scholarly journals Channel Modeling and Parameter Optimization for Hovering UAV-Based Free-Space Optical Links

2018 ◽  
Vol 36 (9) ◽  
pp. 2104-2113 ◽  
Author(s):  
Mohammad Taghi Dabiri ◽  
Seyed Mohammad Sajad Sadough ◽  
Mohammad Ali Khalighi
Keyword(s):  
Parameter Optimization ◽  
Free Space ◽  
Channel Modeling ◽  
Free Space Optical ◽  
Optical Links

An investigation of 16-QAM signal transmission over turbulent RoFSO link modeled by gamma–gamma distribution

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Abhishek Tripathi ◽  
Shilpi Gupta ◽  
Abhilash Mandloi ◽  
Gireesh G Soni
Keyword(s):  
Gamma Distribution ◽  
Free Space ◽  
Signal Transmission ◽  
Channel Modeling ◽  
Symbol Error Rate ◽  
Average Error ◽  
60 Ghz ◽  
Free Space Optical ◽  
Error Vector Magnitude ◽  
Space Optical Communication

AbstractThis paper outlines the performance of a 10 Gbit/s rectangular 16-quadrature amplitude modulation–based radio over free space optical communication system. Here, 60 GHz radio frequency–modulated signal is propagated through a 1550-nm free space optical link. The gamma–gamma distribution is used for the channel modeling of weak to strong atmospheric turbulence. The reported constellation plots and eye patterns are attributed to impairment factors in adverse conditions of atmosphere. The evaluation is carried out that the variation in average error vector magnitude in the range of 1.45–1.63% and equivalent symbol error rate of 0.019–0.023 are obtained for a clear atmosphere compared to the turbulent link of 0.2–1 km, respectively.

Cloud attenuations for free-space optical links

2009 ◽  
Author(s):  
M. S. Awan ◽  
Marzuki ◽  
E. Leitgeb ◽  
B. Hillbrand ◽  
F. Nadeem ◽  
...  
Keyword(s):  
Free Space ◽  
Free Space Optical ◽  
Optical Links
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