Title :
Exposing pseudoweight layers in regular LDPC code ensembles
Author :
Flanagan, Mark F.
Author_Institution :
Univ. Coll. Dublin, Dublin, Ireland
Abstract :
A solution is presented for the asymptotic growth rate of the AWGN-pseudoweight distribution of regular low-density parity-check (LDPC) code ensembles for a selected graph cover degree M ¿1. The evaluation of the growth rate requires solution of a system of 2M +1 nonlinear equations in 2M +1 unknowns. Simulation results for the pseudoweight distribution of two regular LDPC code ensembles are presented for graph covers of low degree.
Keywords :
graph theory; maximum likelihood decoding; nonlinear equations; parity check codes; AWGN-pseudoweight distribution; maximum likelihood decoding; nonlinear equations; pseudoweight layers; regular low-density parity-check code ensembles; selected graph cover degree; Conferences; Error correction codes; Fading; Forward error correction; Information theory; Interference; OFDM; Parity check codes; Wireless LAN; Working environment noise;
Conference_Titel :
Information Theory Workshop, 2009. ITW 2009. IEEE
Conference_Location :
Taormina
Print_ISBN :
978-1-4244-4982-8
Electronic_ISBN :
978-1-4244-4983-5
DOI :
10.1109/ITW.2009.5351212
