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1. (WO1997019542) METHOD OF SYNCHRONIZING A DIGITAL SIGNAL RECEIVER
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/019542 International Application No.: PCT/DE1996/001350
Publication Date: 29.05.1997 International Filing Date: 24.07.1996
Chapter 2 Demand Filed: 22.01.1997
IPC:
H04L 27/38 (2006.01) ,H04H 40/27 (2008.01) ,H04J 11/00 (2006.01) ,H04L 25/02 (2006.01) ,H04L 27/22 (2006.01) ,H04L 27/26 (2006.01) ,H04L 7/02 (2006.01) ,H04L 7/027 (2006.01) ,H04L 7/04 (2006.01) ,H04L 7/08 (2006.01) ,H04H 20/72 (2008.01)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27
Modulated-carrier systems
32
Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18, or H04L27/26213
34
Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
38
Demodulator circuits; Receiver circuits
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
H
BROADCAST COMMUNICATION
40
Arrangements specially adapted for receiving broadcast information
18
Arrangements characterised by circuits or components specially adapted for receiving
27
specially adapted for broadcast systems covered by groups H04H20/53-H04H20/86110
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
J
MULTIPLEX COMMUNICATION
11
Orthogonal multiplex systems
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
25
Baseband systems
02
Details
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27
Modulated-carrier systems
18
Phase-modulated carrier systems, i.e. using phase-shift keying
22
Demodulator circuits; Receiver circuits
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
27
Modulated-carrier systems
26
Systems using multi-frequency codes
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
7
Arrangements for synchronising receiver with transmitter
02
Speed or phase control by the received code signals, the signals containing no special synchronisation information
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
7
Arrangements for synchronising receiver with transmitter
02
Speed or phase control by the received code signals, the signals containing no special synchronisation information
027
extracting the synchronising or clock signal from the received signal spectrum, e.g. by using a resonant or bandpass circuit
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
7
Arrangements for synchronising receiver with transmitter
04
Speed or phase control by synchronisation signals
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
7
Arrangements for synchronising receiver with transmitter
04
Speed or phase control by synchronisation signals
08
the synchronisation signals recurring cyclically
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
H
BROADCAST COMMUNICATION
20
Arrangements for broadcast or for distribution combined with broadcast
65
Arrangements characterised by transmission systems for broadcast
71
Wireless systems
72
of terrestrial networks
Applicants:
ROBERT BOSCH GMBH [DE/DE]; Postfach 30 02 20 D-70442 Stuttgart, DE (AllExceptUS)
BOLLE, Michael [DE/DE]; DE (UsOnly)
Inventors:
BOLLE, Michael; DE
Priority Data:
195 42 991.517.11.1995DE
Title (DE) VERFAHREN ZUR SYNCHRONISIERUNG EINES EMPFÄNGERS FÜR DIGITALE SIGNALE
(EN) METHOD OF SYNCHRONIZING A DIGITAL SIGNAL RECEIVER
(FR) PROCEDE DE SYNCHRONISATION D'UN RECEPTEUR DE SIGNAUX NUMERIQUES
Abstract:
(DE) Es werden ein Verfahren und eine Anordnung zur Synchronisierung eines Empfängers für digitale Signale beschrieben. Die Synchronisierungsinformation wird dabei aus dem Schwerpunkt der quadrierten Kanalimpulsantwort abgeleitet, der direkt aus den Abtastwerten der Kanalfrequenzantwort berechnet wird. Damit wird eine separate Berechung der Kanalimpulsantwort über eine inverse Fouriertransformation aus der Kanalfrequenzantwort entbehrlich. Die Kanalfrequenzantwort läßt sich auf einfache Weise durch Korrelation eines empfangenen mit einem im Empfänger abgespeicherten Referenzsignals bestimmen.
(EN) The invention concerns a method and device for synchronizing a digital signal receiver, the synchronization data being derived from the centre of mass of the squared channel pulse response calculated directly from the sample values of the channel frequency response. In this way, separate calculation of the channel pulse response from the channel frequency response via an inverse Fourier transform is unnecessary. The channel frequency response can easily be determined by correlating a received signal with a reference signal stored in the receiver.
(FR) L'invention concerne un procédé et un système de synchronisation d'un récepteur de signaux numériques. L'information de synchronisation est dérivée du centre de gravité de la réponse impulsionnelle du canal élevée au carré, qui est calculé directement à partir des valeurs d'échantillonnage de la courbe de fréquence du canal, ce qui rend superflu un calcul séparé de la réponse impulsionnelle du canal par l'intermédiaire d'une transformation de Fourier inverse à partir de la courbe de fréquence du canal. La courbe de réponse du canal peut être déterminée aisément par corrélation d'un signal reçu avec un signal de référence mémorisé.
Designated States: AU, CA, CN, JP, KR, NO, US
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: German (DE)
Filing Language: German (DE)
Also published as:
NO19980123ES2233972EP0861549US5987077JP2000500937 CN1200214
CA2228766KR1019990067616DK0861549AU1996067319