Long-Term Propagation Statistics and Availability Performance Assessment for Simulated Terrestrial Hybrid FSO/RF System

Long-term monthly and annual statistics of the attenuation of electromagnetic waves that have been obtained from 6 years of measurements on a free space optical path, 853 meters long, with a wavelength of 850 nm and on a precisely parallel radio path with a frequency of 58 GHz are presented. All the attenuation events observed are systematically classified according to the hydrometeor type causing the particular event. Monthly and yearly propagation statistics on the free space optical path and radio path are obtained. The influence of individual hydrometeors on attenuation is analysed. The obtained propagation statistics are compared to the calculated statistics using ITU-R models. The calculated attenuation statistics both at 850 nm and 58 GHz underestimate the measured statistics for higher attenuation levels. The availability performance of a simulated hybrid FSO/RF system is analysed based on the measured data.

[1]  Erich Leitgeb,et al.  High availability of hybrid wireless networks , 2004, SPIE Photonics Europe.

[2]  P. Pagé,et al.  Characteristics of precipitation for propagation modelling , 1996 .

[3]  Steve Hranilovic,et al.  Soft-switching hybrid FSO/RF links using short-length raptor codes: design and implementation , 2009, IEEE Journal on Selected Areas in Communications.

[4]  Christian Boisrobert,et al.  Free-Space Optics , 2006 .

[5]  Probability distributions relevant to radiowave propagation modelling P Series Radiowave propagation , 2013 .

[6]  Propagation data and prediction methods required for the design of terrestrial line-of-sight systems , 2001 .

[7]  Isaac I. Kim,et al.  Atmospheric propagation characteristics of highest importance to commercial free space optics , 2003, SPIE LASE.

[8]  Heinz A. Willebrand,et al.  Free space optics: a viable last-mile alternative , 2001, SPIE/OSA/IEEE Asia Communications and Photonics.

[9]  Anton Dandarov,et al.  A General Model of the Atmospheric Scattering in the Wavelength Interval 300 - 1100nm , 2009 .

[10]  K. Kazaura,et al.  Experiment on Regional Broadband Network Using Free-Space-Optical Communication Systems , 2007, Journal of Lightwave Technology.

[11]  RECOMMENDATION ITU-R P.1410-1-Propagation data and prediction methods required for the design of terrestrial broadband millimetric radio access systems operating in a frequency range of about 20-50 GHz , 2001 .

[12]  M. Grábner,et al.  Visibility and attenuation due to hydrometeors at 850 nm mEASURED on an 850 m path , 2008, 2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing.

[13]  H.G. Ilk,et al.  Design, availability and reliability analysis on an experimental outdoor FSO/RF communication system , 2005, Proceedings of 2005 7th International Conference Transparent Optical Networks, 2005..

[14]  Prediction methods required for the design of terrestrial free-space optical links ( Question , 2007 .

[15]  Romano Fantacci,et al.  Body Area Networking: Technology and Applications , 2009, IEEE J. Sel. Areas Commun..

[16]  Isaac I. Kim,et al.  Comparison of laser beam propagation at 785 nm and 1550 nm in fog and haze for optical wireless communications , 2001, SPIE Optics East.

[17]  G. Kandus,et al.  Simulation and analysis of FSO/RF switch over for different atmospheric effects , 2009, 2009 10th International Conference on Telecommunications.

[18]  Hervé Sizun,et al.  Fog attenuation prediction for optical and infrared waves , 2004 .