Bin-to-bin differential encoding apparatus and method for a discrete multi-tone transmission system
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United States of America Patent
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Jan 16, 2001
Grant Date -
N/A
app pub date -
Apr 7, 1999
filing date -
Apr 7, 1999
priority date (Note) -
Expired
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Abstract
A discrete multi-tone communication system employing bin-to-bin differential encoding of data frames to be transmitted within the communication system. The bin-to-bin differential encoding utilizes the phase angle of previously encoded data to encode the current data relative to that phase angle. Hence, only a single reference tone is required to encode a first portion of the data frame into a discrete tone, and then the remaining data portions of the data frame are each subsequently encoded into discrete tones with reference to the phase angle of data already encoded into a discrete tone. Thus, to achieve decoding, a decoding device only requires the reference tone to begin decoding the discrete tones to the correct phase angle for an accurate reproduction of the original data frame.
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