Multiplex communications – Duplex – Transmit/receive interaction control
Patent
1996-10-31
1999-02-02
Hsu, Alpus H.
Multiplex communications
Duplex
Transmit/receive interaction control
379411, 36472419, H04B 323, G06F 1531
Patent
active
058674861
ABSTRACT:
A method of and an apparatus for unknown system identification with an adaptive filter of effective and inactive taps is disclosed. An adaptive tap position control is executed by active tap number update and effects coefficient update by using a first step size till completion of a predetermined number of times of active tap number update and by using a second step size in a second state held after the completion of the predetermined number of times of active tap number update. The adaptive tap position control without counting the number of times of coefficient update is executed as active tap number update in the first state when the ratio of an input power supplied to the minimum absolute value coefficient tap to the total input power supplied to the active taps is less than a predetermined ratio.
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Hsu Alpus H.
NEC Corporation
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