Séminaire ICI : Ingmar Land
Titre du séminaire et orateur
Design of IRA codes for limited number of iterations, Ingmar Land, ITR, University of South Australia
Date et lieu
Mercredi 7 mars 2012, 14h.
ENSEA, salle 384.
Traditional code design aims at constructing codes for an infinite number of decoder iterations. In many applications, however, complexity or latency is limited and therefore decoding with a finite number of iterations is important. In this presentation we address such design for non-systematic irregular repeat-accumulate (IRA) codes. To formulate the optimisation problem, we introduce additional optimisation variables and constraints that "unroll" the iteration. We restrict attention to the binary erasure channel (BEC), for which the employed extrinsic information transfer (EXIT) approach is exact. Extension to other sparse-graph codes and other communication channels is straightforward.
Ingmar Land is Senior Research Fellow at the Institute for Telecommunications Research (ITR), University of South Australia, Adelaide. Before having joined ITR in 2007, he was Assistant Professor for Communication Theory at Aalborg University, Denmark. He received his Dr-Ing in 2004 from the University of Kiel, Germany, and he studied for his Dipl.-Ing. at the University of Ulm, Germany, and at the University of Erlangen-Nürnberg, Germany. His interests are information and coding theory with application to cooperative communications, multiuser communication, distributive source coding, physical-layer security, and red-back sizzling.