Communication through a Diffusive Medium: Coherence and Capacity

Details Communication through a Diffusive Medium: Coherence and Capacity Communication through a Diffusive Medium: Coherence and Capacity

2000-09-07

arxiv.org/abs/cond-mat/0009097v1

Science vol 287, p. 287 (2000)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 3 figures

Scientific paper

10.1126/science.287.5451.287

Coherent wave propagation in disordered media gives rise to many fascinating phenomena as diverse as universal conductance fluctuations in mesoscopic metals and speckle patterns in light scattering. Here, the theory of electromagnetic wave propagation in diffusive media is combined with information theory to show how interference affects the information transmission rate between antenna arrays. Nontrivial dependencies of the information capacity on the nature of the antenna arrays are found, such as the dimensionality of the arrays and their direction with respect to the local scattering medium. This approach provides a physical picture for understanding the importance of scattering in the transfer of information through wireless communications.

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