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Journal of Optical Communications and Networking

Journal of Optical Communications and Networking

  • Editors: K. Bergman and V. Chan
  • Vol. 2, Iss. 5 — May. 1, 2010
  • pp: 293–304

Simplified Channel Model for Simulation of Free-Space Optical Communications

Bernhard Epple  »View Author Affiliations


Journal of Optical Communications and Networking, Vol. 2, Issue 5, pp. 293-304 (2010)
http://dx.doi.org/10.1364/JOCN.2.000293


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Abstract

Free-space optical (or optical wireless) communications represent an attractive technology for the realization of high-bandwidth wireless communications. However, for propagation through the atmosphere the characteristics of the optical signal are different from those of the signals from, e.g., fiber channels or radio-frequency wireless channels, and therefore the error characteristics on these links are also different. For evaluating fading mitigation techniques for optical wireless communications a channel model is needed that can be easily used by protocol designers. Existing channel models for optical wireless communications are based on atmospheric propagation theory and therefore require a deep physical understanding of the optical propagation through the atmosphere. The goal of this publication is to develop a simplified approach for modeling the received power dynamics of the atmospheric free-space optical channel. The proposed model consists of a random number generator and a low-pass filter and is therefore easy to implement and use. This approach is only valid for systems utilizing intensity modulation with direct detection, but this limitation is acceptable since most commercially available systems use this modulation format. The channel model is developed based on the statistics of received power measurements from a maritime-mobile link, a land-mobile link, and a satellite downlink.

© 2010 Optical Society of America

OCIS Codes
(060.2605) Fiber optics and optical communications : Free-space optical communication
(200.2605) Optics in computing : Free-space optical communication

ToC Category:
Research Papers

History
Original Manuscript: February 12, 2010
Manuscript Accepted: March 28, 2010
Published: April 30, 2010

Citation
Bernhard Epple, "Simplified Channel Model for Simulation of Free-Space Optical Communications," J. Opt. Commun. Netw. 2, 293-304 (2010)
http://www.opticsinfobase.org/jocn/abstract.cfm?URI=jocn-2-5-293

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