Title :
A greedy search for improved QC LDPC codes with good girth profile and degree distribution
Author :
Bocharova, Irina E. ; Hug, Florian ; Johannesson, Rolf ; Kudryashov, Boris D.
Author_Institution :
Dept. of Inf. Syst., St. Petersburg Univ. of Inf. Technol., Mech. & Opt., St. Petersburg, Russia
Abstract :
The girth profile is introduced and search algorithms for regular and irregular quasi-cyclic LDPC block codes with both good girth profile and good degree distribution are presented. New QC LDPC block codes of various code rates are obtained and their bit error rate performance is compared with that of the corresponding LDPC block codes defined in the IEEE 802.16 WiMAX standard of the same block length and code rate.
Keywords :
WiMax; block codes; error statistics; greedy algorithms; parity check codes; IEEE 802.16; WiMAX standard; bit error rate; girth profile; greedy search; quasicyclic LDPC code; search algorithms; Bit error rate; Block codes; Convolutional codes; IEEE 802.16 Standards; Parity check codes; Signal to noise ratio; Vectors;
Conference_Titel :
Information Theory Proceedings (ISIT), 2012 IEEE International Symposium on
Conference_Location :
Cambridge, MA
Print_ISBN :
978-1-4673-2580-6
Electronic_ISBN :
2157-8095
DOI :
10.1109/ISIT.2012.6284129
