Title :
Pointing error evaluation in FSO link
Author :
Singh, Sushil ; Soni, Gaurav
Author_Institution :
Amritsar Coll. of Eng. & Technol., Amritsar, India
Abstract :
Pointing error results from misalignment between transmitter and receiver or turbulence. In long FSO links range pointing error and attenuation can results in increased BER and link failure. A small change in pointing error can cause high power losses. To overcome this problem system techniques like auto tracking, narrow and high power transmitted beams, highly sensitive receivers, monitoring of weather conditions should be adopted. In this paper maximum pointing error is calculated for proposed FSO link to achieve BER less than 10-9. Link is optimized for weak and normal turbulent channel with attenuation ranging between 4dB/km and 56dB/km.
Keywords :
atmospheric light propagation; atmospheric turbulence; error statistics; optical links; FSO link; atmospheric turbulence; autotracking technique; bit error rate; free space optical links; link failure; pointing error evaluation; range pointing error; signal attenuation; transmitter-receiver misalignment; Attenuation; BER; Divergence Angle; FSO; Pointing error; Q-Factor; WOC;
Conference_Titel :
Communication and Computing (ARTCom 2013), Fifth International Conference on Advances in Recent Technologies in
Conference_Location :
Bangalore
Print_ISBN :
978-1-84919-842-4
DOI :
10.1049/cp.2013.2215
