Wiki » History » Version 8
ptrkrysik, 09/06/2018 09:19 AM
1 | 2 | ptrkrysik | h1. Welcome to [[SDR PHY for OsmocomBB]] project |
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2 | 1 | ptrkrysik | |
3 | h2. Introduction |
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4 | 2 | ptrkrysik | |
5 | 7 | ptrkrysik | [[OsmocomBB:]] project provides almost free software GSM mobile station implementation, from Layer 1 to Layer 3. The last non-free parts are: layer 1 and low level signal processing that are implemented in a non-free DSP software which is inside of the hardware platform that [[OsmocomBB:]] is currently based on (mainly reverse engineered [[OsmocomBB:TI_Calypso_Chipset|Calypso]] based mobile phones). |
6 | 2 | ptrkrysik | |
7 | 7 | ptrkrysik | The [[SDR PHY for OsmocomBB]] aims to replace these non-free parts through use Software Defined Radio devices and by creating missing software part for tasks such as scheduling, voice encoding/decoding, channel encoding/decoding, burst modulation/demodulation and controlling SDR hardware. In order to achieve this goal the [[SDR PHY for OsmocomBB]] brings together [[OsmocomBB:]] and [[gr-gsm:]] projects, where the role of [[gr-gsm:]] is to provide GSM bursts transmission and reception with everything starting from channel coding/decoding being done in [[OsmocomBB:]]. |
8 | 1 | ptrkrysik | |
9 | 7 | ptrkrysik | Having support for general purpose SDR hardware has additional advantage of not being locked to a single and already obsolete hardware platform. Adding support for a new well documented SDR platform is significantly easier than reverse-engineering mobile phone's hardware and software. This could sustain [[OsmocomBB:]] project's life even in the absence of hacked mobile phones it is able to run on. |
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11 | 8 | ptrkrysik | A comparison of [[OsmocomBB:TI_Calypso_Chipset|Calypso]] based and SDR based approaches can be found on [[SDR PHY vs Calypso]] subpage. |
12 | 3 | ptrkrysik | |
13 | h2. Project status |
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15 | Known limitations (not implemented): |
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17 | * Automatic PHY delay measurement |
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18 | * AGC (Automatic Gain Control) |
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19 | * Power measurement |
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21 | Work in progress: |
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23 | * Docker scripts (Dockerfiles) |
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24 | * GAPK based audio back-end |
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25 | * TCH/H implementation |
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26 | * Frequency Hopping |
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27 | |||
28 | Future plans: |
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30 | * Extend supported hardware list (Soapy?) |
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31 | * PC/SC physical SIM interface |
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32 | * AMR (Adaptive Multi-Rate) |
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34 | 5 | ptrkrysik | h2. Sponsors |
35 | 3 | ptrkrysik | |
36 | 4 | ptrkrysik | The "project":https://nlnet.nl/project/sdr-phy/ has support of NLnet Foundation |
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38 | !https://osmocom.org/attachments/download/3315/nlnet_logo_320x120.png(fsdafs)!:https://nlnet.nl. |