|発明の名称||SNEAK CANCELLER, AND SNEAK CANCELLING METHOD|
PROBLEM TO BE SOLVED: To reduce reception power of an interference signal which sneaks from a transmitter into a receiver in a repeater station, with regard to signals output from the receiver equipped in the repeater station.
SOLUTION: A sneak canceller 3 comprises: equalizers 300-1 to 300-m which perform equalization processing to reduce the reception power of interference signals sneaked from a transmitter 309, for analog reception signals received by antenna elements equipped in receivers 330-1 to 330-M by using filter coefficients calculated during a period when a wireless signal is not received; and a digital signal processing unit 30 which quantizes the reception signals subjected to equalization processing in the equalizers 300-1 to 300-m, suppresses interference signals contained in the quantized reception signals based on the transfer function of a sneak route from the transmitter 309 to the receivers 330-1 to 330-M, and outputs a digital reception signal where the interference signals are suppressed to the transmitter 309 while converting the digital reception signal into an analog transmission signal.
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