Method and apparatus for processing multiple wireless...

H - Electricity – 04 – B

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H04B 1/26 (2006.01)

Patent

CA 2578037

A method and apparatus for processing multiple wireless communication services in a receiver (100). A receiver (100) receives more than one wireless communication service simultaneously via a wireless interface. Each service is transmitted via a different carrier frequency band. The multiple received carrier signals are down-converted to an intermediate frequency (IF) band using a mixer (110, 116) and a local oscillator (LO). The LO and sampling frequencies are adjusted such that the converted IF band signals of the input signals are spectrally adjacent or overlapping each other to some degree. SINAD of the services is measured at each of a plurality of spectrally overlapping conditions. The LO frequencies and the sampling frequency are then adjusted based on the SINAD measurement results.

La présente invention se rapporte à un procédé et à un appareil permettant de traiter de multiples services de communication sans fil dans un récepteur. Un récepteur reçoit simultanément plus d'un service de communication sans fil par l'intermédiaire d'une interface sans fil. Chaque service est transmis par une bande de fréquence porteuse différente. La fréquence des multiples signaux porteurs reçus est abaissée à une bande de fréquence intermédiaire (IF) à l'aide d'un mélangeur et d'un oscillateur local (LO). Les fréquences LO et d'échantillonnage sont réglées de façon que les signaux de la bande IF convertis des signaux d'entrée soient adjacents ou se chevauchent dans une certaine mesure sur le plan spectral. Le rapport SINAD des services est mesuré à chacun d'une pluralité d'états à chevauchement spectral. Les fréquences LO et la fréquence d'échantillonnage sont ensuite réglées sur la base des résultats de la mesure du rapport SINAD.

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