Baseband processing method based on smart antenna and...

H - Electricity – 04 – B

Patent

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Details

H04B 15/00 (2006.01) H01Q 3/26 (2006.01) H01Q 25/00 (2006.01) H04B 1/12 (2006.01) H04B 7/04 (2006.01) H04B 7/216 (2006.01)

Patent

CA 2381383

This invention discloses a baseband processing method based on smart antenna and interference cancellation, which includes: A. making channel estimation to get channel response; B. picking up useful symbolic level signal from received digital signal by smart antenna beam forming based on the channel estimation; C. making signal reconstruction by using the got useful signal and adding scrambling code to get the chip level reconstructed signal; D. subtracting the reconstructed signal from received digital signal; E. executing steps B to D repeatedly to recover signal for all user. The method of the invention can solve various interference of multi-path propagation in CDMA system with smart antenna and get better results.

L'invention concerne un procédé de traitement de la bande de base faisant intervenir une antenne intelligente et l'annulation des interférences consistant a) à effectuer une estimation des canaux et obtenir une réponse de ceux-ci, b) à modeler le faisceau d'après les estimations des canaux issues des signaux et des symboles utiles des signaux de données reçus, c) à reconstruire les données grâce aux signaux obtenus utiles et à ajouter un code de perturbation, puis à obtenir les signaux reconstruits au niveau de la puce, d) à soustraire les signaux reconstruits des données reçues, d) à répéter les étapes de b à d et à récupérer tous les signaux utilisateurs. Le procédé de l'invention consiste à résoudre les problèmes liés aux interférences de propagation multitrajet dans les systèmes AMCR à l'aide d'une antenne intelligente.

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