Adaptive reference pattern for spread spectrum detection claims
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United States of America Patent
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Aug 10, 1999
Issued Date -
N/A
app pub date -
Feb 2, 1998
filing date -
Dec 29, 1995
priority date (Note) -
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Abstract
A receiver for detecting spread spectrum binary data particularly on a power line in the presence of channel distortion. In one embodiment a standard pattern ideally suited for minimal distortion in the channel is used in conjunction with an alternate pattern which is developed to better detect carrier and data in the presence of certain channel distortion. The receiver switches between the standard and alternate pattern to provide improved detection. In another embodiment an adaptive pattern is used which is developed from the receive signal. For instance, the signal over several bit times is averaged to provide a pattern which is correlated with a receive signal.
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