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1. WO2002039611 - SYSTEM FOR DIRECT SEQUENCE SPREADING

Publication Number WO/2002/039611
Publication Date 16.05.2002
International Application No. PCT/US2001/047367
International Filing Date 03.11.2001
Chapter 2 Demand Filed 31.05.2002
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
CPC
H04B 1/707
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
H04B 1/7093
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
709Correlator structure
7093Matched filter type
Applicants
  • QUALCOMM INCORPORATED [US]/[US]
Inventors
  • BUTLER, Brian, K.
  • MOHSENI, Jafar, M.
  • JOHN, Deepu
  • ZHANG, Haitao
Agents
  • WADSWORTH, Philip, R.
Priority Data
60/245,23203.11.2000US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SYSTEM FOR DIRECT SEQUENCE SPREADING
(FR) SYSTEME D'ETALEMENT EN SEQUENCE DIRECTE
Abstract
(EN)
A spreading system according to an embodiment of the invention spreads two data signals. The system produces a filtered signal that is based on one of the data signals and an output signal that is based on both of the data signals. In one example, a spreading system is used to perform QPSK spreading of two data signals, including separate processing of the two data signals, in a practical manner. Such separate control may include filtering and/or gain control.
(FR)
Dans un mode de réalisation, l'invention concerne un système d'étalement qui étale deux signaux de données. Le système produit un signal filtré fondé sur un des signaux de données, et un signal de sortie fondé sur les deux signaux de données. Dans un exemple, le système d'étalement permet d'exécuter l'étalement MDPQ de deux signaux de données, y compris le traitement séparé des deux signaux de données, d'une manière pratique. Cette régulation séparée peut comporter une régulation de filtrage et/ou de gain.
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