title: Average capacity optimization in free-space optical communication system over atmospheric turbulence channels with pointing errors.
abstract: A model is proposed to study the average capacity optimization in free-space optical (FSO) channels, accounting for effects of atmospheric turbulence and pointing errors. For a given transmitter laser power, it is shown that both transmitter beam divergence angle and beam waist can be tuned to maximize the average capacity. Meanwhile, their optimum values strongly depend on the jitter and operation wavelength. These results can be helpful for designing FSO communication systems.
authors.affiliation: Department of Electronic and Information Engineering, Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen, Guangdong 518055, China.
authors.forename: Chao
authors.initials: C
authors.lastname: Liu
authors.forename: Yong
authors.initials: Y
authors.lastname: Yao
authors.forename: Yun Xu
authors.initials: YX
authors.lastname: Sun
authors.forename: Jun Jun
authors.initials: JJ
authors.lastname: Xiao
authors.forename: Xin Hui
authors.initials: XH
authors.lastname: Zhao