Open AccessImpact of pointing error on SISO/MISO drones swarm-based free space optical system in weak turbulence regime
Author(s) -
Abdullah Jameel Mahdi,
Wamidh Jalil Mazher,
Osman N. Uçan
Publication year - 2021
Publication title -
indonesian journal of electrical engineering and computer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.241
H-Index - 17
eISSN - 2502-4760
pISSN - 2502-4752
DOI - 10.11591/ijeecs.v23.i2.pp918-926
Subject(s) - physics , bit error rate , channel (broadcasting) , computer science , telecommunications
Applying the drone-based free space optical (FSO) technology is recent in communication systems. The FSO technology hashigh-security features dueto narrow beamwidth, insusceptible to interferences, free license and landline connection is not appropriate. However, these advantages face many obstacles that affect the system's performance, such as random weather conditions and misalignment. The pointing error Hpis one of the critical factors of the channel gain H. The related parameters of the Hp factor: the pointing error angles θr and the path length Z, were manipulated to extract the applicable values at various receiver diameter values. The proposed system has two topologies: single input single output (SISO) and multiple input single output (MISO), flying in weak atmospheric turbulence. The simulation was done using MATLAB software 2020. The average bit error rate (ABER) for the system versus signal-to-noise ratio (SNR) were verified and analyzed. The results showed that at θr=10 −3 rad, Z increased in the range 10~100m for each one-centimeter increase of DR. At θr=10 −2 rad, the applicable Z was nearly 10% of the link distance Z when θr=10 −3 rad was applied. Consequently, an increase in θr must correspond decrease in Z and vice versa to maintain the system at high performance.