The use of big LEO satellite systems and EUREKA 147 DAB to provide reliable BC reception

Author

Prosch, Theodor

Author_Institution

Suddeutscher Rundfunk, Stuttgart, Germany

Volume

43

Issue

2

fYear

1997

fDate

6/1/1997 12:00:00 AM

Firstpage

185

Lastpage

190

Abstract

A LEO broadcasting satellite system for EUREKA 147-DAB is discussed and analyzed. It can provide a continuous, worldwide service, which is not interrupted by satellite handovers. A complete S-DAB service is provided by overlapping cellular service areas. Each cell may have an individual uplink station without any sophisticated components. The system analysis indicates that the link margin of the proposed system can overcome the problems of blockage and foliage attenuation, which are significant in the alternative GEO/HEO systems. The analysis also reveals that the specifications of the EUREKA DAB COFDM signal are adequate to cope with range and range rate effects due to the satellite motion. The system concept is based on the exploitation of range, range rate, and angular information onboard the satellites with respect to each individual uplink station in order to compensate for Doppler frequency shifts and for variable signal propagation delay

Keywords

Doppler effect; Doppler shift; cellular radio; delays; digital audio broadcasting; direct broadcasting by satellite; frequency division multiplexing; mobile satellite communication; COFDM signal; Doppler frequency shift compensation; EUREKA 147 DAB; LEO broadcasting satellite system; S-DAB service; angular information; blockage; cellular service areas; foliage attenuation; link margin; mobile reception; range; range rate; satellite motion; signal propagation delay; system analysis; uplink station; Attenuation; Frequency; Low earth orbit satellites; Power amplifiers; Power generation; Propagation delay; Proposals; Receivers; Satellite broadcasting; Signal analysis;

fLanguage

English

Journal_Title

Broadcasting, IEEE Transactions on

Publisher

ieee

ISSN

0018-9316

Type

jour

DOI

10.1109/11.598368

Filename

598368