Demonstration of Time-Reversal in Indoor Ultra-Wideband Communication: Time Domain Measurement

TL;DR

This paper demonstrates the feasibility of using time-reversal techniques in indoor ultra-wideband communication through time domain measurements, showing potential for improved signal focusing in complex environments.

Contribution

It provides the first experimental validation of time-reversal in indoor UWB channels using real-time measurements and equipment.

Findings

Time-reversal enhances signal focusing in LOS scenarios.

Channel responses are effectively reconstructed with time-reversal.

Feasibility confirmed for indoor UWB applications.

Abstract

Using time domain measurements, we assess the feasibility of time-reversal technique in ultra-wideband (UWB) communication. A typical indoor propagation channel is selected for the exploration. The channel response between receive and transmit antenna pairs is measured using time domain equipments which include an arbitrary wave generator (AWG) and a digital storage oscilloscope (DSO). The time-reversed version of the channel response is constructed with AWG and re-transmitted in the channel. The equivalent time reversed channel response is recorded. The properties of the time reversal technique in the line of sight (LOS) co-polar and cross-polar scenarios are measured.