Coding apparatus, coding method and recording medium having coded program recorded therein, and decoding apparatus, decoding method and recording medium having decoded program recorded therein
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United States of America Patent
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-
Mar 7, 2006
Grant Date -
Nov 29, 2001
app pub date -
Mar 23, 2001
filing date -
Mar 24, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Error correction coding and decoding according to a serial concatenated modulation system are carried out under high code rate. A coding apparatus 1 comprises three convolutional coders 10, 30 and 50 for carrying out convolutional operation; two interleavers 20 and 40 for rearranging order of data input; and a multi-value mapping circuit 60 for carrying out mapping of a single point on the basis of a predetermined modulation system. The coding apparatus 1 carries out convolutional operation whose code rate is '⅔' as coding of extrinsic codes by a convolutional coder 10, and carries out convolutional operation whose code rate is '1' as coding of inner codes by a convolutional coder 50, and a multi-value modulation mapping circuit 60 applies mapping to a transmission symbol of a 8 PSK modulation system to output it as a single code transmission symbol.
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