Automatic realignment with electronic steering of free-space-optical transceivers in MANETs: A proof-of-concept prototype

Auhtors: Abdullah Sevincer, Mehmet Bilgi, Murat Yuksel

Abstract:
Free-Space-Optical (FSO) communication has the potential to achieve very high wireless communication rates at tens of GHz. Although it has the advantage of high-speed optical modulation, FSO communication is prone to mobility and it requires establishment and maintenance of line-of-sight (LOS) between FSO transceivers since FSO transceivers are highly directional. We consider FSO structures with multiple transceivers placed on a spherical shape with angular diversity and tackle the problem of automatically detecting and maintaining LOS alignment among neighbor multi-transceiver FSO structures. We present a prototype implementation of such multi-transceiver electronically-steered communication structures. Our prototype uses a simple LOS detection and establishment protocol and assigns logical data streams to appropriate physical links. We show that by using multiple directional transceivers and an auto-alignment mechanism, it is possible to maintain optical wireless links in a mobile setting with minimal disruptions and overhead.

Keywords:
Free-space-optics
Mobile ad hoc networks
Angular diversity Spatial reuse
Directional communication
Spherical FSO structures

Published in: Ad Hoc Networks (Volume 11, Issue 1, January 2013)

Publisher: Elsevier

ISSN Information: 1570-8705

Automatic realignment with electronic steering of free-space-optical transceivers in MANETs: A proof-of-concept prototype

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