| 摘要 |
PURPOSE: A transmitting and receiving device for canceling RFI(Radio Frequency Interference) in a VDSL(Very high data rate Digital Subscriber Line) and a method therefor are provided to cancel the RFI between a frequency band of wireless communication and a frequency band of a VDSL system by judging an information value and an initial reference value detected in an ANF-I(Adaptive Notch Filter-Ingress) of a receiving terminal, providing information to a transmitting terminal when interference is generated in a telephone line, canceling a corresponding frequency band signal, and transmitting a frequency signal in the transmitting terminal. CONSTITUTION: A receiving terminal(220R) has an ANF-I(220R-1) and an RFI confirming unit(220R-2). The ANF-I(220R-1) filters a frequency signal transmitted from a transmitting terminal(200T). The RFI confirming unit(220R-2) compares a reference value stored in a table of the RFI confirming unit(220R-2) with the output of the ANF-I(220R-1), detects a frequency band in which interference occurs in a telephone line(210), and transmits information of the detected frequency band to the transmitting terminal(200T). The transmitting terminal(200T) has a switch(200T-1), an ANF-E(Egress)(200T-3) and a control unit(200T-2). The switch(200T-1) switches a frequency signal to be transmitted. The ANF-E(Egress)(200T-3) filters the frequency signal inputted through the switch(200T-1). The control unit(200T-2) controls the switch(200T-1) on the basis of frequency band information transmitted from the receiving terminal(220R) so that a signal to be transmitted is inputted in the ANF-E(200T-3). The control unit(200T-2) controls the ANF-E(200T-3) to cancel the frequency band in which the interference occurs and transmit the frequency signal.
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