| Popis: |
Free-space optical (FSO) communications provide high data rates, secure, license-free transmission and are immune to electromagnetic interference. However, the reliability of FSO link depends on given geographic location and atmospheric conditions. In this paper, FSO link availability is estimated for Visakhapatnam region using visibility data collected from IMD Visakhapatnam. Atmospheric attenuation is calculated by using Kim’s model. From the simulation results, it is observed that the atmospheric attenuation is as high as 30.26 dB/km, 22.77 dB/km and 20.24 dB/km for the transmission windows 850 nm, 1300 nm and 1550 nm, respectively. |
