Method and apparatus for modulation differentiation
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United States of America Patent
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Jun 15, 1999
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app pub date -
Jun 26, 1998
filing date -
Jun 4, 1997
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Abstract
To differentiate between different types of modulation, a fast RSSI detector performs a RSSI measurement on a received signal. The output of the RSSI detector is sampled over a sampling window and generates sampled values. A processor calculates absolute values of piecewise first derivatives of the sampled values and sums the result to create a summation constant. A modulation detector determines the type of modulation based on the value of the summation constant and an RSSI compensation calculates a compensation factor to correct the RSSI measurement.
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