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1. (WO1999049602) DIGITAL BROADCAST SYSTEM USING SATELLITE DIRECT BROADCAST AND TERRESTRIAL REPEATER
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/1999/049602 International Application No.: PCT/US1998/014280
Publication Date: 30.09.1999 International Filing Date: 10.07.1998
Chapter 2 Demand Filed: 26.10.1999
IPC:
H04B 7/185 (2006.01) ,H04H 20/74 (2008.01) ,H04H 40/90 (2008.01)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
B
TRANSMISSION
7
Radio transmission systems, i.e. using radiation field
14
Relay systems
15
Active relay systems
185
Space-based or airborne stations
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
74
of satellite networks
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
90
specially adapted for satellite broadcast receiving
Applicants:
CAMPANELLA, S., Joseph [US/US]; US (UsOnly)
WORLDSPACE MANAGEMENT CORPORATION [US/US]; 2400 N Street, N.W. Washington, DC 20037, US (AL, AM, AT, AU, AZ, BA, BB, BE, BF, BG, BJ, BR, BY, CA, CF, CG, CH, CI, CM, CN, CU, CY, CZ, DE, DK, EE, ES, FI, FR, GA, GB, GE, GH, GM, GN, GR, GW, HR, HU, ID, IE, IL, IS, IT, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MC, MD, MG, MK, ML, MN, MR, MW, MX, NE, NL, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, SN, SZ, TD, TG, TJ, TM, TR, TT, UA, UG, UZ, VN, YU, ZW)
Inventors:
CAMPANELLA, S., Joseph; US
Agent:
HOLMES, John, E. ; Roylance, Abrams, Berdo & Goodman, LLP Suite 600 1300 19th Street, N.W. Washington, DC 20036, US
Priority Data:
09/058,66310.04.1998US
60/079,59127.03.1998US
Title (EN) DIGITAL BROADCAST SYSTEM USING SATELLITE DIRECT BROADCAST AND TERRESTRIAL REPEATER
(FR) SYSTEME DE DIFFUSION NUMERIQUE UTILISANT UN SYSTEME DE RADIODIFFUSION DIRECTE PAR SATELLITE ET UN REPETEUR SITUE SUR LA TERRE
Abstract:
(EN) A digital broadcast system is provided which uses a satellite direct radio broadcast system having different downlink modulation options in combination with a terrestrial repeater network employing different re-broadcasting modulation options to achieve high availability reception by mobile radios (14), static radios and portable radios (14) in urban areas, suburban metropolitan areas, and rural areas, including geographically open areas and geographic areas characterized by high terrain elevations. Two-arm and three-arm receivers are provided which each comprise a combined architecture for receiving both satellite and terrestrial signals, and for maximum likelihood combining of received signals for diversity purposes. A terrestrial repeater is provided for reformatting a TDM satellite signal as a multicarrier modulated terrestrial signal. Configurations for indoor and outdoor terrestrial repeaters are also provided.
(FR) On décrit un système de diffusion numérique qui utilise un système de radiodiffusion directe par satellite ayant différentes options de modulation de liaison descendante qui fonctionne en association avec un réseau de répéteurs situés sur la Terre utilisant différentes options de modulation de réémission pour assurer la réception à disponibilité élevée par des radios mobiles (14), des radios statiques et des radios portatives (14) situées dans des zones urbaines, des zones de banlieue métropolitaine et dans des zones rurales, y compris dans des zones géographiquement ouvertes et dans des zones géographiques se caractérisant par des éléments montagneux élevés. On utilise des récepteurs à deux ou à trois bras qui comprennent chacun une architecture mixte permettant de recevoir les signaux provenant des satellites ou de la Terre, et de combiner avec un maximum de vraisemblance les signaux reçus pour des objectifs de diversité. Un répéteur situé sur la Terre est prévu pour reformater un signal de satellite MRT sous forme d'un signal terrestre modulé à porteuses multiples. Des configurations de répéteurs terrestres couverts ou de plein air sont également décrites.
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Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, GH, GM, HR, HU, ID, IL, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, US, UZ, VN, YU, ZW
African Regional Intellectual Property Organization (ARIPO) (GH, GM, KE, LS, MW, SD, SZ, UG, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)