Parallel FSO-RF Transmissions for High-Throughput Remote Access with Satellite Communications

Ramy Samy, Hong-Chuan Yang, Tamer Rakia, Mohamed-Slim Alouini

Research output: Contribution to journalArticlepeer-review


Mixed usage of radio frequency (RF) and free space optical (FSO) transmissions can improve the reliability and throughput of future satellite communication (Satcom) systems. To overcome the rate limitation of conventional hybrid implementations, we propose parallel FSO and RF transmissions to explore their complementary properties in beamwidth and bandwidth. In particular, RF transmissions serve the users over a large geographical area, while the FSO link is employed to increase the throughput to a particular hot-spot area with higher capacity demand through an access point. Independent data streams are adaptively sent over both links to satisfy capacity and availability requirements. To highlight the significant potential of parallel FSO-RF transmissions, we analytically derive the sum capacity outage probability. The obtained expression is validated by Monte Carlo simulations. Furthermore, we derive an asymptotic expression to obtain diversity gain and to provide further insights into the behavior of the proposed system. The presented results demonstrate the potential of parallel FSO and RF Satcom over existing solutions.
Original languageEnglish (US)
Pages (from-to)1-10
Number of pages10
JournalIEEE Transactions on Aerospace and Electronic Systems
StatePublished - Sep 26 2023

Bibliographical note

KAUST Repository Item: Exported on 2023-09-29

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Aerospace Engineering


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