RADIO REPEATER AND ECHO SIGNAL CANCELLER METHOD THEREOF

摘要

PURPOSE: A radio repeater and an echo signal canceller method thereof are provided to remove an echo signal component from an input signal by copying the echo signal component within an input signal through a CSS-LMS(Complex Signed-Signed Least Mean Square) algorithm in order to remove an echo signal. CONSTITUTION: A reception unit(151) receives a signal from a base station or a terminal, and a signal removal unit(153) removes an echo signal component in an input signal. A limiter(155) limits the size of an echo signal component-removed relay signal into a reference signal size. A transmission unit transmits the relay signal limited to the reference signal size to the terminal or the base station.