High rate product code decoding for partial response channel

Details High rate product code decoding for partial response channel High rate product code decoding for partial response channel

2006-03-14

2006-03-14

Tse, Young T. (Department: 2637)

Pulse or digital communications

Receivers

Particular pulse demodulator or detector

C375S341000, C714S804000

Reexamination Certificate

active

07012974

ABSTRACT:
The present invention is directed to a detector for a high-density magnetic recording channel and other partial response channels. The present invention presents a method for decoding a high rate product code and a decoder which uses this method, comprising receiving a high rate product code; using a row detector to find a most likely codeword and a most likely error sequence for each row; and using a column processor to correct any remaining errors based on column parity bits and the most likely error sequence of each row. In a first aspect of the present invention, the row detector is implemented through a 2-VA detector. In a second aspect of the present invention, the row detector is implemented through a conventional VA detector and a hank of matched filters.

REFERENCES:
patent: 6185175 (2001-02-01), Zook
patent: 6320916 (2001-11-01), Kobayashi et al.
patent: 6434719 (2002-08-01), Livingston

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