DEMODULATOR AND DATA DEMODULATION METHOD ON THE BPM-UWB RECEIVER

PURPOSE: A demodulator and data demodulation method on the BPM-UWB receiver are provided to maximize the signal-noise ratio in the multipath channel environment and demodulate the frequency component. CONSTITUTION: Data demodulation(100) changes data signal of the time domain to the frequency component. The frequency component is demodulated in consideration of the channel distortion information into the digital value. The data demodulation comprises the first frequency transform unit and matched filter. The first frequency transform unit(110) changes data signal of the time domain into the frequency component. The output having the peaked signal to noise ratio the matched filter(120) annexes the channel distortion information to the frequency component is obtained. The channel estimator(200) offers the channel distortion information of the radio communications channel to data demodulation. The channel estimator comprises the secondary frequency transform unit and digital signal processor. The secondary frequency transform unit(210) changes the training signal consisting of a plurality of pulse trains received through the radio communications channel into the frequency component. The digital signal processor(220) annexes the weight component to the frequency component.