Energy-Efficient Emerging Optical Wireless Links

George K. Varotsos, Konstantinos Aidinis, Hector E. Nistazakis and Zoran Gajic ()
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George K. Varotsos: Section of Electronic Physics and Systems, Department of Physics, National and Kapodistrian University of Athens, 15784 Athens, Greece
Konstantinos Aidinis: Department of Electrical and Computer Engineering, Ajman University, Ajman P.O. Box 346, United Arab Emirates
Hector E. Nistazakis: Section of Electronic Physics and Systems, Department of Physics, National and Kapodistrian University of Athens, 15784 Athens, Greece
Zoran Gajic: Electrical and Computer Engineering Department, Rutgers University, 94 Brett Road, Piscataway, NJ 08854-8058, USA

Energies, 2023, vol. 16, issue 18, 1-28

Abstract: In recent years, the tremendous increase in data traffic carried by wireless communication networks has generated the urgent need for establishing more energy-efficient wireless communication systems. Recent advances in semiconductor and light devices have triggered remarkable research interest to the development of these optical wireless communication (OWC) links. Among them, free-space optical (FSO) links and, more recently, ultraviolet links which operate within the (UV-C) spectral band, have been considered as prime candidates to create both high speed and power effective line-of-sight (LOS) and non-light-of-sight (NLOS) free-air communication links, respectively. Moreover, transdermal optical wireless (TOW) links for telemetry with medical implants minimize the expense of power for the implant. In the current review, a background on the energy efficiency challenges in wireless communication is presented. Each of these OWC technologies is mainly discussed in terms of key energy consumption requirements and major limiting factors that affect their power performance. Energy-efficient modulation formats as well as other powerful techniques for performance enhancement such as diversity and relaying are assessed. The survey is concluded with a discussion regarding their future energy consumption requirements and trends.

Keywords: energy-efficient communications; optical wireless communication links; ultraviolet links; free-space optical links; transdermal optical wireless links (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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