Method and apparatus for determining scrambling codes for...

H - Electricity – 04 – J

Patent

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H04J 11/00 (2006.01)

Patent

CA 2619054

Methods and apparatuses for determining scrambling codes for minimizing co- channel interference in a communication system. A method in accordance with the present invention comprises defining at least one initial default sequence (700) , generating a scrambling code from the initial default sequence (702) , scrambling using the generated scrambling code (704) , comparing the scrambled headers with all other scrambled headers having their cross-correlations below another threshold (706) , and saving the scrambling code if the comparison determines that the cross-correlation between the scrambled headers and the other scrambled headers are also below the another threshold (708) .

La présente invention se rapporte à des procédés et à des appareils permettant de déterminer des codes d'embrouillage destinés à réduire au minimum le brouillage dans la même voie dans un système de communication. Un procédé selon l'invention consiste : à définir au moins une séquence par défaut initiale (700) ; à générer un code d'embrouillage (702) ; à embrouiller un signal à l'aide du code d'embrouillage généré (704) ; à comparer les en-têtes embrouillés à tous les autres en-têtes embrouillés dont les corrélations croisées sont inférieures à un autre seuil (706) ; et à sauvegarder le code d'embrouillage si la comparaison a permis de déterminer que les corrélations croisées entre les en-têtes embrouillés et les autres en-têtes embrouillés sont également inférieures à l'autre seuil (708).

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