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Information transfer through disordered media by diffuse waves.

S E Skipetrov1

  • 1Laboratoire de Physique et Modélisation des Milieux Condensés, CNRS, 38042 Grenoble, France. Sergey.Skipetrov@grenoble.cnrs.fr

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|April 12, 2003
PubMed
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Information capacity in diffuse wave communication channels is linked to mesoscopic correlations. Optimal receiver spacing maximizes average capacity, scaling with signal-to-noise ratio for effective disordered medium information transfer.

Area of Science:

  • Wave physics
  • Information theory
  • Disordered media

Background:

  • Diffuse wave fields in disordered media exhibit complex correlations.
  • Understanding information capacity is crucial for communication through such media.

Purpose of the Study:

  • To analyze the information content and capacity of diffuse wave fields.
  • To establish the relationship between mesoscopic correlations and information transfer.
  • To determine optimal parameters for maximizing communication capacity.

Main Methods:

  • Theoretical analysis of scalar multiple-scattered, diffuse wave fields.
  • Derivation of information capacity for communication channels using diffuse waves.
  • Investigation of mesoscopic correlations in linear arrays of transmitters/receivers.

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Main Results:

  • Information capacity (C) is directly related to mesoscopic correlations.
  • Average capacity () scales linearly with the number of array elements (n).
  • Optimal receiver spacing (a) depends non-monotonically on signal-to-noise ratio (S/N), with distinct behaviors above and below a critical S/N value.

Conclusions:

  • Mesoscopic correlations are key determinants of information capacity in diffuse wave systems.
  • Optimal receiver spacing strategies can significantly enhance communication performance.
  • The study provides explicit expressions for average capacity and optimal spacing, crucial for designing diffuse wave communication systems.