Title :
High-Rate Modulation Codes for Reverse Concatenation
Author :
Blaum, Mario ; Cideciyan, Roy D. ; Eleftheriou, Evangelos ; Galbraith, Rick ; Lakovic, Ksenija ; Mittelholzer, Thomas ; Oenning, Travis ; Wilson, Bruce
Author_Institution :
Hitachi Global Storage Technol., San Jose, CA
Abstract :
We present a reverse concatenation (RC) architecture using Reed-Solomon (RS) error-correction codes (ECCs). The scheme employs very-high-rate pre-RS modulation codes followed by RS parity symbol insertion. The very-high-rate modulation codes in the RC scheme, which facilitate timing recovery and automatic gain control and reduce the detector path memory, are of the same type as the modulation codes that have been used in generalized partial-response maximum-likelihood (PRML) detection systems
Keywords :
Reed-Solomon codes; concatenated codes; error correction codes; magnetic recording; maximum likelihood detection; modulation coding; Reed-Solomon codes; automatic gain control; detector path memory; error-correction codes; high-rate modulation codes; magnetic recording; partial-response maximum-likelihood detection systems; reverse concatenation; very-high-rate modulation codes; Degradation; Detectors; Error correction codes; Gain control; Magnetic modulators; Maximum likelihood decoding; Maximum likelihood detection; Modulation coding; Timing; USA Councils; Fibonacci codes; magnetic recording; modulation codes; partial-response channel; reverse concatenation (RC);
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2006.888374
