Fractionally spaced cross-polarization interference canceller

H - Electricity – 04 – B

Patent

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H04B 1/10 (2006.01) H04B 7/00 (2006.01)

Patent

CA 2073082

A fractionally spaced cross-polarization interference canceller, wherein a compensation signal is generated through an adaptive filter operating in a frequency that is an integer multiple of a transmission data frequency. The cross-polarization interference canceller includes a mechanism for generating an error signal used to control coefficients of the adaptive filter in the integer multiple frequency. The mechanism is realized, for example, by using a waveform generator generating an estimate of a baseband signal in the integer multiple frequency using a plurality of estimates of transmission data and coefficients determined by an impulse response of a transmission path.

L'invention est un éliminateur de signaux brouilleurs à polarisation orthogonale légèrement espacés qui engendre un signal de correction au moyen d'un filtre adaptatif fonctionnant à une fréquence qui est un multiple entier de la fréquence de transmission des données. L'éliminateur de signaux brouilleurs à polarisation orthogonale comprend un mécanisme de génération de signaux d'erreur qui sert à contrôler les coefficients du filtre adaptatif. Ce mécanisme peut être réalisé par exemple au moyen d'un générateur de formes d'onde servant à produire un signal de bande de base approximatif à la fréquence qui est un multiple entier de la fréquence de transmission en utilisant une pluralité d'estimations de données de transmission et de coefficients déterminés par la réponse impulsionnelle d'un trajet de transmission.

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