Ergodic Capacity Optimization of FSO Systems over Gamma-Gamma Atmospheric Turbulence Channels with Generalized Pointing Errors Conference Paper uri icon


  • © 2018 IEEE. A novel approximate closed-form expression for the ergodic capacity of free-space optical (FSO) communication links over gamma-gamma (GG) atmospheric turbulence channels with generalized pointing errors is presented. The obtained expression is entirely valid from low to high signal-to-noise-ratio (SNR). It is concluded that despite generalized pointing errors cannot be ignored in capacity performance; they can be considerably mitigated by selecting an optimum beam width at the transmitter-side. In other words, there is an optimum normalized beam width value that minimizes the effect of pointing errors on capacity performance at high SNR that does not depend on atmospheric turbulence.

author list (cited authors)

  • Boluda-Ruiz, R., García-Zambrana, A., Castillo-Vázquez, B., Castillo-Vázquez, C., Gao, Q., & Qaraqe, K.

citation count

  • 3

publication date

  • July 2018