New impulse radio receivers in multipath environments

We propose two receiver structures of the impulse radio (IR) system to improve its performance in multipath environments. The impulse radio system has drawn much attention for future high-speed wireless communication services. The conventional IR receiver directly correlates received signals with the ideal reference waveform, which results in performance degradation in multipath environments. The key idea of the proposed receiver structures is to reflect the multipath characteristics into the IR receiver. One is to deconvolve the received waveform with estimates of the multipath gains to obtain the transmitted waveform while the other is to modify the reference waveform of the correlator according to the estimates of the multipath gains. We examine the performance of the proposed schemes for the statistical indoor wireless communication channel model using computer simulation.