WikiStart » History » Version 15
ahuemer, 02/19/2016 10:50 PM
Add 31C3 presentation
1 | 2 | laforge | = GEO Mobile Radio = |
---|---|---|---|
2 | 1 | ||
3 | 2 | laforge | This is the homepage of the Osmocom sub-project ''GEO Mobile Radio''. |
4 | 1 | ||
5 | 2 | laforge | It is collecting information and software related to the ETSI GEO Mobile Radio specification and its practical implementations like the [wiki:Thuraya] satellite phone network |
6 | 1 | ||
7 | 2 | laforge | GEO Mobile Radio is a set of specifications describing a satellite based mobile phone network. |
8 | 1 | ||
9 | 11 | laforge | [[BlogList(format=float,recent=5,max_size=350)]] |
10 | |||
11 | 3 | laforge | == Radio aspects == |
12 | |||
13 | It uses the L-band frequencies 1634 to 1656 MHz (earth to space) and 1532.5 to 1554.5 MHz (space to earth) for communication |
||
14 | between mobile phones and the respective satellites. The polarization is circular (left) and the modulation is pi/4 QPSK, using |
||
15 | a channel spacing of 31.25 kHz |
||
16 | |||
17 | == Index == |
||
18 | 2 | laforge | * [wiki:GMR_Specifications] -- An Introduction and Overview into the GMR specifications |
19 | 12 | * [wiki:SpeechCodec] -- The voice codec |
|
20 | * [wiki:A5-GMR-1] -- The cipher |
||
21 | 8 | * Devices: |
|
22 | * [wiki:Thuraya_SO2510] -- A popular handset for use in the [wiki:Thuraya] system. |
||
23 | * [wiki:Thuraya_SG2520] -- A dual-mode GSM/ [wiki:Thuraya] handset running WindowsCE. |
||
24 | 7 | laforge | * [wiki:Thuraya_Beams] -- Information about the Thuraya beams |
25 | 1 | * [http://bit.ly/nInTOi] -- Google Maps view of the Thuraya beams that we have found so far |
|
26 | 7 | laforge | * [wiki:OsmoGMR_Software] -- Software that we wrote for GMR analysis |
27 | 8 | * [wiki:GettingStarted] -- A small guide to get you going |
|
28 | 9 | steve-m | * [http://cgit.osmocom.org/cgit/osmo-gmr/ Browse code] -- Browse the OsmocomGMR source code |
29 | 6 | laforge | * [wiki:Receiver_Setup] -- How to receive GMR signals coming down from a satellite |
30 | 10 | laforge | |
31 | == Presentations == |
||
32 | * 28C3 talk by Sylvain |
||
33 | 15 | ahuemer | * Video: http://media.ccc.de/browse/congress/2011/28c3-4688-en-introducing_osmo_gmr.html |
34 | 10 | laforge | * Slides: http://events.ccc.de/congress/2011/Fahrplan/attachments/2027_28c3_introducing_osmocom_gmr.pdf |
35 | 13 | horiz0n | |
36 | * Recording of a "Wireless Hacking: GMR-1 / Thuraya" talk by Sylvain Munaut in the Moscow hackerspace Neuron. |
||
37 | 1 | * Video: http://www.youtube.com/watch?v=IpZPamI2vTk |
|
38 | 15 | ahuemer | |
39 | * 31C3 talk by Sylvain |
||
40 | * Description: https://events.ccc.de/congress/2014/Fahrplan/events/6267.html |
||
41 | * Video: http://media.ccc.de/browse/congress/2014/31c3_-_6267_-_en_-_saal_g_-_201412271600_-_osmo-gmr_what_s_up_with_sat-phones_-_sylvain_munaut.html |
||
42 | * Slides: https://events.ccc.de/congress/2014/Fahrplan/system/attachments/2496/original/31c3_gmr.pdf |
||
43 | 14 | ||
44 | == Community == |
||
45 | |||
46 | * IRC: #osmocom on FreeNode |
||
47 | * Mailing list : http://lists.osmocom.org/mailman/listinfo/gmr |