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Osmocom GSM/GPRS/EGPRS transceiver, originally forked from OpenBTS transceiver. For building SDR based GSM BTS with osmo-bts-trx.
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README.md

About OsmTRX

OsmoTRX is a software-defined radio transceiver that implements the Layer 1 physical layer of a BTS comprising the following 3GPP specifications:

  • TS 05.01 "Physical layer on the radio path"
  • TS 05.02 "Multiplexing and Multiple Access on the Radio Path"
  • TS 05.04 "Modulation"
  • TS 05.10 "Radio subsystem synchronization"

OsmoTRX is based on the transceiver code from the OpenBTS project, but setup to operate independently with the purpose of using with non-OpenBTS software and projects, while still maintaining backwards compatibility with OpenBTS when possible. Currently there are numerous features contained in OsmoTRX that extend the functionality of the OpenBTS transceiver. These features include enhanced support for various embedded platforms - notably ARM - and dual channel diversity support for the Fairwaves umtrx.

Homepage

The official homepage of the project is https://osmocom.org/projects/osmotrx/wiki/OsmoTRX

GIT Repository

You can clone from the official osmo-trx.git repository using

    git clone git://git.osmocom.org/osmo-trx.git

There is a cgit interface at http://git.osmocom.org/osmo-trx/

Documentation

Doxygen-generated API documentation is generated during the build process, but also available online for each of the sub-libraries at User Manual for OsmoTRX can be generated during the build process, and is also available online at http://ftp.osmocom.org/docs/latest/osmotrx-usermanual.pdf.

Mailing List

Discussions related to OsmoTRX are happening on the openbsc@lists.osmocom.org mailing list, please see https://lists.osmocom.org/mailman/listinfo/openbsc for subscription options and the list archive.

Please observe the Osmocom Mailing List Rules when posting.

Contributing

Our coding standards are described at https://osmocom.org/projects/cellular-infrastructure/wiki/Coding_standards

We us a gerrit based patch submission/review process for managing contributions. Please see https://osmocom.org/projects/cellular-infrastructure/wiki/Gerrit for more details

The current patch queue for OsmoTRX can be seen at https://gerrit.osmocom.org/q/project:osmo-trx+status:open