PRML system with a branch estimator

Details PRML system with a branch estimator PRML system with a branch estimator

2007-02-13

2007-02-13

Lamarre, Guy J. (Department: 2133)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital data error correction

C714S791000, C714S792000, C714S794000, C714S795000, C375S262000, C375S265000, C375S341000

Reexamination Certificate

active

10387532

ABSTRACT:
A PRML system with a branch estimator. The PRML system includes an analog-to-digital converter (ADC) for receiving an analog input signal and converting the analog input signal into a digital sampled signal according a sampling clock; a branch estimator for receiving the digital sampled signal and estimating each branch eigenvalue; and a Viterbi decoder for decoding an output signal according to the digital sampled signal and the branch eigenvalues. Since the PRML system employs the branch estimator to estimate the branch eigenvalues of trellis of the Viterbi decoder directly, the PRML system can be simplified and the execution speed of the PRML system can be increased.

REFERENCES:
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patent: 6216249 (2001-04-01), Bliss et al.
Jaekyun Moon et al.‘Pattern-dependent noise prediction in signal-dependent noise,’ IEEE Journal on Selected Areas in Communications, Publication Date: Apr. 2001, vol. 19, Issue: 4, On pp. 730-743.

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