Tdd repeater for acquisition of synchronization using rf power and the method thereof

The present invention relates to a method for acquiring synchronization in the TDD repeater and a TDD repeater for acquiring synchronization by using a RF power, TDD repeater for acquiring synchronization using RF power in accordance with the present invention, amplifies the downlink signal output downstream amplification unit; Upstream amplification section for amplifying and outputting a reverse signal; RF power detector for continuously detecting the power of a forward RF signal to be inputted to the down-amplifier section at a predetermined time interval; A power supply providing a downward bias to the amplifier and up-amplifier unit; And a sync signal when it receives the input a synchronization signal that is transmitted from the base station, but a signal for sequentially controlled by the down-amplifier and uplink amplification part a predetermined time interval the output to the power supply unit according to the synchronization signal transmitted from the base station when the wrong not, the acquisition and then detecting the level of RF power through the RF power detector itself synchronization, and thereby the control signal to control the downstream amplifier and uplink amplification part sequentially at a predetermined time interval the power supply the controller outputting; It includes. Consequently, it is possible even when the sync signal is sent from the base station to detect the RF power over a predetermined set value RF power is detected by obtaining a synchronizing signal on the basis of that point, to control the forward and reverse directions. Repeaters, WiMAX, OFDM, TDD, Time Division, power detection