Crosstalk Suppression in Structured Light Free-Space Optical Communication

Abstract
Using space as an additional degree of freedom is one possible solution to cope with future bandwidth issues. In free-space optics (FSO), spatial multiplexing of structured light modes is limited by the impact of the atmospheric turbulence. Therefore, beating the effects of turbulence is a major problem for structured light-based FSO communication. Here, we model the propagation of Laguerre-Gaussian beams using a modified von Kármán turbulence model with time-dependent turbulence phase screens. We equally investigate the performance of a zero-forcing pre-coding technique to mitigate the effects of turbulence in a full-duplex Laguerre-Gaussian mode based FSO. In the modeling, we account for various limiting factors, including phase estimation errors, noise, imperfect, and outdated channel-state information on the pre-coding approach.

Citation
Briantcev, D., Trichili, A., Ooi, B. S., & Alouini, M.-S. (2020). Crosstalk Suppression in Structured Light Free-Space Optical Communication. IEEE Open Journal of the Communications Society, 1–1. doi:10.1109/ojcoms.2020.3029116

Publisher
Institute of Electrical and Electronics Engineers (IEEE)

Journal
IEEE Open Journal of the Communications Society

DOI
10.1109/OJCOMS.2020.3029116

Additional Links
https://ieeexplore.ieee.org/document/9215035/
https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=9215035

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