Combined optimization scheme for degree distributions of LDPC codes

Jin Soo Park, Min Kyu Song, Hong Yeop Song

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, we propose an optimization scheme for degree distributions of LDPC codes that combines differential evolution and iterative simplex algorithm. In the proposed scheme, we find good check and variable nodes degree distribution and threshold by using differential evolution, and then, we further optimize check and variable nodes degree distribution that has enhanced code rate by using an iterative simplex algorithm. An iterative simplex algorithm consists of two simplex algorithms, optimizing ρ(x) and λ(x), respectively and iteratively. Some simulation results show that the proposed scheme finds degree distributions, better than those obtained by the differential evolution only, in terms of threshold and/or code rate. As an application of the proposed scheme, we report some new degree distributions with some new maximum degrees.

Original languageEnglish
Title of host publication2013 19th Asia-Pacific Conference on Communications, APCC 2013
PublisherIEEE Computer Society
Pages485-489
Number of pages5
ISBN (Print)9781467360500
DOIs
Publication statusPublished - 2013 Jan 1
Event2013 19th Asia-Pacific Conference on Communications, APCC 2013 - Denpasar, Indonesia
Duration: 2013 Aug 292013 Aug 31

Publication series

Name2013 19th Asia-Pacific Conference on Communications, APCC 2013

Other

Other2013 19th Asia-Pacific Conference on Communications, APCC 2013
CountryIndonesia
CityDenpasar
Period13/8/2913/8/31

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications

Cite this

Park, J. S., Song, M. K., & Song, H. Y. (2013). Combined optimization scheme for degree distributions of LDPC codes. In 2013 19th Asia-Pacific Conference on Communications, APCC 2013 (pp. 485-489). [6765996] (2013 19th Asia-Pacific Conference on Communications, APCC 2013). IEEE Computer Society. https://doi.org/10.1109/APCC.2013.6765996