Method and intelligent digital beam forming system for interference mitigation
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United States of America Patent
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May 19, 1998
Grant Date -
N/A
app pub date -
Oct 30, 1996
filing date -
Oct 30, 1996
priority date (Note) -
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status (Latency Note)
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Abstract
An intelligent digital beam former (10) in conjunction with a satellite based array antenna (20) provides a plurality of dynamically controllable antenna beams (52) for communication with subscriber units (90) on earth's surface. Interference is mitigated placing a null in the transmit and receive antenna patterns at the location of the interfering signal by adjusting digital beam forming coefficients. As the interfering signal moves relative to the satellite, the interfering signal is tracked to maintain interference mitigation. The digital beam forming coefficients are also dynamically adjusted to help maximize signal quality of communications with subscriber units.
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