RT Conference Proceedings
T1 Evaluating pointing errors on ergodic capacity of DF relay-assisted FSO communication systems
A1 Boluda-Ruiz, Rubén
A1 García-Zambrana, Antonio
A1 Castillo-Vázquez, Beatriz
A1 Castillo-Vázquez, Carmen
K1 Comunicación óptica
AB Ergodic capacity of decode-and-forward (DF) relay-assisted free-space optical (FSO) communication systems when line of sight is available is analyzed over gamma-gamma fading channels with pointing errors. Novel closed-form approximate ergodic capacity expression is obtained in terms of the H-Fox function for a 3-way FSO communication system when the α-μ distribution to efficiently approximate the probability densityfunction (PDF) of the sum of gamma-gamma with pointing errors variates is considered. Moreover, we present a novel asymptotic expression at high signal-to-noise ratio (SNR) for the ergodic capacity of DF relay-assisted FSO systems. The main contributionin this work lies in an in-depth analysis about the impact of pointing errors on the ergodic capacity for cooperative FSO systems. In order to maintain the same performance in terms of capacity, it is corroborated that the presence of pointing errorsrequires an increase in SNR, which is related to the fraction of the collected power at the receive aperture, i.e. A 0 . Simulation results are further demonstrated to confirm the accuracy and usefulness of the derived results.
YR 2015
FD 2015-09-15
LK http://hdl.handle.net/10630/10256
UL http://hdl.handle.net/10630/10256
LA eng
NO Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech. The authors wish to acknowledge the financial support given by Spanish MINECO Project TEC2012-32606.
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 21 ene 2026