Signal decoding method and apparatus
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United States of America Patent
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Jul 10, 2007
Issued Date -
N/A
app pub date -
Apr 25, 2005
filing date -
Apr 26, 2004
priority date (Note) -
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Abstract
An apparatus and method for use by a receiver in decoding information sent by phase-shift keying over a carrier frequency is disclosed. The method is well suited for use with power line carrier (PLC) applications as it is adapted to appropriately position the sampling window based on a zero crossing of one of the phases of the power line. The method allows for receipt and processing of information on more than one carrier frequency and from transmitters operating on a phase of the power line that is different than the phase used by the receiver to detect the zero crossings of the alternating current at the power grid frequency on the power line. A number of alternative embodiments are included.
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