The invention relates to a wireless receiver which is enabled upon receiving a specific identification signal to receive data, and more particularly, which minimizes power consumption in an idle state and accurately discriminate the specific identification signal. The wireless receiver which receives the specific identification signal to enable a main transceiver for transmitting and receiving data includes a signal detector for receiving a signal in a particular frequency band to output a first wake-up signal, and an identification detector which is enabled by the first wake-up signal, decoding a signal in a particular frequency band, and discriminating whether or not the decoded signal is the identification signal to enable the main transceiver.