Apparatus and method for decoding Reed-Solomon code
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United States of America Patent
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Issued Date -
Apr 20, 2006
app pub date -
Sep 30, 2005
filing date -
Oct 1, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An apparatus for receiving and decoding a double-coded symbol in a communication system using a double coding scheme for encoding a Reed-Solomon (RS)-coded symbol with a predetermined scheme for communication. In the apparatus, an inner decoder receives a frame formed with the double-coded symbols, and primary-decodes the received frame. An RS decoding buffer stores an output of the inner decoder frame by frame, and an RS decoder reads symbols in the same column from symbols of a frame stored in the RS decoding buffer, performs RS decoding on the read symbols, and generates an RS decodable indicator value for each symbol. A log likelihood ratio (LLR) update unit updates an LLR value using the RS decodable indicator value, and outputs the updated LLR value to the inner decoder.
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