Linear filter equalizer

An apparatus ( 100 ) and a method ( 400 ) suitable for use in a communication device by equalizing an input signal received to mitigate multipath distortion effects present in the input signal in the communication device are provided. A first filter ( 102 ) samples the input signal ( 104 ) and gener...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: MICHAEL J CARNEY, CHRIS T QUANBECK, CHRISTOPHER P LAROSA
Format: Patent
Sprache:eng
Schlagworte:
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Beschreibung
Zusammenfassung:An apparatus ( 100 ) and a method ( 400 ) suitable for use in a communication device by equalizing an input signal received to mitigate multipath distortion effects present in the input signal in the communication device are provided. A first filter ( 102 ) samples the input signal ( 104 ) and generates a first filter output ( 106 ) based upon the sampled input signal and a filter coefficient array ( 108 ). An error signal ( 112 ) is then generated based upon a difference between the first filter output ( 106 ) and a desired signal ( 114 ), and the filter coefficient array ( 108 ) is updated based upon a product of the error signal ( 112 ) and an adaptation constant ( 118 ). A second filter ( 126 ) samples a delayed input signal ( 124 ) and generates a second filter output ( 128 ) based upon the sampled delayed input signal and the filter coefficient array ( 108 ).