期刊
IEEE COMMUNICATIONS MAGAZINE
卷 59, 期 6, 页码 80-80出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/MCOM.2021.9475173
关键词
Surface waves; Propagation; Wireless networks; Millimeter wave technology; Reliability theory; Millimeter wave propagation; Metamaterials; Holography
Holographic communication is a holistic way to manipulate the electromagnetic field with unprecedented flexibility, especially useful for high-frequency communication with large antennas. It opens up new opportunities for communication channels when exploiting spherical wave propagation in the near-field region.
Holographic communication is intended as a 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., at millimeter-wave or terahertz), whose operating condition may easily fall in the Fresnel region (radiating near-field), where the classical plane wave propagation assumption is no longer valid. This article 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 near-field region, new opportunities are opened, for example, in terms of feasible orthogonal communication channels.
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