Method and apparatus for selectively applying interference cancellation in spread spectrum systems
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United States of America Patent
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Jul 10, 2012
Grant Date -
Dec 23, 2010
app pub date -
Aug 30, 2010
filing date -
Sep 23, 2002
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The present invention is directed to the selective provision of interference canceled signal streams to demodulating fingers in a communication receiver. According to the present invention, potential interferer signal paths are identified. Signal streams having one or more potential interferer signals removed or canceled are created, and a correlation is performed to determine whether the strength of a desired signal path increased as a result. If the correlation indicates that the strength of a desired signal path was increased by the signal cancellation, the interference canceled signal stream is provided to the demodulation finger assigned to track the desired signal path. If the correlation determines that the strength of the desired signal path did not increase as a result of performing interference cancellation, the raw or a different interference canceled signal stream is provided to the demodulation finger.
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