Pulse or digital communications – Equalizers – Automatic
Patent
1992-04-03
1995-07-25
Chin, Stephen
Pulse or digital communications
Equalizers
Automatic
375341, 375346, 3647242, H03H 730, H03D 104, H04L 2706
Patent
active
054369282
ABSTRACT:
In an apparatus for equalization in an impulse response of mobile transmission which varies fast in mobile radio communication, a signal generating circuit outputs a signal sequence undergoing transition at a predetermined period and corresponding to each state transition and a signal sequence corresponding to the path of each state transition. An adaptive filter receives the signal sequence corresponding to each state transition and outputs an estimated signal for each state transition. The apparatus also includes state estimating circuits for performing state estimation by using the square of an estimation error obtained by subtracting each estimated signal from a sampled signal, and a control circuit for controlling the tap coefficient of the adaptive filter by using the RLS algorithm in order to minimize the square of the estimation error.
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Fukuawa Kazuhiko
Suzuki Hiroshi
Bocure Tesfaldet
Chin Stephen
Nippon Telegraph and Telephone Corporation
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