Method, apparatus, and article of manufacture for error detection and channel management in a communication system
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United States of America Patent
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May 4, 2004
Grant Date -
Nov 21, 2002
app pub date -
Mar 27, 2001
filing date -
Mar 27, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
A weighting device utilizes soft reliability values and class weighting factors to detect errors in digitized information. The soft reliability values can be provided by a decoder that processes the information according to a predetermined coding scheme. Bits representing the encoded information are classified accorded to classes defined by a bit sensitivity analysis. The bit sensitivity analysis can be based on subjective and/or objective criteria. As incoming bits are received by the weighting device, they are classified and class reliability values are computed for each class based on the soft reliability values. The class reliability values are then weighted to produce weighted class reliability values. Error concealment algorithms, coding rate determination, and coding rate requests can be activated based on the weighted class reliability values.
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