Interference cancellation repeater and repeating method
First Claim
1. An interference cancellation repeater, comprising:
- a reception unit configured to receive an analog signal;
an analog-to-digital (AD) converter unit configured to convert the received analog signal into a digital signal;
a digital processing unit configured to determine whether a feedback signal is present in the digital signal by analyzing a correlation between the digital signal and a previous transmission signal, and to perform an operation of cancelling the feedback signal with a control unit of the digital processing unit if, as a result of the determination, it is determined that the feedback signal is included in the digital signal, wherein the digital processing unit comprises an adaptive filter unit comprising a plurality of adaptive filters for performing the operation of cancelling the feedback signal;
a digital-to-analog (DA) converter unit configured to convert a signal output from the digital processing unit into a transmission analog signal; and
a transmission unit configured to send the transmission analog signal;
wherein the digital processing unit further comprises a buffer unit configured to store information about the previous transmission signal that is a signal transmitted by the transmission unit before the received analog signal.
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Accused Products
Abstract
Disclosed herein an interference cancellation repeater and repeating method. The interference cancellation repeater includes a reception unit, an analog-to-digital (AD) converter unit, a digital processing unit, a digital-to-analog (DA) converter unit, and a transmission unit. The reception unit receives an analog signal. The AD converter unit converts the analog signal into a digital signal. The digital processing unit determines whether a feedback signal is present by analyzing the correlation between the digital signal and a previous transmission signal, and performs an operation of cancelling the feedback signal if, as a result of the determination, it is determined that the feedback signal is present. The DA converter unit converts a signal output from the digital processing unit into a transmission analog signal. The transmission unit sends the transmission analog signal.
8 Citations
14 Claims
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1. An interference cancellation repeater, comprising:
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a reception unit configured to receive an analog signal; an analog-to-digital (AD) converter unit configured to convert the received analog signal into a digital signal; a digital processing unit configured to determine whether a feedback signal is present in the digital signal by analyzing a correlation between the digital signal and a previous transmission signal, and to perform an operation of cancelling the feedback signal with a control unit of the digital processing unit if, as a result of the determination, it is determined that the feedback signal is included in the digital signal, wherein the digital processing unit comprises an adaptive filter unit comprising a plurality of adaptive filters for performing the operation of cancelling the feedback signal; a digital-to-analog (DA) converter unit configured to convert a signal output from the digital processing unit into a transmission analog signal; and a transmission unit configured to send the transmission analog signal; wherein the digital processing unit further comprises a buffer unit configured to store information about the previous transmission signal that is a signal transmitted by the transmission unit before the received analog signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An interference cancellation repeating method, comprising:
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receiving, by a reception unit, an analog signal; converting, by an analog-to-digital (AD) converter unit, the received analog signal into a digital signal; determining, by a digital processing unit, whether a feedback signal is present in the digital signal by analyzing a correlation between the digital signal and a previous transmission signal, and performing, by a control unit of the digital processing unit, an operation of cancelling the feedback signal if, as a result of the determination, it is determined that the feedback signal is included in the digital signal, wherein the digital processing unit comprises an adaptive filter unit comprising a plurality of adaptive filters for performing the operation of cancelling the feedback signal; converting, by a digital-to-analog (DA) converter unit, a signal output from the digital processing unit into a transmission analog signal; and sending, by a transmission unit, the transmission analog signal; wherein a buffer unit of the digital processing unit stores information about the previous transmission signal that is a signal transmitted by the transmission unit before the received analog signal. - View Dependent Claims (12, 13, 14)
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Specification