Subscriber frequency control system and method in point-to-multipoint RF communication system
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United States of America Patent
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Aug 11, 1998
Grant Date -
N/A
app pub date -
Nov 21, 1995
filing date -
Nov 21, 1995
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A frequency control system and method for minimizing frequency drifts in subscriber terminals in a point-to-multipoint system is described enabling the use of low cost oscillators in the Subscriber terminals by measuring the frequency offset of the subscriber terminal's receiver to estimate its oscillator frequency drift which is then used to correct the subscriber terminal's transmitter frequency and also by feedback of a frequency correction from the base station to the subscriber.
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