Phase detector for timing recovery loop

Details Phase detector for timing recovery loop Phase detector for timing recovery loop

2011-07-05

2011-07-05

Torres, Juan A (Department: 2611)

Pulse or digital communications

Receivers

Particular pulse demodulator or detector

C375S262000, C375S373000, C375S371000, C375S375000, C714S786000, C714S794000, C714S795000

Reexamination Certificate

active

07974369

ABSTRACT:
In one embodiment, a (hard-drive) read channel has a phase detector used in a timing recovery loop. The phase detector utilizes the sign bit and confidence value from a received log-likelihood ratio (LLR) signal to generate a mean value. The mean value is convolved with a partial response target to generate an estimated timing error signal. When implemented in a hard-drive read channel, the phase detector allows for timing recovery with lower loss-of-lock rates.

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