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Tripling the capacity of a point-to-point radio link by using electromagnetic vortices

2015; Wiley; Volume: 50; Issue: 6 Linguagem: Inglês

10.1002/2015rs005662

1944-799X

Fabrizio Tamburini, Elettra Mari, Giorgio Parisi, Fabio Spinello, Matteo Oldoni, Roberto A. Ravanelli, Piero Coassini, C.G. Someda, B. Thidé, Filippo Romanato,

Metamaterials and Metasurfaces Applications

In this paper we report the results from outdoor experiments showing that it is possible to increase the data transmission capacity using at least three coherent, orthogonal beams on the same frequency, 17.128 GHz, each in a unique orbital angular momentum state. Each beam was encoded with the digital modulations used in present-day telecommunications. We achieved an error-free throughput of 3 × 11 Mbit/s with four-Quadrature Amplitude Modulation over a 7 MHz bandwidth over 100 m and 150 m long links.