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1. (WO1991006155) CODE ACQUISITION METHOD AND CIRCUIT FOR A SPREAD SPECTRUM SIGNAL RECEIVER
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/006155 International Application No.: PCT/EP1990/001666
Publication Date: 02.05.1991 International Filing Date: 02.10.1990
IPC:
H04B 1/707 (2011.01)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
B
TRANSMISSION
1
Details 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
69
Spread spectrum techniques
707
using direct sequence modulation
Applicants:
AGENCE SPATIALE EUROPEENNE [FR/FR]; 8-10, rue Mario-Nikis F-75738 Paris Cédex 15, FR (AllExceptUS)
ZAREMBOVITCH, Alain [FR/NL]; NL (UsOnly)
Inventors:
ZAREMBOVITCH, Alain; NL
Agent:
VANDERPERRE, Robert ; Bureau Vander Haeghen Avenue de la Toison d'Or 63 B-1060 Bruxelles, BE
Priority Data:
891336012.10.1989FR
Title (EN) CODE ACQUISITION METHOD AND CIRCUIT FOR A SPREAD SPECTRUM SIGNAL RECEIVER
(FR) PROCEDE ET CIRCUIT D'ACQUISITION DE CODE POUR RECEPTEUR DE SIGNAL A SPECTRE ETALE
Abstract:
(EN) The spread spectrum signal (S1) is converted into a digital binary signal (S2) having one binary character, and this binary signal is applied to several parallel detector circuits (10) each of which detects a distinct code position. Each detector circuit (10) simultaneously receives a phase-shifted version of a binary reference code (CR) and produces a signal (B3) which has a first binary state when the received signal corresponds to the code position of the detector circuit, and has a second binary state when this is not the case. The output signals (B3) are combined and/or coded in order to identify the correct code position for demodulating the received signal. The invention is used in communication systems receivers.
(FR) Le signal à spectre étalé (S1) est converti en signal binaire quantifié (S2) à un élément binaire, et ce signal binaire est appliqué à plusieurs circuits de détection (10) en parallèle, chacun de ces circuits de détection étant destiné à détecter une position de code distincte. Chaque circuit de détection (10) reçoit simultanément une version décalée d'un code de référence binaire (CR) et produit un signal (B3) ayant un premier état binaire lorsque le signal reçu correspond à la position de code du circuit de détection et ayant un second état binaire dans le cas contraire. Les signaux de sortie (B3) sont combinés et/ou codés pour identifier la position de code correcte afin de démoduler le signal reçu. L'invention est utilisée dans les récepteurs des systèmes de communications.
Designated States: CA, JP, US
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, IT, LU, NL, SE)
Publication Language: French (FR)
Filing Language: French (FR)
Also published as:
EP0451232US5214669CA2042608DE000069007609FR2653286