Title :
Optimal channel detection for nonbinary coded partial response channels
Author :
Chang, Wu ; Cruz, J.R.
Author_Institution :
Sch. of Electr. & Comput. Eng., Univ. of Oklahoma, Norman, OK, USA
fDate :
7/1/2009 12:00:00 AM
Abstract :
We derive a recursive algorithm to compute the joint maximum a posteriori probabilities of p consecutive bits on partial response channels. This channel detector is optimal for nonbinary soft-iterative decoding with multiple channel iterations. It is validated on a nonbinary low-density parity-check coded perpendicular magnetic recording channel.
Keywords :
channel coding; iterative decoding; maximum likelihood estimation; parity check codes; partial response channels; recursive estimation; channel detector; joint maximum a posteriori probabilities; magnetic recording channel; multiple channel iterations; nonbinary code; nonbinary low-density parity-check code; nonbinary soft-iterative decoding; optimal channel detection; partial response channels; recursive algorithm; Concatenated codes; Detection algorithms; Detectors; Helium; Iterative decoding; Magnetic recording; Parity check codes; Partial response channels; Perpendicular magnetic recording; Reed-Solomon codes; Channel detection, partial response channels, symbol-based BCJR, magnetic recording, turbo equalization;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOMM.2009.07.060615
