Taking Advantage of Multiple Scattering to Communicate with Time-Reversal Antennas

Arnaud Derode, Arnaud Tourin, Julien de Rosny, Mickaël Tanter, Sylvain Yon, and Mathias Fink
Phys. Rev. Lett. 90, 014301 – Published 10 January 2003

Abstract

We present an experimental demonstration showing that, contrary to first intuition, the more scattering a mesoscopic medium is, the more information can be conveyed through it. We used a multiple input—multiple output configuration: a multichannel ultrasonic time-reversal antenna is used to transmit random series of bits simultaneously to different receivers which were only a few wavelengths apart. Whereas the transmission is free of error when multiple scattering occurs in the propagation medium, the error rate is huge in a homogeneous medium.

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  • Received 22 July 2002

DOI:https://doi.org/10.1103/PhysRevLett.90.014301

©2003 American Physical Society

Authors & Affiliations

Arnaud Derode, Arnaud Tourin, Julien de Rosny, Mickaël Tanter, Sylvain Yon, and Mathias Fink

  • Laboratoire Ondes et Acoustique, ESPCI, Universite Paris VII, UMR 7587, 10 rue Vauquelin, 75005 Paris, France

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Vol. 90, Iss. 1 — 10 January 2003

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