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1. WO2012068307 - METHOD AND APPARATUS FOR SYNCHRONIZING MULTIPLE TRANSMITTERS

Publication Number WO/2012/068307
Publication Date 24.05.2012
International Application No. PCT/US2011/061073
International Filing Date 16.11.2011
IPC
H04J 3/06 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
JMULTIPLEX COMMUNICATION
3Time-division multiplex systems
02Details
06Synchronising arrangements
CPC
H04B 7/0671
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
04using two or more spaced independent antennas
06at the transmitting station
0613using simultaneous transmission
0667of delayed versions of same signal
0671using different delays between antennas
H04B 7/0673
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
04using two or more spaced independent antennas
06at the transmitting station
0613using simultaneous transmission
0667of delayed versions of same signal
0673using feedback from receiving side
H04W 56/0015
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
56Synchronisation arrangements
001Synchronization between nodes
0015one node acting as a reference for the others
H04W 56/002
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
56Synchronisation arrangements
001Synchronization between nodes
002Mutual synchronization
H04W 56/0035
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
56Synchronisation arrangements
0035detecting errors in frequency or phase
Applicants
  • FOX DIGITAL ENTERPRISES, INC. [US]/[US] (AllExceptUS)
  • WETMORE, Robert E. [US]/[US] (UsOnly)
Inventors
  • WETMORE, Robert E.
Agents
  • COOPER, Victor G.
Priority Data
12/947,60416.11.2010US
13/078,69801.04.2011US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND APPARATUS FOR SYNCHRONIZING MULTIPLE TRANSMITTERS
(FR) PROCÉDÉ ET APPAREIL DE SYNCHRONISATION DE MULTIPLES ÉMETTEURS
Abstract
(EN)
A method and apparatus for synchronizing multiple transmitters is disclosed. A global time reference is used to synchronize the arrival of data from a plurality of secondary transmitters in a receiver station. In one embodiment, the global time reference is provided by a GPS satellite, and may also be used to synchronize the carriers of the signals received at the receiver station from each of the plurality of transmitters. In one embodiment, a pilot signal used for ATSC applications is added by the secondary transmitters.
(FR)
La présente invention concerne un procédé et un appareil permettant de synchroniser de multiples émetteurs. L'invention utilise une référence de temps mondial pour synchroniser l'arrivée de données d'une pluralité d'émetteurs secondaires dans une station réceptrice. Dans un mode de réalisation, la référence de temps mondial est fournie par un satellite GPS et peut également être utilisée pour synchroniser les porteuses des signaux reçus dans la station réceptrice en provenance de chaque émetteur de la pluralité d'émetteurs. Dans un mode de réalisation, un signal pilote utilisé pour des applications ATSC est ajouté aux émetteurs secondaires.
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