commit | 35536807ab9a4265c6eb9ec62793d0c06b9b662b | [log] [tgz] |
---|---|---|
author | Tom Tsou <tom.tsou@ettus.com> | Thu Nov 24 19:24:32 2016 +0700 |
committer | Tom Tsou <tom@tsou.cc> | Tue Apr 11 00:36:08 2017 +0000 |
tree | 686df7908dddc39f50570aeadc0b2075a3b184aa | |
parent | dda70fca7979d86e04bba9ba5bad32162327550c [diff] |
core/conv: implement optimized Viterbi decoder Add a separate, faster convolution decoding implementation for rates up to N=4 and constraint lengths of K=5 and K=7, which covers the most GSM code uses. The decoding algorithm exploits the symmetric structure of the Viterbi add-compare-select (ACS) operation - commonly known as the ACS butterfly. This shift-register optimization can be found in the well-known text by Dave Forney. Forney, G.D., "The Viterbi Algorithm," Proc. of the IEEE, March 1973. Implementation is non-architecture specific and improves performance on x86 as well as ARM processors. Existing API is unchanged with optimized code being called internally for supported codes. The original code was relicensed under GPLv2-or-later with permission of copyright holder - Tom Tsou. Change-Id: I74d355274b4176a7d924f91ef3c96912ce338fb2
This repository contains a set of C-language libraries that form the core infrastructure of many Osmocom Open Source Mobile Communications projects.
Historically, a lot of this code was developed as part of the OpenBSC project, but which are of a more generic nature and thus useful to (at least) other programs that we develop in the sphere of Free Software / Open Source mobile communications.
There is no clear scope of it. We simply move all shared code between the various Osmocom projects in this library to avoid code duplication.
The libosmcoore.git repository build multiple libraries:
The official homepage of the project is https://osmocom.org/projects/libosmocore/wiki/Libosmocore
You can clone from the official libosmocore.git repository using
git clone git://git.osmocom.org/libosmocore.git
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