In an ultra-wideband receiver for receiving discontinuous pulse signals and for demodulating the receive signals, an amplifier amplifies signals received, and a demodulator demodulates the amplified signals. A controller controls the demodulator and the amplifier based on the signals demodulated by the demodulator. The controller sends a signal to the amplifier to activate the amplifier only when the signals are received in order to decrease the power consumption in the amplifier. Further, the demodulator demodulates the amplified signals by generating a plurality of single pulses as template pulses, multiplies the amplified signals with the plurality of signal pulses, and integrates the multiplied signals to obtain demodulated data.