Open Source Baseband Firmware for 2G Cellular Networks
GSM/2G is the most ubiquitous mobile communication standard worldwide. Millions of people use it every day. An FPGA testbed with digital signal processing blocks from the RazorEDGE project on an ML605 board  and analog processing on the evalEDGE FMC module is available. The testbed supports only physical layer operations. A separate board with a CPU is required for baseband firmware. The Baseband Meets CPU project implements the PULP CPU next to the digital signal processing blocks on the FPGA board. However, there is no complete and open source baseband firmware available for 2G operation.
In this project, the freely available real-time OS FreeRTOS  shall be ported onto the PULP CPU. Subsequently, the L2/L3 source code from Open Source GSM Phone Call, which is based on OsmocomBB  and a custom driver, shall run on top of FreeRTOS. This base can then be taken to roll-out an open source baseband software project with support beyond voice calls. A protocol tester  or OpenBTS  can be used as test environment.
- Looking for 1-2 Semester/Master students
- Contact: Benjamin Weber
- Interest in mobile communication
- 15% Theory
- 70% Implementation
- 15% Testing
 Virtex-6 FPGA ML605 Evaluation Kit, June 2015.
 OsmocomBB, June 2015.
 E5515C 8960 Series 10 Wireless Communications Test Set, June 2015.
 OpenBTS | Open Source Cellular Infrastructure, June 2015.