Space-Division Demultiplexing in Orbital-Angular-Momentum-Based MIMO Radio Systems

Author

Oldoni, Matteo ; Spinello, Fabio ; Mari, Elettra ; Parisi, Giuseppe ; Someda, Carlo Giacomo ; Tamburini, Fabrizio ; Romanato, Filippo ; Ravanelli, Roberto Antonio ; Coassini, Piero ; Thide, Bo

Author_Institution

R&D Dept., SIAE Microelettronica, Cologno Monzese, Italy

Volume

63

Issue

10

fYear

2015

Firstpage

4582

Lastpage

4587

Abstract

Radio beams that carry nonzero orbital angular momentum (OAM) are analyzed from the viewpoint of a multiple-input-multiple-output (MIMO) communication system. Often, the natural OAM-beam orthogonality cannot be fully exploited because of spatial constraints on the receiving antenna size. Therefore, we investigate how far OAM-induced phase variations can be exploited in spatial demultiplexing based on conventional (linear momentum) receivers. Performances are investigated versus position and size of the transmitting and receiving devices. The use of OAM-mode coherent superpositions is also considered, in view of recent work by Edfors et al. Our final goal is to assess the merits of an OAM-based MIMO system, in comparison with a conventional one.

Keywords

MIMO communication; radio receivers; receiving antennas; space division multiplexing; MIMO radio systems; linear momentum receivers; multiple-input-multiple-output communication system; orbital angular momentum; orbital-angular-momentum; radio beams; receiving antenna; receiving devices; space-division demultiplexing; spatial demultiplexing; transmitting devices; Antenna radiation patterns; Approximation methods; MIMO; Phased arrays; Receivers; Antenna spacing; MIMO; OAM; Orbital Angular Momentum; antenna spacing; multiple-input-multiple-output (MIMO); orbital angular momentum (OAM);

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2015.2456953

Filename

7160713