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1. WO2000044117 - MULTI-STAGE CDMA SYNCHRONIZATION WITH PARALLEL EXECUTION

Publication Number WO/2000/044117
Publication Date 27.07.2000
International Application No. PCT/US2000/000482
International Filing Date 18.01.2000
Chapter 2 Demand Filed 21.08.2000
IPC
H04L 7/00 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
7Arrangements for synchronising receiver with transmitter
H04W 48/08 2009.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
48Access restriction; Network selection; Access point selection
08Access restriction or access information delivery, e.g. discovery data delivery
H04W 48/16 2009.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
48Access restriction; Network selection; Access point selection
16Discovering; Processing access restriction or access information
CPC
H04B 1/70735
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
7073Synchronisation aspects
70735Code identification
H04B 1/70752
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
7073Synchronisation aspects
7075with code phase acquisition
70751using partial detection
70752Partial correlation
H04B 1/708
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
7073Synchronisation aspects
7075with code phase acquisition
708Parallel implementation
Applicants
  • ERICSSON, INC. [US/US]; 7001 Development Drive Research Triangle Park, NC 27709, US
Inventors
  • DENT, Paul, W.; US
Agents
  • DUBOIS, Steven, M.; Burns, Doane, Swecker & Mathis L.L.P. P.O. Box 1404 Alexandria, VA 22313-1404, US
Priority Data
09/236,08325.01.1999US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) MULTI-STAGE CDMA SYNCHRONIZATION WITH PARALLEL EXECUTION
(FR) SYNCHRONIZATION AMCR MULTI-ETAGES A EXECUTION PARALLELE
Abstract
(EN)
Methods and systems for time synchronizing a receiver to a spread spectrum signal are described. Exemplary embodiments of the present invention provide for at least a two step process in which, at a first step, a number of candidate synchronization frequencies or timings are identified, followed by confirming one of the candidates as a correct synchronization state at a second or final step. According to the present invention, the confirmation step may be performed at the same time as the step of identifying further candidates by processing the same received signal samples in different ways.
(FR)
L'invention concerne des procédés et des systèmes de synchronisation temporelle d'un récepteur et d'un signal à spectre étalé. Des modes de réalisation peuvent, par exemple, comporter deux étapes qui consistent premièrement, à identifier un nombre de fréquences ou de temps de synchronisation candidats et, ensuite, à confirmer qu'un des candidats représente un état de synchronisation correct. Cette invention permet de procéder à la confirmation simultanément à l'identification d'autres candidats, en traitant les mêmes échantillons de signaux reçus de différentes façons.
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