Viterbi detector for class II partial response equalized miller-squared signals
US5916315A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 10, 1997 |
| Grant date | Jun 29, 1999 |
| Priority date | — |
| Expiry date | Jan 10, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/1426
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A novel circuit arrangement decodes Miller-squared (M.sup.2) encoded signals using Class II partial response (PR2) equalization techniques. The circuit arrangement utilizes a maximum-likelihood sequence estimator (detector) implemented by the Viterbi algorithm to minimize the probability of bit errors in a digital storage or transmission channel that employs M.sup.2 encoding in combination with PR2 equalization. The PR2 equalization channel is preferably modeled by a finite impulse response (FIR) filter which, in turn, is modeled by a finite-state trellis diagram. This allows creation of a modified trellis when M.sup.2 encoding is applied to the PR2 channel with the modified trellis providing the basis for implementing the detector according to the invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.