Title :
On iterative decoding in some existing systems
Author :
Bajcsy, Jan ; Chong, Chan-Vee ; Garr, D.A. ; Hunziker, J. ; Kobayashi, Hisashi
Author_Institution :
Dept. of Electr. & Comput. Eng., McGill Univ., Montreal, Que., Canada
fDate :
5/1/2001 12:00:00 AM
Abstract :
Iterative decoding is used to achieve backward compatible performance improvement in several existing systems. Concatenated coding and iterative decoding are first set up using composite mappings, so that various applications in digital communication and recording can be described in a concise and uniform manner. An ambiguity zone detection (AZD) based iterative decoder, operating on generalized erasures, is described as an alternative for concatenated systems where turbo decoding cannot be performed. The described iterative decoding techniques are then applied to selected wireless communication and digital recording systems. Simulation results and utilization of decoding gains are discussed
Keywords :
cellular radio; channel coding; concatenated codes; digital magnetic recording; digital radio; iterative decoding; optical storage; signal detection; turbo codes; GSM system; ambiguity zone detection; backward compatible performance; channel coding; composite mappings; concatenated coding; decoding gain; digital communication; digital recording; generalized erasures; iterative decoding; magnetic recording; optical recording systems; simulation results; wireless communication systems; Channel capacity; Channel coding; Chemical technology; Concatenated codes; Digital communication; Digital recording; Iterative decoding; Parity check codes; Reliability theory; Wireless communication;
Journal_Title :
Selected Areas in Communications, IEEE Journal on
