Systems and methods for inter-system sharing of satellite communications frequencies within a common footprint
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United States of America Patent
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Apr 12, 2011
Grant Date -
Nov 2, 2006
app pub date -
Jul 14, 2006
filing date -
Sep 11, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
Two satellite communications systems can use the same frequency or frequencies in geographically overlapping footprints, without creating undue interference in a given system that is caused by the same frequency signal(s) that is/are used by the other system. In particular, an aggregate Effective Isotropic Radiated Power (EIRP) of the radioterminals and/or ancillary terrestrial components of a second satellite communications system in the common footprint is sufficiently low, and/or the receive antenna gain of a first satellite communications system is sufficiently low compared to the receive antenna gain of the second satellite communications system, so as to increase an aggregate receiver noise that is seen by the first satellite system receivers by an amount that does not substantially change a Quality of Service (QoS) of the first satellite communications system.
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