Dual-Channel OOK (D-COOK) Modulation for UAV-Assisted Mixed THz/VLC Systems

Hanojhan Rajahrajasingh; Dushantha Nalin K. Jayakody; P. Muthuchidambaranathan; Theodoros A. Tsiftsis

doi:10.1109/ICCWorkshops67674.2025.11162485

Dual-Channel OOK (D-COOK) Modulation for UAV-Assisted Mixed THz/VLC Systems

Hanojhan Rajahrajasingh^*
, Dushantha Nalin K. Jayakody
, P. Muthuchidambaranathan
, Theodoros A. Tsiftsis

^*Corresponding author for this work

Research output: Chapter in Book/Conference proceeding › Conference contribution › peer-review

Abstract

This paper investigates a dual-hop UAV-assisted communications system that integrates Terahertz (THz) and Visible Light Communication (VLC) over a decode-and-forward (DF) relay that bridges the THz and VLC segments. The VLC channel is modelled to account for additive background noise and deterministic fading, while the THz link is subject to path loss, absorption loss, and pointing errors. A comparative analysis with Free Space Optics (FSO)-VLC and Radio Frequency (RF)-VLC systems highlights the superior performance of the THz-VLC system, especially at high signal-to-noise ratios (SNR), in terms of BER and outage probability. Furthermore, a novel modulation technique is proposed that enables increased data rates. Performance evaluation of the proposed modulation scheme further validates the effectiveness of the system.

Original language	English
Title of host publication	2025 IEEE International Conference on Communications Workshops, ICC Workshops 2025
Editors	Matthew Valenti, David Reed, Melissa Torres
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	1305-1310
Number of pages	6
ISBN (Electronic)	9798331596248
DOIs	https://doi.org/10.1109/ICCWorkshops67674.2025.11162485
Publication status	Published - 2025
Externally published	Yes
Event	2025 IEEE International Conference on Communications Workshops, ICC Workshops 2025 - Montreal, Canada Duration: 8 Jun 2025 → 12 Jun 2025

Publication series

Name	2025 IEEE International Conference on Communications Workshops, ICC Workshops 2025

Conference

Conference	2025 IEEE International Conference on Communications Workshops, ICC Workshops 2025
Country/Territory	Canada
City	Montreal
Period	8/06/25 → 12/06/25

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Free Keywords

DF Relay
Modulation
THz
UAV
VLC

ASJC Scopus subject areas

Artificial Intelligence
Computer Networks and Communications
Computer Science Applications
Signal Processing
Information Systems and Management
Renewable Energy, Sustainability and the Environment

Access to Document

10.1109/ICCWorkshops67674.2025.11162485

Cite this

Rajahrajasingh, H., Jayakody, D. N. K., Muthuchidambaranathan, P., & Tsiftsis, T. A. (2025). Dual-Channel OOK (D-COOK) Modulation for UAV-Assisted Mixed THz/VLC Systems. In M. Valenti, D. Reed, & M. Torres (Eds.), 2025 IEEE International Conference on Communications Workshops, ICC Workshops 2025 (pp. 1305-1310). (2025 IEEE International Conference on Communications Workshops, ICC Workshops 2025). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICCWorkshops67674.2025.11162485

Rajahrajasingh, Hanojhan ; Jayakody, Dushantha Nalin K. ; Muthuchidambaranathan, P. et al. / Dual-Channel OOK (D-COOK) Modulation for UAV-Assisted Mixed THz/VLC Systems. 2025 IEEE International Conference on Communications Workshops, ICC Workshops 2025. editor / Matthew Valenti ; David Reed ; Melissa Torres. Institute of Electrical and Electronics Engineers Inc., 2025. pp. 1305-1310 (2025 IEEE International Conference on Communications Workshops, ICC Workshops 2025).

@inproceedings{62e39a87b6e74c12bfb7cd790db32933,

title = "Dual-Channel OOK (D-COOK) Modulation for UAV-Assisted Mixed THz/VLC Systems",

abstract = "This paper investigates a dual-hop UAV-assisted communications system that integrates Terahertz (THz) and Visible Light Communication (VLC) over a decode-and-forward (DF) relay that bridges the THz and VLC segments. The VLC channel is modelled to account for additive background noise and deterministic fading, while the THz link is subject to path loss, absorption loss, and pointing errors. A comparative analysis with Free Space Optics (FSO)-VLC and Radio Frequency (RF)-VLC systems highlights the superior performance of the THz-VLC system, especially at high signal-to-noise ratios (SNR), in terms of BER and outage probability. Furthermore, a novel modulation technique is proposed that enables increased data rates. Performance evaluation of the proposed modulation scheme further validates the effectiveness of the system.",

keywords = "DF Relay, Modulation, THz, UAV, VLC",

author = "Hanojhan Rajahrajasingh and Jayakody, \{Dushantha Nalin K.\} and P. Muthuchidambaranathan and Tsiftsis, \{Theodoros A.\}",

note = "Publisher Copyright: {\textcopyright} 2025 IEEE.; 2025 IEEE International Conference on Communications Workshops, ICC Workshops 2025 ; Conference date: 08-06-2025 Through 12-06-2025",

year = "2025",

doi = "10.1109/ICCWorkshops67674.2025.11162485",

language = "English",

series = "2025 IEEE International Conference on Communications Workshops, ICC Workshops 2025",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

pages = "1305--1310",

editor = "Matthew Valenti and David Reed and Melissa Torres",

booktitle = "2025 IEEE International Conference on Communications Workshops, ICC Workshops 2025",

address = "United States",

}

Rajahrajasingh, H, Jayakody, DNK, Muthuchidambaranathan, P & Tsiftsis, TA 2025, Dual-Channel OOK (D-COOK) Modulation for UAV-Assisted Mixed THz/VLC Systems. in M Valenti, D Reed & M Torres (eds), 2025 IEEE International Conference on Communications Workshops, ICC Workshops 2025. 2025 IEEE International Conference on Communications Workshops, ICC Workshops 2025, Institute of Electrical and Electronics Engineers Inc., pp. 1305-1310, 2025 IEEE International Conference on Communications Workshops, ICC Workshops 2025, Montreal, Canada, 8/06/25. https://doi.org/10.1109/ICCWorkshops67674.2025.11162485

Dual-Channel OOK (D-COOK) Modulation for UAV-Assisted Mixed THz/VLC Systems. / Rajahrajasingh, Hanojhan; Jayakody, Dushantha Nalin K.; Muthuchidambaranathan, P. et al.
2025 IEEE International Conference on Communications Workshops, ICC Workshops 2025. ed. / Matthew Valenti; David Reed; Melissa Torres. Institute of Electrical and Electronics Engineers Inc., 2025. p. 1305-1310 (2025 IEEE International Conference on Communications Workshops, ICC Workshops 2025).

Research output: Chapter in Book/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Dual-Channel OOK (D-COOK) Modulation for UAV-Assisted Mixed THz/VLC Systems

AU - Rajahrajasingh, Hanojhan

AU - Jayakody, Dushantha Nalin K.

AU - Muthuchidambaranathan, P.

AU - Tsiftsis, Theodoros A.

PY - 2025

Y1 - 2025

N2 - This paper investigates a dual-hop UAV-assisted communications system that integrates Terahertz (THz) and Visible Light Communication (VLC) over a decode-and-forward (DF) relay that bridges the THz and VLC segments. The VLC channel is modelled to account for additive background noise and deterministic fading, while the THz link is subject to path loss, absorption loss, and pointing errors. A comparative analysis with Free Space Optics (FSO)-VLC and Radio Frequency (RF)-VLC systems highlights the superior performance of the THz-VLC system, especially at high signal-to-noise ratios (SNR), in terms of BER and outage probability. Furthermore, a novel modulation technique is proposed that enables increased data rates. Performance evaluation of the proposed modulation scheme further validates the effectiveness of the system.

AB - This paper investigates a dual-hop UAV-assisted communications system that integrates Terahertz (THz) and Visible Light Communication (VLC) over a decode-and-forward (DF) relay that bridges the THz and VLC segments. The VLC channel is modelled to account for additive background noise and deterministic fading, while the THz link is subject to path loss, absorption loss, and pointing errors. A comparative analysis with Free Space Optics (FSO)-VLC and Radio Frequency (RF)-VLC systems highlights the superior performance of the THz-VLC system, especially at high signal-to-noise ratios (SNR), in terms of BER and outage probability. Furthermore, a novel modulation technique is proposed that enables increased data rates. Performance evaluation of the proposed modulation scheme further validates the effectiveness of the system.

KW - DF Relay

KW - Modulation

KW - THz

KW - UAV

KW - VLC

UR - https://www.scopus.com/pages/publications/105018097563

U2 - 10.1109/ICCWorkshops67674.2025.11162485

DO - 10.1109/ICCWorkshops67674.2025.11162485

M3 - Conference contribution

AN - SCOPUS:105018097563

T3 - 2025 IEEE International Conference on Communications Workshops, ICC Workshops 2025

SP - 1305

EP - 1310

BT - 2025 IEEE International Conference on Communications Workshops, ICC Workshops 2025

A2 - Valenti, Matthew

A2 - Reed, David

A2 - Torres, Melissa

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 2025 IEEE International Conference on Communications Workshops, ICC Workshops 2025

Y2 - 8 June 2025 through 12 June 2025

ER -

Rajahrajasingh H, Jayakody DNK, Muthuchidambaranathan P, Tsiftsis TA. Dual-Channel OOK (D-COOK) Modulation for UAV-Assisted Mixed THz/VLC Systems. In Valenti M, Reed D, Torres M, editors, 2025 IEEE International Conference on Communications Workshops, ICC Workshops 2025. Institute of Electrical and Electronics Engineers Inc. 2025. p. 1305-1310. (2025 IEEE International Conference on Communications Workshops, ICC Workshops 2025). doi: 10.1109/ICCWorkshops67674.2025.11162485

Dual-Channel OOK (D-COOK) Modulation for UAV-Assisted Mixed THz/VLC Systems

Abstract

Publication series

Conference

UN SDGs

Free Keywords

ASJC Scopus subject areas

Access to Document

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