Rate-adaptive selective relaying using time diversity for relay-assisted FSO communications

Ruben-Boluda-Ruiz, Antonio García-Zambrana, Beatriz del Castillo-Vázquez, Carmen Castillo-Vazquez
January 2016
Cite DOI URL

Abstract

In this paper, a novel cooperative protocol for free-space optical (FSO) communication systems is proposed, wherein the performance analysis is evaluated over gamma-gamma (GG) fading channels with pointing errors. This novel relaying scheme is based on the optical path selection, source-destination (S-D) or source-relay-destination (S-R-D), with a greater value of fading gain or irradiance together with the use of repetition coding (RC), exploiting the potential time-diversity order available in the turbulent channel in order to maintain a high diversity order. A novel closed-form asymptotic bit-error rate (BER) expression is derived for a 3-way cooperative FSO system. A greater diversity gain with one only relay is corroborated by the obtained results if compared with cooperative FSO schemes of similar complexity at the expense of an information rate-reduction (RR). © 2015 IEEE.

Type
Conference paper
Publication
2015 IEEE Global Conference on Signal and Information Processing, GlobalSIP 2015
Adaptive Optics Cooperative Communication Fading Channels Information Science Optical Communication Cooperative Protocols Free Space Optical Communication Systems FSO Communications Information Rates Performance Analysis Relaying Schemes Repetition Coding Turbulent Channels Bit-Error Rate
Antonio García-Zambrana
Antonio García-Zambrana
Professor of Telecommunications Engineering

Professor at the University of Málaga working on wireless optical communications, free-space optical links, underwater optical wireless communications, visible light communications, and FPGA/RFSoC-based real-time prototyping.

Beatriz del Castillo-Vázquez
Beatriz del Castillo-Vázquez
Associate Professor of Telecommunications Engineering

Associate Professor at the University of Málaga working on wireless optical communications, free-space optical links, underwater optical wireless communications, optical channel modelling and system-level performance analysis.