HAPS-assisted Hybrid RF-FSO Multicast Communications: Error and Outage Analysis

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BenYahia O., Erdogan E., Kurt G. K.

IEEE Transactions on Aerospace and Electronic Systems, vol.59, no.1, pp.140-152, 2023 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 59 Issue: 1
  • Publication Date: 2023
  • Doi Number: 10.1109/taes.2022.3186296
  • Journal Name: IEEE Transactions on Aerospace and Electronic Systems
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Applied Science & Technology Source, Business Source Elite, Business Source Premier, Communication Abstracts, Compendex, Computer & Applied Sciences, INSPEC, Metadex, Civil Engineering Abstracts
  • Page Numbers: pp.140-152
  • Keywords: Radio frequency, Signal to noise ratio, Satellite broadcasting, Attenuation, Low earth orbit satellites, Optical transmitters, Optical beams, High altitude platform station (HAPS), multicast transmission, outage probability (OP), stratospheric attenuation
  • Istanbul Technical University Affiliated: Yes


IEEEIn this work, we study the performance of multiple-hop mixed radio frequency (RF)/free-space optical (FSO) communication-based decode-and-forward protocol for multicast networks. So far, serving a large number of users is considered a promising approach for real-time applications to address the massive data traffic demands. In this regard, we propose two practical use cases. In the former model, we propose a high altitude platform station (HAPS)-aided mixed RF/FSO/RF communication scheme where a terrestrial ground station intends to communicate with a cluster of nodes through two stratospheric HAPS systems. In the latter model, we assume that the line of sight connectivity is inaccessible between the two HAPS systems due to high attenuation caused by large propagation distances. Thereby, we propose a low Earth orbit satellite-aided mixed RF/FSO/FSO/RF communication. For the proposed scenarios, closed-form expressions of outage probability (OP) and bit error rate are derived. In addition, to illustrate the asymptotic behavior of the proposed models, diversity gains are obtained. Furthermore, ergodic capacity and energy efficiency (EE) are provided for both scenarios. Finally, the simulation results are provided to validate the theoretical derivations. The results show that satellite-aided mixed RF/FSO/FSO/RF scenario achieve better OP, whereas HAPS-aided mixed RF/FSO/RF scenario can achieve higher EE.