Patent ID: 8344800
Filing Date: 2013-01-01
Classification: H04B

Abstract:
1. A repeating system for cancellation of a feedback interference signal, comprising: a power amplifier (PA) for power-amplifying an output signal; a feedback interference cancellation system (ICS) for outputting a first output signal, canceling a feedback interference signal in the first output signal, detecting a residual error in the first output signal of the feedback ICS, and outputting a second signal indicating information on the residual error; a pre-distorter for receiving the first output signal of the feedback ICS, compensating for an error of the PA by applying pre-distortion and compensating for the residual error by using the information on the residual error to linearize characteristics of the PA; and a control unit for controlling the feedback ICS and the pre-distorter, wherein the control unit is configured to receive the second output signal of the feedback ICS and control the pre-distorter to perform the compensating of the residual error in response to the received second output signal of the feedback ICS and wherein the canceling of the feedback interference signal in the first output signal by the feedback ICS is separate and different from the compensating of the residual error by the pre-distorter.