Design methods for irregular repeat-accumulate codes

We optimize the random-like ensemble of irregular repeat-accumulate (IRA) codes for binary-input symmetric channels in the large block-length limit. Our optimization technique is based on approximating the evolution of the densities (DE) of the messages exchanged by the belief-propagation (BP) messa...

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Veröffentlicht in:	IEEE transactions on information theory 2004-08, Vol.50 (8), p.1711-1727
Hauptverfasser:	Roumy, A., Guemghar, S., Caire, G., Verdu, S.
Format:	Artikel
Sprache:	eng
Schlagworte:	Additive white noise Applied sciences Approximation methods Channel capacity Codes Coding, codes Design methodology Exact sciences and technology Information, signal and communications theory Intersymbol interference Iterative decoding Linear programming Optimization techniques Parity check codes Signal and communications theory Stability Systems design Systems stability Telecommunications and information theory Turbo codes
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