Decoding extended error correcting codes using soft information

Details Decoding extended error correcting codes using soft information Decoding extended error correcting codes using soft information

2005-08-16

2005-08-16

Chase, Shelly A (Department: 2133)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital data error correction

C714S800000

Reexamination Certificate

active

06931583

ABSTRACT:
In one embodiment, the present invention can be used to correct one more error in an extended codeword encoded with a block code and a single parity check code than the block code is able to correct. In one embodiment, a communications device includes a decoder that has a soft decoder to receive an extended codeword and a strength of each bit of the extended codeword, and to produce a codeword by soft decoding the extended codeword using the received strengths, and a block decoder coupled to the soft decoder to produce a corrected codeword by block decoding the codeword using an error correcting block code.

REFERENCES:
patent: 4763331 (1988-08-01), Matsumoto
patent: 5461629 (1995-10-01), Sutterlin et al.
patent: 5828676 (1998-10-01), Hurlbut et al.
patent: 6526538 (2003-02-01), Hewitt

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