Pulse or digital communications – Pulse code modulation
Reexamination Certificate
2006-02-21
2006-02-21
Bayard, Emmanuel (Department: 2634)
Pulse or digital communications
Pulse code modulation
C375S341000, C714S792000, C714S794000
Reexamination Certificate
active
07003041
ABSTRACT:
A method and apparatus for decoding turbo codes using a sliding window method is disclosed. In decoding a received sequence using a Maximum A Posteriori (MAP) algorithm, a learning by a backward processing is performed for a predetermined length and first resultant values of an L-symbol length sequence and second resultant values of a W-symbol length sequence calculated by a backward processing are stored. Third resultant values are calculated by a forward processing. The calculation of the third resultant values overlaps in time with the next learning. A decoding symbol output is determined using the third resultant values and the second resultant values of the previous window.
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Bayard Emmanuel
Fleshner & Kim LLP
LG Electronics Inc.
Williams Lawrence B.
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