|発明の名称||SNEAK CANCELER, AND SNEAK CANCELING METHOD|
PROBLEM TO BE SOLVED: To provide a sneak canceler which can cancel an interference signal that turns to a receiver from a transmitter even when the transmitter has a large amplification factor.
SOLUTION: A sneak canceler includes a plurality of weight multipliers for multiplying a received signal by a plurality of weight coefficients corresponding to each element of a receiving array antenna, an adder for adding an output of the weight multiplier to an output of a virtual path weight multiplier, a subtractor for subtracting a feedback signal from an output signal of the adder and outputting the subtracted signal as an error signal, a whitening filter for whitening the error signal, a delay line for causing the error signal to be delayed and outputting the delayed signal to the transmitter as an output signal, an adaptive filter for outputting the signal being an output signal to the transmitter to the subtractor as the feedback signal, a control module for controlling the adaptive filter based on the output of the whitening filter so that an interference signal is minimized, and a weight-variable control device for controlling a plurality of weight coefficients corresponding to the respective elements so that an error between an array output signal and a known input signal is minimized.
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