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Satellite systems for personal communications
IEEE Antennas & Propagation Magazine
A number of industry groups are planning to construct satellite systems that will provide personal communications services (PCS's) (typically voice, data, and fax) to users over small, handheld, cellular-type telephones. Some of these systems (e.g., Iridium and Globalstar) will be constructed using satellites in low earth orbit. Two (Ellipso and ICO) will employ medium earth orbit (3-8-h period), and still others (ACeS and Agrani) will operate from geostationary altitude. The origin anddoi:10.1109/74.598556 fatcat:lrutqigvxfh4dh2fkrlnp62f7q