Error detection/correction and fault detection/recovery – Pulse or data error handling – Digital data error correction
Reexamination Certificate
2007-07-31
2007-07-31
Dildine, R. Stephen (Department: 2133)
Error detection/correction and fault detection/recovery
Pulse or data error handling
Digital data error correction
C714S780000
Reexamination Certificate
active
10915134
ABSTRACT:
A method and apparatus for decoding turbo encoded data. A first turbo decoding iteration is performed to produce a most likely sequence of symbols, each symbol having an amplitude value and a positive or negative sign. The sequence of symbols is error checked, and if an error is detected, the apparatus forms a next most likely sequence by reversing the positive or negative sign of the symbol having the smallest amplitude. If an error is again detected, additional sign reversals are performed on symbols with larger amplitudes, and on multiple symbols. Each modification is error checked. If none of the modifications produce an error-free sequence, and a maximum number of modifications are performed, the apparatus performs another turbo decoding iteration to produce another sequence of symbols. The process is then repeated until an error-free sequence is produced or a maximum number of iterations are performed.
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Bottomley Gregory E.
Cheng Jung-Fu
Ramesh Rajaram
Dildine R. Stephen
Telefonaktiebolaget LM Ericsson (publ)
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