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April 13th, 2012: Release 1.3.0 of the OpenFEC library

New major release

  • changed the LDPC-Staircase codec license for CECILL (i.e. the content of the src/lib_stable/ldpc-staircase/ directory only). There is no change for the rest of the library that remains under a CECILL-C license.
  • solved a bug in the LDPC-Staircase matrix creation algorithm when N1 is even. This bug makes the codec non RFC5170 compliant (!). However there was no impact with odd N1 values. This means that with an even N1, an application using version >= 1.3 will not interoperate with an application using version <= 1.2.

March 3rd, 2011: Release 1.2.2 of the OpenFEC library

New minor release

  • added some statistics about built/rebuilt/ignored symbols in IT and ML decoding.
  • solved a bug in eperftool to use the "LDPC from file" codec
  • eperftool : now, you can test codecs with callbacks for source and repair symbols creation.
  • various bug corrections

      • Enjoy - the openfec team

Dec 3rd, 2010: Release of the OpenFEC v1.2.1

New minor release:

We published this minor release just to solve a serious bug in of_rs_set_available_symbols() & of_rs_2_m_set_available_symbols() functions (thanks Rakis).
Now, you can use of_set_available_symbols() function with Reed-Solomon codecs even if you have erased symbols.

Enjoy - The OpenFEC team.

Dec 3rd, 2010: Releaseof the OpenFEC v1.2.0

New major release:

  • we added a new optimized Reed-Solomon codec over 2^m (with m=4,8).
    Using m=4 is interesting for very small blocks (since k<n<=15), and is slightly faster than using m=8 in that case.
  • Reed-Solomon over 2^m have both beem highly optimized and are approximatively 25 % faster than the original Reed-Solomon over GF(2^8) of previous release.
  • Reed-Solomon over GF(2^8) still exists and has been optimized. It is 20 % faster than that previous release.

Sept 16th, 2010 : release of OpenFEC v1.1.0

Release 1.1.0 of the OpenFEC library is a major release.
The difference W.R.T. version 1.0.0beta lies in the factorization of the binary
linear system decoding code (for iterative and maximum likelihood decoding).
All the binary LDPC (including 2D parity codes) codes now rely on this decoding
library.

See changelog for details.

Enjoy - The OpenFEC team.

July 2nd, 2010: release of OpenFEC v1.0.0 beta

July 2nd, 2010: release of OpenFEC v1.0.0 beta

This is the first release of the OpenFEC library. It contains the following codecs :

  • LDPC-Staircase codec
  • Reed-Solomon GF(256) codec
  • 2D parity codec
  • LDPC from file codec

It also contains an advanced simulation environment to let you perform easily many different kinds of tests.

You can freely download this release at http://openfec.org/.
Enjoy - the OpenFEC team.