Telecommunications – Transmitter and receiver at separate stations – With control signal
Reexamination Certificate
2007-03-07
2010-11-02
Anderson, Matthew D (Department: 2618)
Telecommunications
Transmitter and receiver at separate stations
With control signal
C455S024000, C455S126000, C330S149000, C330S136000, C330S085000, C330S107000, C330S129000, C375S222000, C379S406060, C381S071110, C381S071120, C381S071100, C381S071500, C708S323000, C714S704000, C370S315000
Reexamination Certificate
active
07826801
ABSTRACT:
An adaptive feedback estimation and cancellation (AFEC) apparatus includes: a controller for generating and outputting control information by using a synchronization signal from an external synchronization acquisition unit and base station information, in order to remove a feedback signal that exists in a forward/reverse repeater signal to be repeated and then send the forward/reverse repeater signal; a first feedback prediction canceller for adaptively removing a feedback signal that exists in the forward repeater signal based on the control information from the controller and automatically adjusting the gain of the forward repeater signal; and a second feedback prediction canceller for adaptively removing a feedback signal that exists in the reverse repeater signal based on the control information from the controller and automatically controlling the gain of the reverse repeater signal.
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Baik Sung-Jun
Chang Byung-Soo
Kim Jeong-Hwi
Lee Jong-Sik
Lee Seong-Choon
Airpoint
Anderson Matthew D
Blakely & Sokoloff, Taylor & Zafman
Gonzales April G
KT Corporation
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