METHOD FOR PREVENTING RE-INPUTTED SIGNAL OF WIRELESS REPEATER USING MULTI PATH SEARCHER AND DEVICE THEREFOR

摘要

PURPOSE: A device for preventing a re-inputted signal of a wireless repeater using a multi path searcher is provided to install a signal searcher for searching a pilot channel and synchronizing the searched pilot channel in an input part of a wireless repeater for receiving a signal of a base station, thereby efficiently reducing a re-inputted signal. CONSTITUTION: A receiving antenna(410) receives a base station transmission signal(213) and a forward re-input signal(214), and a portion of signals delivered to a transmission antenna. A signal portion of the receiving antenna(410) is branched, and is inputted to a multi path searcher(415). The multi path searcher(415) performs an autocorrelation integration process, searches a signal energy value and time difference information of a signal whose autocorrelation integration value exceeds a predetermined threshold value, and transmits the searched signal energy value and the time difference information to a controller(416). The controller(416) controls a repeater gain in order to minimize the forward re-input signal(214) by using the signal inputted from the multi path searcher(415).