Proposed parameters of specific rain attenuation prediction for Free Space Optics link operating in tropical region

As the demand for higher and unlimited bandwidth for communication channel is increased, Free Space Optics (FSO) is a good alternative solution. As it is protocol transparent, easy to install, cost effective and have capabilities like fiber optics, its demand rises very fast. Weather condition, however is the limiting factor for FSO link. In the temperate region the major blockage for FSO link feasibility is fog. In the tropical region high rainfall rate is expected to be the major drawback of FSO link availability. Rain attenuation is the most significant to influence FSO link availability in tropical region. As for now the available k and α values are developed using data from temperate regions. Therefore, the objective of this paper is to propose new parameters for specific rain attenuation prediction model that represents tropical weather condition. The proposed values are derived from data measured in Malaysia and using methods recommended by ITU-R.

[1]  Md. Rafiqul Islam,et al.  Analysis of Rain Effects on Terrestrial Free Space Optics based on Data Measured in Tropical Climate , 2012 .

[2]  A. Maitra,et al.  Rain attenuation studies over an earth–space path at a tropical location , 2010 .

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

[4]  E. Leitgeb,et al.  Reliability of FSO links in next generation optical networks , 2005, Proceedings of 2005 7th International Conference Transparent Optical Networks, 2005..

[5]  J. Marshall,et al.  THE DISTRIBUTION OF RAINDROPS WITH SIZE , 1948 .

[6]  Nader Moayeri,et al.  Project IEEE 802.16 Broadband Wireless Access Working Group Title Power-Law Parameters of Rain Specific Attenuation , 1999 .

[7]  Carlo Capsoni,et al.  Extension of ITU-R Method for conversion of rain rate statistics from various integration times to one minute , 2008 .

[8]  Nazmus Saquib,et al.  Free space optical connectivity for last mile solution in Bangladesh , 2010, 2010 2nd International Conference on Education Technology and Computer.

[9]  M. Wittig,et al.  Analysis and evaluation of optimum wavelengths for free-space optical transceivers , 2010, 2010 12th International Conference on Transparent Optical Networks.

[10]  Robert K. Crane,et al.  ACTS propagation experiment: attenuation distribution observations and prediction model comparisons , 1997, Proc. IEEE.

[11]  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.

[12]  Comparison of the rain drop size distribution model in tropical region , 2004, 2004 RF and Microwave Conference (IEEE Cat. No.04EX924).

[13]  Theresa H. Carbonneau,et al.  Opportunities and challenges for optical wireless: the competitive advantage of free space telecommunications links in today's crowded marketplace , 1998, Other Conferences.

[14]  T. W. Harrold.  Attenuation of 8.6 mm-wavelength radiation in rain , 1967 .

[15]  Eric J. Korevaar,et al.  Understanding the performance of free-space optics [Invited] , 2003 .

[16]  John Sunday Ojo,et al.  Rain Rate and Rain Attenuation Prediction for Satellite Communication in Ku and Ka Bands Over Nigeria. , 2008 .

[17]  Maha Achour,et al.  Simulating atmospheric free-space optical propagation: rainfall attenuation , 2002, SPIE LASE.

[18]  Maha Achour,et al.  Simulating Atmospheric Free-Space Optical Propagation; Part II: Haze, Fog, and Low Clouds Attenuations , 2002, SPIE ITCom.

[19]  Zaid A. Shamsan,et al.  Potential interference and rain attenuation at 21.4–22 GHz downlink broadcasting satellite signals , 2011 .

[20]  S. Ishii,et al.  Rain Attenuation at Terahertz , 2010, Wirel. Eng. Technol..

[21]  G. Feldhake,et al.  Comparison of Multiple Rain Attenuation Models with Three Years of Ka Band Propagation Data Concurrently Taken at Eight Different Locations , 2002 .

[22]  Y. H. Lee,et al.  Conversion model of one-minute rainfall rate distribution in Singapore , 2009, 2009 IEEE Antennas and Propagation Society International Symposium.