title: Influence of beam wander on uplink of ground-to-satellite laser communication and optimization for transmitter beam radius.
abstract: We restudy the influence of beam wander on the uplink of ground-to-satellite laser communication, using the effective pointing error method, for a collimated untracked Gaussian beam under a weak atmospheric turbulence condition. It shows that the beam wander may cause significant increase in bit error rate (BER), and there exists an optimal transmitter radius for minimizing the value of BER. Further studies manifest that this optimal radius only changes with the laser wavelength and zenith angle, while independent on the satellite altitude and the fade threshold at the receiver. These results can be used in system design and optimization for the transmitter.
authors.affiliation: CREAM Group, State Key Laboratory of Advanced Optical Communication Systems and Networks and Institute of Quantum Electronics, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China. hongguo@pku.edu.cn
authors.forename: Hong
authors.initials: H
authors.lastname: Guo
authors.forename: Bin
authors.initials: B
authors.lastname: Luo
authors.forename: Yongxiong
authors.initials: Y
authors.lastname: Ren
authors.forename: Sinan
authors.initials: S
authors.lastname: Zhao
authors.forename: Anhong
authors.initials: A
authors.lastname: Dang