International Conference on Recent Advances and Future Trends in Information Technology (iRAFIT 2012) |
Foundation of Computer Science USA |
IRAFIT - Number 7 |
April 2012 |
Authors: Ajaybeer Kaur, M. L. Singh |
5c6dc2ba-95f9-4160-8fe2-0957f344d5a4 |
Ajaybeer Kaur, M. L. Singh . Performance Evaluation of Free Space Optics (FSO) and Radio Frequency Communication System Due to Combined Effect of Fog and Snow. International Conference on Recent Advances and Future Trends in Information Technology (iRAFIT 2012). IRAFIT, 7 (April 2012), 32-36.
Free space optics provides high data rate by allowing transmission of signal through atmosphere. The free space optics is also effected by different weather conditions. The atmospheric attenuation is caused by two main factors i.e. Absorption and Scattering. Fog, rain, snow and cloud causes the scattering of optical signals transmitted in free space. Fog is the most critical attenuating factor. The Snow Attenuation is also more severe than the Rain Attenuation due to large droplet size of snow. The hybrid FSO/RF system is considered for providing high availability. Frequencies in GHz range can improve the availability and it is selected as a back-up link. In this paper the effect of fog and snow on the performance of FSO and RF system is evaluated.