Wiki » History » Revision 4
Revision 3 (ptrkrysik, 09/04/2018 12:44 PM) → Revision 4/30 (ptrkrysik, 09/04/2018 12:47 PM)
h1. Welcome to [[SDR PHY for OsmocomBB]] project h2. Introduction "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). 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. 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. h2. Project status Known limitations (not implemented): * Automatic PHY delay measurement * AGC (Automatic Gain Control) * Power measurement Work in progress: * Docker scripts (Dockerfiles) * GAPK based audio back-end * TCH/H implementation * Frequency Hopping Future plans: * Extend supported hardware list (Soapy?) * PC/SC physical SIM interface * AMR (Adaptive Multi-Rate) h3. Sponsors The "project":https://nlnet.nl/project/sdr-phy/ project has support of NLnet Foundation !https://osmocom.org/attachments/download/3315/nlnet_logo_320x120.png(fsdafs)!:https://nlnet.nl. [nlnet_logo_320x120.png]
