Parallel maximum a posteriori detectors that generate soft...

Details Parallel maximum a posteriori detectors that generate soft... Parallel maximum a posteriori detectors that generate soft...

2005-01-28

2009-06-30

Tse, Young T. (Department: 2611)

Pulse or digital communications

Receivers

Particular pulse demodulator or detector

C714S795000

Reexamination Certificate

active

07555070

ABSTRACT:
A soft decision value output detector includes a plurality of maximum a posteriori (MAP) detectors. The MAP detectors are connected in parallel, and configured to simultaneously generate state metrics for portions of a sampled data sequence, and to generate soft decision values based on the generated state metrics. The MAP detectors may generate soft decision values in a fixed latency manner and without buffering the sampled data sequence for a whole sector of a disk in a disk drive. The MAP detectors may generate soft decision values for portions of the sampled data sequence at least at a rate at which the portions of the sampled data sequence are input to the MAP detectors.

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patent: 2005/0149836 (2005-07-01), Tanaka
Boutillon et al;VLSI Architectures for the MAP Algorith, IEEE Transactions on Communications, vol. 51, No. 2; Feb. 2003, pp. 175-185.
Worm et al.;VLSI Architectures for High-Speed MAP Decoders, IEEE, 2003, pp. 446-453.

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