Method and apparatus for generating a 64 state 4-D Trellis code in DMT
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United States of America Patent
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Mar 18, 2008
Grant Date -
Feb 26, 2004
app pub date -
Aug 20, 2003
filing date -
Aug 20, 2002
priority date (Note) -
Expired
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Abstract
A method and apparatus for encoding data bits in a DMT modulation system is provided utilizing a 64-state Trellis encoder to achieve further improvement in the achievable coding gain by employing coset partitioning, bit conversion, and constellation encoding that fit the DMT modulation. The coding gain of the new coder is around 5.63 dB, which is about 0.96 dB higher than the current Trellis coder in the DMT standard.
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