H - Electricity – 04 – B
Patent
H - Electricity
04
B
325/120
H04B 1/10 (2006.01) H04L 27/01 (2006.01)
Patent
CA 2013451
In a device for use in processing a device input signal carrying a digital symbol sequence, a reception filter filters the device input signal and produces a filter output signal having a high order curvature distortion. The high order curvature distortion results in a predetermined frequency band from adjacent interference on the predetermined frequency band by other frequency bands adjacent to the predetermined frequency band. Responsive to the filter output signal, an adaptive amplitude equalizing unit equalizes the high order curvature distortion and produces as a first equalized signal. When the device input signal decreases, the adaptive amplitude equalizing unit overestimates the high order curvature distortion to produce intersymbol interference because of appropriately suppressing the other frequency bands by the reception filter. In order to resolve the problem, an adaptive transversal equalizing unit is connected to the adaptive amplitude equalizing unit and equalizes the intersymbol interference along a time axis of the first equalized signal to produce an output signal with the curvature distortion and the intersymbol interference suppressed.
Corporation Nec
Smart & Biggar
LandOfFree
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