Title :
Adaptive combined Chase-GMD algorithms for block codes
Author :
Mahran, A. ; Benaissa, M.
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. of Sheffield, UK
fDate :
4/1/2004 12:00:00 AM
Abstract :
This work proposes a new adaptive approach to the soft decision decoding of the so-called combined Chase-GMD class of algorithms (CGA). A reliability threshold is used to match the decoding performance to the channel conditions. As a result, a significant reduction in decoding complexity can be achieved by reducing the number of required algebraic decodings. The proposed adaptive application can achieve the upper performance limit of the CGA with significant complexity reduction.
Keywords :
adaptive decoding; algebraic codes; block codes; channel coding; error correction codes; adaptive combined chase-GMD algorithm; adaptive decoding; algebraic decoding; block code; channel coding; channel condition; decoding complexity reduction; decoding performance; error-correcting code; generalised minimum distance; reliability threshold; soft decision decoding; Additive white noise; Binary phase shift keying; Block codes; Channel coding; Demodulation; Error correction codes; Gaussian channels; Gaussian noise; Maximum likelihood decoding; Phase shift keying;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2004.827979
