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MIMO processing based on higher-order Poincaré spheres
Author(s): Gil M. Fernandes; Nelson J. Muga; Armando N. Pinto
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Paper Abstract

A multi-input multi-output (MIMO) algorithm based on higher-order Poincaré spheres is demonstrated for space-division multiplexing (SDM) systems. The MIMO algorithm is modulation format agnostic, robust to frequency offset and does not require training sequences. In this approach, the space-multiplexed signal is decomposed in sets of two tributary signals, with each set represented in a higher-order Poincaré sphere. For any arbitrary complex modulation format, the samples of two tributaries can be represented in a given higher-order Poincaré sphere with a symmetry plane. The crosstalk along propagation changes the spatial orientation of this plane and, therefore, it can be compensated by computing and realigning the best fit plane. We show how the transmitted signal can be successfully recovered using this procedure for all possible combinations of tributaries. Moreover, we analyze the convergence speed for the MIMO technique considering several optical-to-noise ratios.

Paper Details

Date Published: 22 August 2017
PDF: 6 pages
Proc. SPIE 10453, Third International Conference on Applications of Optics and Photonics, 104532I (22 August 2017); doi: 10.1117/12.2276251
Show Author Affiliations
Gil M. Fernandes, Univ. of Aveiro (Portugal)
Instituto de Telecomunicações (Portugal)
Nelson J. Muga, Univ. of Aveiro (Portugal)
Instituto de Telecomunicações (Portugal)
i3N (Portugal)
Armando N. Pinto, Univ. of Aveiro (Portugal)
Instituto de Telecomunicações (Portugal)


Published in SPIE Proceedings Vol. 10453:
Third International Conference on Applications of Optics and Photonics
Manuel Filipe P. C. M. Martins Costa, Editor(s)

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