Efficient digital filter and method using coefficient...

Details Efficient digital filter and method using coefficient... Efficient digital filter and method using coefficient...

H - Electricity

03

H

H03H 17/02 (2006.01)

Patent

CA 2216128

A digital filter (200) suitable for use in a CDMA or other burst-mode communication device (100) employs precombining of filter coefficients to reduce filter complexity and power dissipation. The digital filter (200) includes a coefficient storage circuit (216) for storing the precombined coefficients, a selection circuit (212) for selecting appropriate precombined coefficients in response to the input signal and a combining circuit (214) for combining the appropriate precombined coefficients to produce a filtered signal.

L'invention est un filtre numérique (200) pour dispositif de communication AMDC ou tout autre dispositif de communication fonctionnant en mode salve (100). Le filtre de l'invention utilise une précombinaison des coefficients de filtrage pour réduire la complexité du matériel et la quantité d'énergie dissipée. Ce filtre numérique (200) comprend un circuit de stockage de coefficients précombinés (216), un circuit de sélection de coefficient précombiné (212) qui réagit à la réception du signal d'entrée et un circuit de combinaison de coefficients précombinés (214) qui produisent le signal filtré.

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