Real Measurements and Evaluation of the Influence of Atmospheric Phenomena on FSO Combined with Modulation Formats

The influence of atmospheric environment is fundamental for Free-Space Optical link (FSO). The atmosphere can significantly degrade the communication quality of FSO up to so low received power/RSSI level that it can lead to the loss of communication. For this reason, authors used a professional weather station built on site of FSO link for measurement of real atmospheric conditions such as wind speed, temperature, relative air humidity, air pressure and solar radiation. Random changing of these atmosphere parameters creates atmospheric turbulences, absorption and dispersion centers. It is necessary to specify the value of refractive index structure parameter because it determines the influence of atmosphere on the FSO. The first part of this article includes the theoretical calculation of , there are used two models PAMELA and MacroscaleMeteorological model. The evaluation of the atmospheric influences and the RSSI value of received power level and also simulation of different types of modulation formats OOK-RZ, OOK-NRZ and BPSK in Optiwave is integral part of this article. 2 n C

[1]  Bobby Barua,et al.  Evaluate the performance of FSO communication link with different modulation technique under turbulent condition , 2011, 14th International Conference on Computer and Information Technology (ICCIT 2011).

[2]  Arnold Tunick,et al.  CN2 model to calculate the micrometeorological influences on the refractive index structure parameter , 2003, Environ. Model. Softw..

[3]  Radek Martinek,et al.  BER Measurement in Software Defined Radio Systems , 2013 .

[4]  Jia Li,et al.  Optical Communication Using Subcarrier PSK Intensity Modulation Through Atmospheric Turbulence Channels , 2007, IEEE Trans. Commun..

[5]  Jennifer C. Ricklin,et al.  Free-space laser communications : principles and advances , 2008 .

[6]  Sevia Mahdaliza Idrus,et al.  Optical Wireless Communications: IR for Wireless Connectivity , 2008 .

[7]  Sergey Bendersky,et al.  Atmospheric optical turbulence over land in middle east coastal environments: prediction modeling and measurements. , 2004, Applied optics.

[8]  Norman S. Kopeika,et al.  A System Engineering Approach to Imaging , 1998 .

[9]  Jan Vitasek,et al.  Design, Simulation and Testing of the OOK NRZ Modulation Format for Free Space Optic Communication in a Simulation Box , 2015 .

[10]  Zabih Ghassemlooy,et al.  BPSK Subcarrier Intensity Modulated Free-Space Optical Communications in Atmospheric Turbulence , 2009, Journal of Lightwave Technology.

[11]  Nathan Blaunstein,et al.  Applied Aspects of Optical Communication and LIDAR , 2009 .

[12]  Mark Z. Jacobson,et al.  Fundamentals of Atmospheric Modeling: Preface , 2005 .

[13]  Taissir Y. Elganimi.  Studying the BER performance, power- and bandwidth- efficiency for FSO communication systems under various modulation schemes , 2013, 2013 IEEE Jordan Conference on Applied Electrical Engineering and Computing Technologies (AEECT).

[14]  George K. Karagiannidis,et al.  Advanced Optical Wireless Communication Systems: Optical wireless communication theory , 2012 .

[15]  G. Charmaine Gilbreath,et al.  A comparison of optical turbulence models , 2004, SPIE Optics + Photonics.