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UWB Time Reversal: From Theory to Practice

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Executive Summary

This paper discusses the theory behind Ultra-WideBand (UWB) transmit waveform design, and reports a proof-of-concept UWB radio testbed with waveform level precoding. Unlike a narrow-band channel, a UWB channel contains a large number of resolved multipath components, which opens a door for exploring new features offered by UWB. Waveform level optimization is meaningful, but it is a great challenge to generate an arbitrary waveform adapting to the channel condition at Giga Hertz sampling frequency. Based on the Channel Impulse Response (CIR) estimation available in the transmitter, a desired waveform is synthesized, aiming at performance maximization.

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