Method and apparatus of low power energy detection for a WLAN
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United States of America Patent
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Jul 6, 2004
Grant Date -
N/A
app pub date -
Apr 9, 2002
filing date -
Apr 9, 2002
priority date (Note) -
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Abstract
A method and implementation disclosed for detecting interference. A state machine controller is provided for establishing an interference detection cycle including a power sample period and a periodic sampling interval. A receiver component, responsive to the state machine controller, performs an energy measurement at a predetermined wireless band during the power sample period. A threshold comparator determines whether the energy measurement exceeds a predetermined threshold. A processing implementation processes the energy measurement to determine whether it corresponds to interference on the predetermined wireless band, if the measurement exceeds the predetermined threshold. A deactivating implementation is used to instruct the state machine controller to await the next power sample period, if the energy measurement does not exceed the predetermined threshold.
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