr=usrp2 -T 10 linux; GNU C++ version 4.4.5; Boost_104200; UHD_003.004.002-159-g0d5cef73 Given gmr1-dl ARFCNs: 941 = 1554.406250 MHz Required bandwidth is: 31.250000 kHz Creating the UHD device... -- Opening a USRP2/N-Series device... -- Current recv frame size: 1472 bytes -- Current send frame size: 1472 bytes *terminate called after throwing an instance of 'uhd::runtime_error'* * what(): RuntimeError: fifo ctrl timed out looking for acks* Aborted I'm running off USRP N200 with a WBX board with UHD version 003.004.002-159. Any assistance will be highly appreciated. -tyrus

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Re: a question
by Sylvain Munaut 24 May '12

24 May '12

Hi, Please ask your questions on the mailing lists preferrably. I've redirected this mail to it because it doesn't contain any sensitive info and the response can be useful to others. > I have learned a lot of things from your articles about GMR-1-A5. Thanks. But if you mean the http://gmr.crypto.rub.de/ , I'm not the author :) > But i have a question,Why you say that "DALMA V2.0 (might be AMBE codec > IC)"? This is incorrect. The picture and embedded 'text' dates back from before we knew what that chip was and we thought it might be the CODEC chip. This turned out to be incorrect, it's just an ASIC that does the timing sensitive part of the radio modem and some signal processing. > Maybe the ambe codec is accomplished in TMS320C55x of the OMAP IC. Yes, we know it is in the OMAP DSP. But unfortunately the code is not that small and not really easy to read. If you want to give it a shot and try to find it, please go ahead, that'd be a great help :) Cheers, Sylvain

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