Abstract
This paper addresses the impacts of biasing and clipping on free-space optical (FSO) communications system over weak turbulence channel employing direct current biased optical orthogonal frequency division multiplexing (DCO-OFDM). With atmospheric attenuation, turbulence and pointing errors, we present a statistical model for the optical intensity fluctuation at the receiver. The average bit error rate (BER) performance is analyzed in the channel environment and a theoretical expression is obtained. The simulation results indicate that the impacts of biasing and clipping for the average BER performance of the DCO-OFDM FSO communications system can be alleviated by enlarging the value of the bias to a certain degree, and the derived theoretical expression matches with the simulation results.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
