Joint data and channel estimation using fast blind trellis search
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United States of America Patent
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Nov 16, 1993
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N/A
app pub date -
Jun 22, 1990
filing date -
Jun 22, 1990
priority date (Note) -
Expired
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Abstract
A blind equalization technique for a data communications channel, i.e., one that does not require the explicit use of a training sequence to learn the channel. Instead, for every possible sequence that can be transmitted, it finds the best possible channel fit corresponding to the noisy channel output sequence (typically using the least squares procedure). Finally, the data and the channel are estimated to be those with the overall best fit. This simple but exhaustive search procedure can advantageously use a sub-optimal trellis search algorithm to achieve in present performance with only linear complexity.
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