RT Journal Article
T1 Adaptive selective relaying in cooperative free-space optical systems over atmospheric turbulence and misalignment fading channels
A1 Boluda-Ruiz, Rubén
A1 García-Zambrana, Antonio
A1 Castillo-Vázquez, Beatriz
A1 Castillo-Vázquez, Carmen
K1 Comunicaciones ópticas
K1 Turbulencia atmosférica
AB In this paper, a novel adaptive cooperative protocol with multiple relays using detect-and-forward (DF) over atmospheric turbulence channels with pointing errors is proposed. The adaptive DF cooperative protocol here analyzed is based on the selection of the optical path, source-destination or different source-relay links, with a greater value of fading gain or irradiance, maintaining a high diversity order. Closed-form asymptotic bit error-rate (BER) expressions are obtained for a cooperative free space optical (FSO) communication system with Nr relays, when the irradiance of the transmitted optical beam is susceptible to either a wide range of turbulence conditions, following a gamma-gamma distribution of parameters α and β , or pointing errors, following a misalignment fading model where the effect of beam width, detector size and jitter variance is considered. A greater robustness for different link distances and pointing errors is corroborated by the obtained results if compared with similar cooperative schemes or equivalent multiple-input multiple-output (MIMO) systems. Simulation results are further demonstrated to confirm the accuracy and usefulness of the derived results.
PB Optica Publishing Group
YR 2014
FD 2014
LK https://hdl.handle.net/10630/32920
UL https://hdl.handle.net/10630/32920
LA eng
NO Rubén Boluda-Ruiz, Antonio García-Zambrana, Carmen Castillo-Vázquez, and Beatriz Castillo-Vázquez, "Adaptive selective relaying in cooperative free-space optical systems over atmospheric turbulence and misalignment fading channels," Opt. Express 22, 16629-16644 (2014) https://doi.org/10.1364/OE.22.016629
NO 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 20 ene 2026