Title :
Terrestrial free space line of sight optical communication (TFSLSOC) using adaptive control steering system with laser beam Tracking, Aligning and Positioning (ATP)
Author :
Raj, A. Arockia Bazil ; Selvi, J. Arputha Vijaya ; Raghavan, S.
Author_Institution :
ECE, Kings Coll. of Eng., Thanjavur, India
Abstract :
Free space optical communication (FSOC) is the most promising approach for addressing the emerging broadband access network. Quick link setup, high transmission security, large bandwidth and light weight are some of the important features of this system. However, the laser power attenuation due to adverse weather conditions and scattering due to turbulence are to be mitigated. In this paper, a position sensing detector (PSD) and stochastic parallel gradient descent algorithm (SPGDA) based control system using field programmable gate array (FPGA) in a closed loop control configuration (CLCC) are developed and presented for aligning, tracking and positioning (ATP) the laser beam to improve the performance of the FSOC.
Keywords :
adaptive control; broadband networks; closed loop systems; field programmable gate arrays; laser beam applications; optical communication; optical links; FPGA; adaptive control steering; broadband access network; closed loop control configuration; field programmable gate array; laser beam aligning; laser beam positioning; laser beam tracking; laser power attenuation; line of sight optical communication; position sensing detector; stochastic parallel gradient descent algorithm; terrestrial free space optical communication; transmission security; Adaptive control; Bandwidth; Communication system security; Control systems; Field programmable gate arrays; Laser beams; Optical control; Optical fiber communication; Power system security; Steering systems; Free Space Optical Communication; Laser Beam Aligning; Tracking and Positioning;
Conference_Titel :
Wireless Communication and Sensor Computing, 2010. ICWCSC 2010. International Conference on
Conference_Location :
Chennai
Print_ISBN :
978-1-4244-5136-4
Electronic_ISBN :
978-1-4244-5137-1
DOI :
10.1109/ICWCSC.2010.5415900
