20 research outputs found
Holographic Communication using Intelligent Surfaces
Holographic communication is intended as an holistic way to manipulate with
unprecedented flexibility the electromagnetic field generated or sensed by an
antenna. This is of particular interest when using large antennas at high
frequency (e.g., the millimeter wave or terahertz), whose operating condition
may easily fall in the Fresnel propagation region (radiating near-field), where
the classical plane wave propagation assumption is no longer valid. This paper
analyzes the optimal communication involving large intelligent surfaces,
realized for example with metamaterials as possible enabling technology for
holographic communication. It is shown that traditional propagation models must
be revised and that, when exploiting spherical wave propagation in the Fresnel
region with large surfaces, new opportunities are opened, for example, in terms
of the number of orthogonal communication channels.Comment: Submitted to IEEE Comm. Magazin