Crosstalk Suppression in Structured Light Free-Space Optical Communication

IEEE Open Journal of the Communications Society

Boon S. Ooi¹  Abderrahmen Trichili¹  Mohamed-Slim Alouini¹  Dmitrii Briantcev¹ 

[1] Computer, Electrical and Mathematical Sciences Division, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia;

关键词: Atmospheric turbulence;    free space optics;    spatial mode multiplexing;    structured light modes;    zero-forcing;   

DOI  :  10.1109/OJCOMS.2020.3029116

来源: DOAJ

【 摘 要 】

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 In the modeling, we account for various limiting factors, including phase estimation errors, noise, imperfect, and outdated channel-state information on the pre-coding approach.

【 授权许可】

Unknown