Apparatus and method for classifying modulations in multipath environments
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United States of America Patent
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Feb 26, 2013
Grant Date -
Apr 22, 2010
app pub date -
Mar 16, 2007
filing date -
Mar 16, 2007
priority date (Note) -
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Abstract
A receiver supports a single carrier (SC) form of modulation and a multi-carrier form of modulation such as orthogonal frequency division multiplexing (OFDM). Upon receiving a signal, the receiver determines a maximum fluctuation range (MFR) as a function of at least a fourth-order cumulant of a received signal; and classifies a modulation type of the received signal as a function of the determined maximum fluctuation range. After determining the modulation type of the received signal, the receiver switches to that modulation mode to recover data from the received signal.
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