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ptrkrysik, 09/04/2018 12:47 PM
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| 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 | "OsmocomBB":https://osmocom.org/projects/baseband/wiki 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 that is inside of the harware platform that "OsmocomBB":https://osmocom.org/projects/baseband/wiki is based on currently (mostly reverse engineered "Calypso":https://osmocom.org/projects/baseband/wiki/TI_Calypso_Chipset based mobile phones). |
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| 7 | 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 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":https://osmocom.org/projects/baseband/wiki and "gr-gsm":https://osmocom.org/projects/gr-gsm/wiki projects, where the role of "gr-gsm":https://osmocom.org/projects/gr-gsm/wiki is to provide GSM bursts transmission and reception with everything starting from channel coding/decoding being done in OsmocomBB. |
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| 9 | Having support for general purpose SDR hardware has additional advantage of not being locked to a single and already obsolete harware platform. Adding support for new well documented SDR platforms is significantly easier than reverse-engineering mobile phones hardware and software. This could sustain "OsmocomBB":https://osmocom.org/projects/baseband/wiki project's life even in the absence of hacked mobile phones it is able to run on. |
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| 10 | 3 | ptrkrysik | |
| 11 | h2. Project status |
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| 13 | Known limitations (not implemented): |
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| 15 | * Automatic PHY delay measurement |
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| 16 | * AGC (Automatic Gain Control) |
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| 17 | * Power measurement |
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| 18 | |||
| 19 | Work in progress: |
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| 21 | * Docker scripts (Dockerfiles) |
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| 22 | * GAPK based audio back-end |
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| 23 | * TCH/H implementation |
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| 24 | * Frequency Hopping |
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| 26 | Future plans: |
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| 28 | * Extend supported hardware list (Soapy?) |
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| 29 | * PC/SC physical SIM interface |
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| 30 | * AMR (Adaptive Multi-Rate) |
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| 32 | h3. Sponsors |
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| 34 | 4 | ptrkrysik | The "project":https://nlnet.nl/project/sdr-phy/ has support of NLnet Foundation |
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| 36 | !https://osmocom.org/attachments/download/3315/nlnet_logo_320x120.png(fsdafs)!:https://nlnet.nl. |
