Apparatus for reducing channel interference between...

H - Electricity – 04 – B

Patent

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H04B 1/38 (2006.01)

Patent

CA 2561547

Apparatus for reducing adjacent channel interference between proximate wireless communication units. Each wireless communication unit includes a digital baseband circuit and an analog baseband circuit. The digital baseband circuit includes at least one group delay compensation equalizer and at least one finite-impulse response (FIR) filter. The analog baseband circuit includes a radio (transmitter section), a power amplifier and a narrowband filter. The narrowband filter compensates for deficiencies of the power amplifier including distortion and radio frequency (RF) power spill over. The group delay compensation filter compensates for undesired characteristics (e.g., group delay variation) exhibited by the narrowband filter.

Dispositif servant à limiter les interférences entre les voies contiguës entre les unités de communication radio situées à proximité les unes des autres. Chaque unité de communication radio comprend un circuit de bande de base numérique et un circuit de bande de base analogique. Le circuit de bande de base numérique comporte au moins un équaliseur de correction de retard de groupe et au moins un filtre de réponse d'impulsion finie (FIR). Le circuit de bande de base analogique comprend une radio (partie émetteur), un amplificateur de puissance et un filtre de bande étroite. Ce filtre de bande étroite corrige les déficiences de l'amplificateur de puissance y compris la distorsion et la déperdition de puissance radiofréquence (RF). Le filtre de correction de retard de groupe corrige les caractéristiques indésirables (par exemple, variation du retard de groupe) présentées par le filtre de bande étroite.

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