Encoding information into constant weight words

Iryna Andriyanova and Jean-Pierre Tillich and Jean-Claude Carlach

France-Telecom R&D (Rennes) and INRIA (projet CODES)


To be presented at ISIT 2005, Adelaide, Australie.


We investigate a new class of codes which is in some senses a hybrid between LDPC codes and turbo-codes.
We show that when the parameters of this class are well chosen they display very good iterative decoding
performances and have at the same time a minimum distance which is typically linear in the code length.