Meeting and Seminar
21, Thursday, 2010
on "Status of knowledge on non-binary LDPC decoders"
with IEEE Solid State Circuits Society
Prof. David Declercq (ENSEA in Cergy-Pontoise)
AbstractIn this tutorial, the iterative decoding techniques for non-binary LDPC
codes will be presented, both from the theoretical aspects of Belief
Propagation and its analysis, and from more practical aspects of efficient
implementation. In a first part, the main difference between iterative BP
decoding of binary and non-binary LDPC codes will be highlighted. Then, in
a second part, the solutions proposed in the literature to reduce the
complexity of non-binary decoders, both for memory storage and
computational burden reduction, will be presented.
Some directions of research and development about non-binary decoders will
be discussed. Finally, the outstanding advantages of generalized non-binary
decoders on clustered graphical models of several error correcting codes
will be presented.
was born in June 1971. He graduated his PhD in Statistical Signal
Processing 1998. He worked on a new Gaussianity
test based on Hermite polynomials properties, and
the characterization and the blind identification of non-linear time
series. After his PhD, he oriented his researchs
towards digital communications, and especially coding theory and iterative
decoder design. He started to work on LDPC codes in 1999, both from the
code and decoder design aspects.
Since 2003, he
made a major effort in studying and developping
LDPC codes and decoders in high order Galois fields GF(q),
with q>>2. A large part of his research projects are related to non
binary LDPC codes. He mainly investigated two directions: (i) the design of GF(q) LDPC
codes for short and moderate lengths, and (ii) the simplification of the
iterative decoders for GF(q) LDPC codes with complexity/performance
David Declercq published more than 20 papers in major
journals (IEEE-Trans. Commun., IEEE-Trans. Inf.
Theo., Commun. Letters,
EURASIP JWCN), and more than 70 papers in major conferences in ICT. He is
currently full professor at the ENSEA in Cergy-Pontoise,
France, a graduate school in Electrical Engineering. He is a member of the
ETIS laboratory, general secretary of the National GRETSI association, and
member of the GdR-ISIS direction team. He is
currently the recipient of junior position at the "Institut
Universitaire de France".
Back to main page