Method and apparatus for cancelling spread-spectrum noise

H - Electricity – 04 – B

Patent

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H04B 1/10 (2006.01) H04B 1/12 (2006.01) H04B 1/69 (2006.01) H04B 1/707 (2006.01) H04B 3/23 (2006.01) H04L 27/20 (2006.01) H04L 27/227 (2006.01) H04L 27/30 (2006.01)

Patent

CA 2097692

A spread-spectrum noise canceller is provided for cancelling user code noise from a spread-spectrum communication channel. The spread-spectrum noise canceller includes a receiver for receiving a spread-spectrum signal (114, 202 or 302) including a first (108, 204 or 304) and at least a second (110, 206 or 306) signal as well as a noise canceller operatively coupled to the receiver for reducing spread-spectrum noise in the first received signal (108, 204 or 304) by substantially processing the at least second received signal out of the received spread-spectrum signal (114, 202 or 302). In addition, a method is provided which cancels user code noise from a spread-spectrum communication channel. The method includes receiving a spread-spectrum signal (114, 202 or 302) including a first (108, 204 or 304) and at least a second (110, 206 or 306) signal and subsequently reducing spread-spectrum noise in the first received signal (108, 204 or 304) by substantially processing the at least second received signal 110, 206 or 306) out of the received spread-spectrum signal (114, 202 or 302).

L'invention est un éliminateur de bruit à spectre étalé utilisé pour éliminer le bruit causé par les codes d'utilisateur dans les canaux de communication à étalement du spectre. Cet éliminateur de bruit à spectre étalé comporte un récepteur servant à capter les signaux à spectre étalé (114, 202 ou 302), dont un premier signal (108, 204 ou 304) et au moins un second signal (110, 206 ou 306), ainsi qu'un éliminateur de bruit couplé au récepteur pour réduire le bruit à spectre étalé dans le premier signal reçu (108, 204 ou 304) essentiellement en traitant au moins le second signal reçu parmi les signaux à spectre étalé reçus (114, 202 ou 302). De plus, une méthode d'élimination du bruit dû aux codes d'utilisateur dans les canaux de communication à étalement du spectre est divulguée. Cette méthode consiste à recevoir un signal à spectre étalé (114, 202 ou 302) comportant un premier signal (108, 204 ou 304) et au moins un second signal (110, 206 ou 306) et à réduire ensuite le bruit à spectre étalé contenu dans le premier signal reçu (108, 204 ou 304) essentiellement en traitant le second signal reçu (110, 206 ou 306) parmi les signaux à spectre étalé reçus (114, 202 ou 302).

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