Simulasi Kinerja Sistem Komunikasi Switching Hibrida FSO/RF Pada Jaringan

Purnomo, Achmad Rayhan (2026) Simulasi Kinerja Sistem Komunikasi Switching Hibrida FSO/RF Pada Jaringan. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Integrasi UAV ke jaringan komunikasi modern menuntut keandalan tinggi, namun tautan
FSO rentan terhadap cuaca sementara RF terbatas kapasitasnya. Tugas akhir ini mengevaluasi
sistem switching hibrida FSO/RF pada jaringan multi-hop UAV berbasis kondisi kanal:
mekanisme hard switching memilih tautan FSO atau RF tiap hop berdasarkan SNR sesaat
terhadap ambang tertentu. Kanal FSO dimodelkan Gamma-Gamma dan RF dengan Nakagami
m pada empat hop sepanjang 0,5 km, dihitung semi-analitik di MATLAB dan divalidasi
simulasi Monte Carlo. Skema hibrida konsisten mengungguli FSO-saja maupun RF-saja, mencapai BER 10⁻⁶ pada -15,7 dBm (clear air) dengan ambang optimum 10-14 dB, dan hanya tertinggal 1-2 dB dari selection combining (SC) ideal. Kontribusi utamanya adalah membuktikan bahwa switching berbasis ambang SNR per-hop memberikan keandalan mendekati kombinasi ideal dengan kompleksitas perangkat jauh lebih rendah, sehingga layak untuk platform UAV terbatas daya.
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The integration of UAVs into modern communication networks demands high reliability, yet FSO links are vulnerable to weather while RF links are limited in capacity. This final project evaluates a hybrid FSO/RF switching system for multi-hop UAV networks that operates based on channel conditions: a hard-switching mechanism selects the FSO or RF link at each hop according to the instantaneous FSO SNR relative to a given threshold. The FSO channel is modeled with the Gamma-Gamma distribution and the RF channel with Nakagami-m fading over four hops spanning 0.5 km, evaluated semi-analytically in MATLAB and validated through Monte Carlo simulation. The hybrid scheme consistently outperforms both FSO-only.
and RF-only links, achieving a BER of 10⁻⁶ at -15.7 dBm (clear air) with an optimal threshold
of 10-14 dB, and trailing the ideal selection combining (SC) bound by only 1-2 dB. Its main
contribution is demonstrating that per-hop SNR-threshold switching delivers reliability close to
the ideal combining scheme at substantially lower hardware complexity, making it suitable for
power-constrained UAV platforms.

Item Type: Thesis (Other)
Uncontrolled Keywords: Gamma-Gamma, Hard switching, Hibrida FSO/RF, Multi-hop UAV, Gamma-Gamma, Hard switching, Hybrid FSO/RF, Multi-hop UAV
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5101 Telecommunication
Divisions: Faculty of Intelligent Electrical and Informatics Technology (ELECTICS) > Electrical Engineering > 20201-(S1) Undergraduate Thesis
Depositing User: Achmad Rayhan Purnomo
Date Deposited: 24 Jul 2026 07:34
Last Modified: 24 Jul 2026 07:34
URI: http://repository.its.ac.id/id/eprint/137042

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