On the design of an optical wireless link for small cell backhaul communication and energy harvesting

John Fakidis, Muhammad Ijaz, Stepan Kucera, Holger Claussen, Harald Haas

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

6 Citations (Scopus)

Abstract

The outdoor deployment of small cells (SCs) in heterogeneous cellular networks for mobile communications is advantageous from both the capacity and the power consumption point of view. In practice, however, the network operators are limited by the high costs associated with the provisioning of backhaul communication and power supply to the SCs. This paper addresses these operational challenges by using optical links at the same time for high-capacity backhaul and wireless power supply. In particular, we present an experimental design of an optical wireless link for energy harvesting (EH). Our system consists of (i) a high-brightness white light-emitting diode (WLED) with an output luminous flux of 2200 lm, and (ii) an amorphous silicon (a-Si) solar panel. The distance of the experimental link ranges from 0.5m to 5m. The visible-light EH from the solar panel is negatively affected by the Lambertian radiation pattern of the WLED. In order to increase the collimation of the source light, we use three optical elements - a spherical lens, a reflector, and a parabolic mirror. The latter is shown to achieve a gain of 28.4 dB in EH over a distance of 5 m compared to the non-collimated case.

Original languageEnglish
Title of host publication2014 IEEE 25th Annual International Symposium on Personal, Indoor, and Mobile Radio Communication, PIMRC 2014
Pages58-62
Number of pages5
ISBN (Electronic)9781479949120
DOIs
Publication statusPublished - 25 Jun 2014
Event2014 25th IEEE Annual International Symposium on Personal, Indoor, and Mobile Radio Communication, IEEE PIMRC 2014 - Washington, United States
Duration: 2 Sep 20145 Sep 2014

Publication series

NameIEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
Volume2014-June

Conference

Conference2014 25th IEEE Annual International Symposium on Personal, Indoor, and Mobile Radio Communication, IEEE PIMRC 2014
Country/TerritoryUnited States
CityWashington
Period2/09/145/09/14

Keywords

  • optical wireless link
  • energy harvesting

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