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Revision 6 (fixeria, 09/05/2018 12:52 PM) → Revision 7/30 (ptrkrysik, 09/06/2018 09:18 AM)
h1. Welcome to [[SDR PHY for OsmocomBB]] project h2. Introduction [[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 that is inside of the hardware platform that [[OsmocomBB:]] is currently based on (mainly (mostly reverse engineered [[OsmocomBB:TI_Calypso_Chipset|Calypso]] 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 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:]]. 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 platforms is significantly easier than reverse-engineering mobile phone's phones hardware and software. This could sustain [[OsmocomBB:]] project's life even in the absence of hacked mobile phones it is able to run on. A detailed comparison of [[OsmocomBB:TI_Calypso_Chipset|Calypso]] based and SDR based approaches can be found on [[SDR PHY vs Calypso]] subpage. 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) h2. Sponsors The "project":https://nlnet.nl/project/sdr-phy/ has support of NLnet Foundation !https://osmocom.org/attachments/download/3315/nlnet_logo_320x120.png(fsdafs)!:https://nlnet.nl.