Generalized low-density codes with BCH constituents for full-diversity near-outage performance
Language
en
Communication dans un congrès
This item was published in
IEEE International Symposium on Information Theory 2008, ISIT 2008, IEEE International Symposium on Information Theory 2008, ISIT 2008, IEEE International Symposium on Information Theory 2008, ISIT 2008, 2008-07, Toronto. 2008-07p. 787-791
English Abstract
A new graph-based construction of generalized low density codes (GLD-Tanner) with binary BCH constituents is described. The proposed family of GLD codes is optimal on block erasure channels and quasi-optimal on block fading ...Read more >
A new graph-based construction of generalized low density codes (GLD-Tanner) with binary BCH constituents is described. The proposed family of GLD codes is optimal on block erasure channels and quasi-optimal on block fading channels. Optimality is considered in the outage probability sense. A classical GLD code for ergodic channels (e.g., the AWGN channel, the i.i.d. Rayleigh fading channel, and the i.i.d. binary erasure channel) is built by connecting bitnodes and subcode nodes via a unique random edge permutation. In the proposed construction of full-diversity GLD codes (referred to as root GLD), bitnodes are divided into 4 classes, subcodes are divided into 2 classes, and finally both sides of the Tanner graph are linked via 4 random edge permutations. The study focuses on non-ergodic channels with two states and can be easily extended to channels with 3 states or more.Read less <
Origin
Hal imported