REPEATING SYSTEM AND METHOD FOR CANCELLATION OF FEEDBACK INTERFERENCE SIGNAL WITH PRE-DISTORTION FUNCTION
First Claim
1. A repeating system for cancellation of a feedback interference signal, comprising:
- a PA (Power Amplifier) for power-amplifying an output signal;
a feedback ICS (Interference Cancellation System) for canceling a feedback interference signal and detecting a residual error;
a pre-distorter for compensating for an error of the PA by applying pre-distortion and compensating for the residual error by using information on the residual error detected by the feedback ICS to linearize the characteristic of the PA; and
a control unit for controlling the feedback ICS and the pre-distorter.
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Accused Products
Abstract
There is provided a repeating system for cancellation of a feedback interference signal, including: a PA (Power Amplifier) for power-amplifying an output signal; a feedback ICS (Interference Cancellation System) for canceling a feedback interference signal and detecting a residual error; a pre-distorter for compensating for an error of the PA by applying pre-distortion and compensating for the residual error by using information on the residual error detected by the feedback ICS to linearize the characteristic of the PA; and a control unit for controlling the feedback ICS and the pre-distorter.
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Citations
27 Claims
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1. A repeating system for cancellation of a feedback interference signal, comprising:
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a PA (Power Amplifier) for power-amplifying an output signal; a feedback ICS (Interference Cancellation System) for canceling a feedback interference signal and detecting a residual error; a pre-distorter for compensating for an error of the PA by applying pre-distortion and compensating for the residual error by using information on the residual error detected by the feedback ICS to linearize the characteristic of the PA; and a control unit for controlling the feedback ICS and the pre-distorter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An operation method of a repeating system for cancellation of a feedback interference signal, comprising the steps of:
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a) stopping the operation of a pre-distorter, initializing a feedback ICS, and operating the feedback ICS in normal mode to continuously update feedback interference cancellation coefficients; b) initializing a closed loop of the pre-distorter and primarily calculating pre-distortion coefficients, and initializing an open loop while applying pre-distortion by using the calculated pre-distortion coefficients to acquire residual error information; and c) converting the pre-distorter into normal mode to update the pre-distortion coefficients and the residual error coefficients. - View Dependent Claims (16, 17, 18, 19)
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20. A repeating system for cancellation of a feedback interference signal, comprising:
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a PA for power-amplifying an output signal; a feedback ICS for canceling a feedback interference signal existing in a relay signal; a pre-distorter for compensating for nonlinearity of the PA by using pre-distortion to linearize the characteristic of the PA; and a control unit for controlling the feedback ICS and the pre-distorter. - View Dependent Claims (21)
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22. A housing for accepting circuits with which an analog circuit unit and a digital circuit unit are linked,
wherein the analog circuit unit is disposed on at least one first printed board, the digital circuit unit is disposed on at least one second printed board, and the housing is divided into a plurality of acceptors by using a conductive accepting surface for radiating heat generated from the digital circuit unit and the analog circuit unit, the digital circuit unit and the analog circuit unit being accepted in one of the acceptors for easy heat radiation in the conductive accepting surface.
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26. A computer-readable recording medium that records a software program of implementing an operation method of a repeating system having a processor for cancellation of a feedback interference signal, comprising the functions of:
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stopping the operation of a pre-distorter, initializing a feedback ICS, and operating the feedback ICS in normal mode to continuously update feedback interference cancellation coefficients; initializing a closed loop of the pre-distorter and primarily calculating pre-distortion coefficients, and initializing an open loop while applying the pre-distortion by using the calculated pre-distortion coefficients to acquire residual error information; and converting the pre-distorter into normal mode and updating the pre-distortion coefficients and residual error coefficients. - View Dependent Claims (27)
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Specification