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1. WO1996006487 - CDMA RECEIVING METHOD AND RECEIVER

Publication Number WO/1996/006487
Publication Date 29.02.1996
International Application No. PCT/FI1995/000451
International Filing Date 23.08.1995
IPC
H04B 1/707 2011.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/-H04B13/123; Details of transmission systems not characterised by the medium used for transmission
69Spread spectrum techniques
707using direct sequence modulation
H04B 7/005 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
005Control of transmission; Equalising
H04B 7/26 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
24for communication between two or more posts
26at least one of which is mobile
CPC
H04B 1/71052
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
69Spread spectrum techniques
707using direct sequence modulation
7097Interference-related aspects
7103the interference being multiple access interference
7105Joint detection techniques, e.g. linear detectors
71052using decorrelation matrix
Applicants
  • NOKIA TELECOMMUNICATIONS OY [FI/FI]; Mäkkylän puistotie 1 FIN-02600 Espoo, FI (AllExceptUS)
  • LAAKSO, Timo [FI/FI]; FI (UsOnly)
  • HOTTINEN, Ari [FI/FI]; FI (UsOnly)
Inventors
  • LAAKSO, Timo; FI
  • HOTTINEN, Ari; FI
Agents
  • TEKNOPOLIS KOLSTER OY; Oy Kolster AB Iso Roobertinkatu 23 P.O. Box 148 FIN-00121 Helsinki, FI
Priority Data
94390625.08.1994FI
Publication Language English (EN)
Filing Language Finnish (FI)
Designated States
Title
(EN) CDMA RECEIVING METHOD AND RECEIVER
(FR) METHODE DE RECEPTION CDMA ET RECEPTEUR
Abstract
(EN)
The invention relates to a receiving method and a receiver in a data transmission system in which a CDMA multiple access method is applied, the receiver comprising a decorrelating detector (33). In order that the receiver might function effectively both in the event of multiuser interference and on a multipath channel, the decorrelating detector (33) of the receiver according to the invention comprises separate means (40) for equalizing the effect of the multipath channel in the received signal, and filters (41) maatched with the codes contained in the received signal, and means (42) for multiplying the received signal by the inverse matrix of the cross-correlation matrix of the codes contained in the received signal.
(FR)
Méthode de réception et récepteur d'un système de transmission de données fonctionnant par accès multiples par différence de codes. Le récepteur comprend un détecteur de décorrélation (33). Pour que le récepteur puisse fonctionner de manière efficace aussi bien en cas d'interférences causées par des usagers multiples que sur un canal multivoie, le détecteur de décorrélation (33) du récepteur conçu dans le cadre de cette invention comprend un dispositif distinct (40) assurant l'égalisation de l'effet du canal multivoie dans le signal reçu, et des filtres (41) correspondant aux codes contenus dans le signal reçu, ainsi qu'un dispositif (42) assurant la multiplication du signal reçu par la matrice inverse de la matrice de corrélation croisée des codes contenus dans le signal reçu.
Also published as
NO19961641
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