Wiki » History » Revision 2
Revision 1 (ptrkrysik, 08/31/2018 11:27 AM) → Revision 2/30 (ptrkrysik, 09/04/2018 12:38 PM)
h1. Welcome to [[SDR SDR PHY for OsmocomBB]] 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.
