Doppler measurement and compensation in mobile satellite communications systems

Author

Liu, Qingchong

Author_Institution

Hughes Network Syst. Inc., Germantown, MD, USA

Volume

1

fYear

1999

fDate

6/21/1905 12:00:00 AM

Firstpage

316

Abstract

The frequency errors dominated by the dynamic Doppler is analyzed for mobile satellite communication systems employing fast-moving satellites. Methods are proposed and analyzed for the basestations to measure and compensate the dynamic Doppler of large range. It is shown that the proposed methods give the minimum uncertainty of the dynamic Doppler for the modem to handle. Therefore, these methods are optimal for frequency synchronization and Doppler measurement in mobile satellite communications systems

Keywords

Doppler measurement; mobile satellite communication; synchronisation; CDMA; TDMA/FDMA; basestations; control channel; dynamic Doppler compensation; dynamic Doppler measurement; fast-moving satellites; frequency errors; frequency synchronization; minimum uncertainty; mobile satellite communications systems; modem; optimal methods; Artificial satellites; Bandwidth; Demodulation; Doppler measurements; Low earth orbit satellites; Modems; Radio frequency; Satellite broadcasting; Satellite communication; Time division multiple access;

fLanguage

English

Publisher

ieee

Conference_Titel

Military Communications Conference Proceedings, 1999. MILCOM 1999. IEEE

Conference_Location

Atlantic City, NJ

Print_ISBN

0-7803-5538-5

Type

conf

DOI

10.1109/MILCOM.1999.822695

Filename

822695