Q. The Iridium System was halted in 1999 due to

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Q. AMPS is an analog cellular phone system using

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Q. AMPS uses FDMA to divide each 25-MHz into

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Q. Low Earth Orbit (LEO) satellites can be divided into

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Q. Under new ownership, the iridium system re-started in

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Q. LEO stands for

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Q. In Global Service for Mobile (GSM), each band is 25 MHz in width, shifted toward

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Q. The numbers in the cells defines the

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Q. The third-generation Cellular Telephony, concept started in

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Q. In Teledesic System, the orbits are at an altitude of

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Q. Low Earth Orbit (LEO) is below an altitude of

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Q. In cellular telephony, the radius of a cell is typically

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Q. A multiframe of Global Service for Mobile (GSM) has a duration of

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Q. In reverse transmission of Interim Standard 95 (IS-95), symbols are divided into six-symbol

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Q. Global Positioning Service (GPS) uses 24 satellites in

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Q. Satellite networks are like

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Q. The footprint of Low Earth Orbit (LEO) normally has a diameter of

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Q. The third generation of Cellular Telephony can provide both, the Voice Communication and

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Q. Global Positioning Service (GPS) is based on a principle called

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Q. The number of satellites were reduced in

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