The Iridium Communications Systems

Author

Leopold, Raymond J.

Author_Institution

Motorola Satellite Commun., Chandler, AZ, USA

fYear

1992

fDate

16-20 Nov 1992

Firstpage

451

Abstract

The technical parameters of Motorola´s iridium communications system are discussed. This system is a worldwide, digital, satellite-based, cellular, personal communications system primarily intended to provide commercial, low-density, portable service via handheld, mobile or transportable user units, employing low-profile antennas, to millions of users throughout the world. Calls can be made and received anywhere in the world with a personal, pocket-size, portable unit. A constellation of small (700 kg), smart satellites are internetted to form the network´s backbone. Small, battery-powered, cellular-telephone-like user units communicate directly to the satellites

Keywords

cellular radio; digital radio systems; personal communication networks; satellite relay systems; Iridium Communications Systems; Motorola; digital cellular radio; earth stations; handheld mobile units; low-profile antennas; personal communications system; portable service; satellite systems; transportable user units; IP networks; Internet telephony; Manufacturing; Mobile antennas; Satellite antennas; Satellite broadcasting; Satellite communication; Space technology; Telephone sets; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Singapore ICCS/ISITA '92. 'Communications on the Move'

Print_ISBN

0-7803-0803-4

Type

conf

DOI

10.1109/ICCS.1992.254910

Filename

254910