Non-redundant equalization
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United States of America Patent
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Oct 7, 2014
Grant Date -
Jun 13, 2013
app pub date -
Dec 9, 2011
filing date -
Dec 9, 2011
priority date (Note) -
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Abstract
Communication signal processing entails generating an overall signal correlation estimate that reflects overall impairment present in a received signal before despreading. Processing further includes parametrically constructing one or more component-specific correction terms as a function of one or more component signal correlation estimates, each estimate reflecting a particular component of the overall impairment. Combining weights are derived, as a function of this overall estimate and the correction term(s), so that they exclude the contribution of the impairment component(s) to the overall impairment. These weights are used to combine signal samples in an equalization process. As the combining weights exclude the contribution of the impairment component(s) to the overall impairment, the equalization process utilizing the weights exclusively suppresses impairment that is not attributable to the component(s). This advantageously avoids redundant suppression of the impairment component(s), since processing further includes despreading the received signal in a despreading process that suppresses the component(s).
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