The ELLIPSOTM System: Elliptical Low Orbits for Mobile Communications and Other Optimum System Elements

On 5 Nov. 1990, Ellipsat filed with the FCC the first application to provide voice communication services via low earth orbiting (LEO) satellites. The proposed system, ELLIPSOTM, aims at achieving end-user costs comparable to those in the cellular industry. On 3 Jun. 1991 Ellipsat filed for the second complement of its system.

Ellipsat was also the first company to propose combined position determination and mobile voice services via low-earth orbiting satellites. Ellipsat is still the only proponent of elliptical orbits for any commercial system in the United States.

ELLIPSOTM uses a spectrum efficient combination of FDMA and CDMA techniques. Ellipsat's strategy is to tailor required capacity to user demand, reduce initial system costs and investment risks, and allow the provision of services at affordable end-user prices.

ELLIPSOTM offers optimum features in all the components of its system, elliptical orbits, small satellites, integrated protocol and signaling system, integrated end-user electronics, novel marketing approach based on the cooperation with the tenets of mobile communications, end-user costs that are affordable, and a low risk approach as deployment is tailored to the growth of its customer base.

The efficient design of the ELLIPSOTM constellation and system allows estimated end-user costs in the $.50 per minute range, five to six times less than any other system of comparable capability.