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System for transmission and/or reception of signals having electromagnetic modes with orbital angular momentum, and device and method thereof

A technology of orbital angular momentum and electromagnetic signals, applied in diversity/multi-antenna systems, signal channels, polarization/direction diversity, etc., can solve problems such as imposing phase delays

Active Publication Date: 2016-12-14
RAI-RADIOTELEVISIONE ITALIANA SPA +1
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  • Abstract
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Problems solved by technology

The antenna elements in a UCA are fed the same input signal, but a phase delay is applied to each element such that after a full rotation, the phase is increased by an integer (k) multiple of 2π

Method used

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  • System for transmission and/or reception of signals having electromagnetic modes with orbital angular momentum, and device and method thereof
  • System for transmission and/or reception of signals having electromagnetic modes with orbital angular momentum, and device and method thereof
  • System for transmission and/or reception of signals having electromagnetic modes with orbital angular momentum, and device and method thereof

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Embodiment Construction

[0023] refer to figure 1 , A system (1) for communication of signals having an electromagnetic mode with orbital angular momentum (OAM) comprising a system 1T for generating and transmitting said OAM signal and a system 1R for receiving said OAM signal.

[0024] The system 1 according to the invention provides M transmission channels L for multiplexing on a single radio channel with a bandwidth C by using an array of N transmitting antennas 5 and N receiving antennas 6 0 , L 1 ,...,L M-1 (Block 3), each transport channel has a bandwidth B.

[0025] In this way, reuse (M times) of available radio channels becomes possible even in the absence of multiple propagation paths. In addition, the employed (vertical, horizontal, circular) polarization of the waves constitutes a further degree of freedom allowing further reuse of the channel.

[0026] The communication system 1 can be shaped as a block 7 with M inputs and M outputs. Up to M transmitters BBTx each operating with a kn...

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Abstract

A system is described, along with the related device and method, for transmission and / or reception of signals having electromagnetic modes with orbital angular momentum (OAM), wherein said device is adapted to receive, at its input, electromagnetic signals from at least one transmitter, and is configured to apply a discrete Fourier transform to the electromagnetic signals in order to generate the signals having electromagnetic modes with orbital angular momentum.

Description

technical field [0001] The present invention relates to systems and related devices and methods for communication of signals having an electromagnetic mode with orbital angular momentum OAM. Background technique [0002] In recent years, due to the growth in the use and proliferation of broadband services and the resulting increase in the demand for spectral resources in wireless communication systems, alternative pathways for information transmission have been the subject of intensive analysis and research, such as, for example, different Modulation schemes, space diversity techniques with MIMO ("Multiple Input and Multiple Output") architectures, and more. [0003] One of the latest techniques is devoted to topological diversity due to its potential to improve the spectral efficiency (and thus capacity) of radio transmissions. [0004] It has been known for more than a century that electromagnetic waves carry angular momentum in addition to energy and linear momentum. In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/04H01Q21/20
CPCH04L5/04H01Q21/20H04B7/10H01Q1/246H01Q3/40H01Q21/06H01Q21/205
Inventor B·萨科A·德维塔
Owner RAI-RADIOTELEVISIONE ITALIANA SPA
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