Pulse or digital communications – Receivers – Interference or noise reduction
Reexamination Certificate
2007-03-06
2007-03-06
Tran, Khanh (Department: 2611)
Pulse or digital communications
Receivers
Interference or noise reduction
C375S231000
Reexamination Certificate
active
10366106
ABSTRACT:
A method for reducing interference in a desired signal in a GSM communication system uses a finite-impulse-response filter for alternate linear equalization. The method includes a first step (300) of inputting a burst of data of a received waveform including interference from a channel of the communication system. A next step (302) includes training the finite-impulse-response filter with a set of symbols of specific quadrature phase, known a priori, in the burst of data of the received waveform. For example known real only and imaginary only symbols are alternatively selected from a midamble of the data burst. A next step (304) includes operating on the received waveform with the finite-impulse-response filter to alternately linearly equalize the burst of data to provide an estimate of the desired signal.
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Bachu Raja S.
Buckley Michael Eoin
Stewart Kenneth A.
Wilkins Clint S.
Mancini Brian M.
Motorola Inc.
Tran Khanh
Vaas Randall S.
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