Communication system employing reuse of satellite spectrum for terrestrial communication
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United States of America Patent
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May 11, 2004
Grant Date -
Apr 24, 2003
app pub date -
Jun 26, 1998
filing date -
Jun 26, 1998
priority date (Note) -
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Abstract
A terrestrial communication system using satellite uplink and downlink frequencies is disclosed. A terrestrial cell site produces a signal at a satellite uplink frequency that is transmitted to a terrestrial user terminal. The terrestrial cell site receives a signal at a satellite downlink frequency that was transmitted by a terrestrial user terminal. The terrestrial cell site may include a signal nulling means in the direction of a satellite producing signals at the uplink and downlink frequencies.
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