Kazemi, Hossein; Sarbazi, Elham; Crisp, Michael; El-Gorashi, Taisir E. H.; Elmirghani, Jaafar M. H.; Penty, Richard V.; White, Ian H.; Safari, Majid; Haas, Harald
A Novel Terabit Grid-of-Beam Optical Wireless Multi-User Access Network With Beam Clustering Journal Article
In: IEEE Transactions on Communications, vol. 73, no. 10, pp. 9152–9167, 2025, ISSN: 0090-6778, 1558-0857.
Links | BibTeX | Tags: LRDC, Network management and orchestration, Optical wireless communication, Vertical cavity surface emitting lasers
@article{kazemi_novel_2025,
title = {A Novel Terabit Grid-of-Beam Optical Wireless Multi-User Access Network With Beam Clustering},
author = {Hossein Kazemi and Elham Sarbazi and Michael Crisp and Taisir E. H. El-Gorashi and Jaafar M. H. Elmirghani and Richard V. Penty and Ian H. White and Majid Safari and Harald Haas},
url = {https://ieeexplore.ieee.org/document/10949139/},
doi = {10.1109/TCOMM.2025.3558045},
issn = {0090-6778, 1558-0857},
year = {2025},
date = {2025-10-01},
urldate = {2026-02-03},
journal = {IEEE Transactions on Communications},
volume = {73},
number = {10},
pages = {9152–9167},
keywords = {LRDC, Network management and orchestration, Optical wireless communication, Vertical cavity surface emitting lasers},
pubstate = {published},
tppubtype = {article}
}
Huang, Yifan; Liu, Yi; Liu, Wenjie; Papadimitratos, Panos; Haas, Harald; Tavakkolnia, Iman
Interference-Resilient Optical Wireless Positioning via Machine Learning-Enhanced Subset Filtering Proceedings Article
In: 2025.
BibTeX | Tags: LRDC, machine learning, Optical wireless communication
@inproceedings{huang_interference-resilient_2025,
title = {Interference-Resilient Optical Wireless Positioning via Machine Learning-Enhanced Subset Filtering},
author = {Yifan Huang and Yi Liu and Wenjie Liu and Panos Papadimitratos and Harald Haas and Iman Tavakkolnia},
year = {2025},
date = {2025-09-01},
keywords = {LRDC, machine learning, Optical wireless communication},
pubstate = {published},
tppubtype = {inproceedings}
}
Ahmad, Rizwana; Nieminen, Arttu; Osahon, Isaac N. O.; Caglayan, Humeyra; Haas, Harald
Experimental Demonstration of 75 Gbps OAM Multiplexing System Using 1310 nm VCSEL Transmitter Proceedings Article
In: 2025 European Conference on Optical Communications (ECOC), pp. 1–4, IEEE, Copenhagen, Denmark, 2025, ISBN: 9798331595319.
Links | BibTeX | Tags: LRDC, Optical wireless communication, Vertical cavity surface emitting lasers
@inproceedings{ahmad_experimental_2025,
title = {Experimental Demonstration of 75 Gbps OAM Multiplexing System Using 1310 nm VCSEL Transmitter},
author = {Rizwana Ahmad and Arttu Nieminen and Isaac N. O. Osahon and Humeyra Caglayan and Harald Haas},
url = {https://ieeexplore.ieee.org/document/11263377/},
doi = {10.1109/ECOC66593.2025.11263377},
isbn = {9798331595319},
year = {2025},
date = {2025-09-01},
urldate = {2026-02-03},
booktitle = {2025 European Conference on Optical Communications (ECOC)},
pages = {1–4},
publisher = {IEEE},
address = {Copenhagen, Denmark},
keywords = {LRDC, Optical wireless communication, Vertical cavity surface emitting lasers},
pubstate = {published},
tppubtype = {inproceedings}
}
Safi, Hossein; Dabiri, Mohammad Taghi; Babadi, Sina; Tavakkolnia, Iman; Haas, Harald
3D Coverage Performance of VCSEL Arrays in Indoor OWC Systems for 6G Applications Proceedings Article
In: IEEE INFOCOM 2025 - IEEE Conference on Computer Communications Workshops (INFOCOM WKSHPS), pp. 1–6, IEEE, London, United Kingdom, 2025, ISBN: 9798331543709.
Links | BibTeX | Tags: 6G, LRDC, Network management and orchestration, Optical wireless communication, Vertical cavity surface emitting lasers
@inproceedings{safi_3d_2025,
title = {3D Coverage Performance of VCSEL Arrays in Indoor OWC Systems for 6G Applications},
author = {Hossein Safi and Mohammad Taghi Dabiri and Sina Babadi and Iman Tavakkolnia and Harald Haas},
url = {https://ieeexplore.ieee.org/document/11152841/},
doi = {10.1109/INFOCOMWKSHPS65812.2025.11152841},
isbn = {9798331543709},
year = {2025},
date = {2025-05-01},
urldate = {2026-02-05},
booktitle = {IEEE INFOCOM 2025 - IEEE Conference on Computer Communications Workshops (INFOCOM WKSHPS)},
pages = {1–6},
publisher = {IEEE},
address = {London, United Kingdom},
keywords = {6G, LRDC, Network management and orchestration, Optical wireless communication, Vertical cavity surface emitting lasers},
pubstate = {published},
tppubtype = {inproceedings}
}
Qidan, Ahmad Adnan; Alazwary, Khulood; El-Gorashi, Taisir; Safari, Majid; Haas, Harald; Penty, Richard V.; White, Ian H.; Elmirghani, Jaafar M. H.
BIA Transmission in Rate Splitting-based Optical Wireless Networks Journal Article
In: IEEE Transactions on Communications, pp. 1–1, 2025, ISSN: 0090-6778, 1558-0857.
Links | BibTeX | Tags: LRDC, Optical wireless communication, Rate splitting, Vertical cavity surface emitting lasers
@article{qidan_bia_2025,
title = {BIA Transmission in Rate Splitting-based Optical Wireless Networks},
author = {Ahmad Adnan Qidan and Khulood Alazwary and Taisir El-Gorashi and Majid Safari and Harald Haas and Richard V. Penty and Ian H. White and Jaafar M. H. Elmirghani},
url = {https://ieeexplore.ieee.org/document/11164782/},
doi = {10.1109/TCOMM.2025.3610166},
issn = {0090-6778, 1558-0857},
year = {2025},
date = {2025-01-01},
urldate = {2025-10-17},
journal = {IEEE Transactions on Communications},
pages = {1–1},
keywords = {LRDC, Optical wireless communication, Rate splitting, Vertical cavity surface emitting lasers},
pubstate = {published},
tppubtype = {article}
}
Liu, Mingqing; Kazemi, Hossein; Safari, Majid; Tavakkolnia, Iman; Haas, Harald
Energy Efficiency Comparison of THz and VCSEL-Based OWC for 6G Miscellaneous
2024.
Abstract | Links | BibTeX | Tags: 6G, Energy Efficiency, LRDC, Optical wireless communication, Vertical cavity surface emitting lasers
@misc{liu_energy_2024,
title = {Energy Efficiency Comparison of THz and VCSEL-Based OWC for 6G},
author = {Mingqing Liu and Hossein Kazemi and Majid Safari and Iman Tavakkolnia and Harald Haas},
url = {https://www.repository.cam.ac.uk/handle/1810/375123},
doi = {10.17863/CAM.112916},
year = {2024},
date = {2024-10-01},
urldate = {2024-10-30},
publisher = {Apollo - University of Cambridge Repository},
abstract = {Both optical wireless communications (OWC) and Terahertz (THz) communication systems are regarded as enablers for the 6th-generation (6G) networks. Facing the 6G requirements of ultra-dense and high-rate networks, vertical-cavity surface-emitting laser (VCSEL)-based OWC is considered as a strong contender for providing high data rates with ultra-small cells. Hence, this work quantitatively compares VCSEL-based OWC and THz communication in terms of energy efficiency. We derive the energy efficiency model for realistic systems by including non-linearity power conversion of VCSEL and area-bandwidth tradeoff of the photodiode (PD) for OWC, and gain and power loss in cascaded THz systems, respectively. Then, we formulate the similarity of embedding optical lenses into VCSEL-based system and high-directivity antenna into THz system to achieve high channel gain, i.e., leading to a gain-coverage tradeoff for both systems. Taking account of this performance tradeoff in analyzing two systems' energy efficiency, we show numerically the superiority of the VCSEL-based system, while the THz system is more robust in long-range scenarios due to a more relaxed relationship between pointing error and transmission distances. This study provides design guidelines for selecting appropriate technologies tailored to various 6G application scenarios from an energy efficiency perspective.},
keywords = {6G, Energy Efficiency, LRDC, Optical wireless communication, Vertical cavity surface emitting lasers},
pubstate = {published},
tppubtype = {misc}
}
Deng, Bohua; Chen, Chen; Huang, Haoyu; Li, Yibin; Tang, Yuru; Wei, Zixian; Luo, Yang; Liu, Min; Haas, Harald; Fu, H. Y.
Three-Dimensional Transmission Based UOWC in Complex Underwater Environments Journal Article
In: Journal of Lightwave Technology, pp. 1–13, 2024, ISSN: 0733-8724, 1558-2213.
Links | BibTeX | Tags: LRDC, Optical wireless communication
@article{deng_three-dimensional_2024,
title = {Three-Dimensional Transmission Based UOWC in Complex Underwater Environments},
author = {Bohua Deng and Chen Chen and Haoyu Huang and Yibin Li and Yuru Tang and Zixian Wei and Yang Luo and Min Liu and Harald Haas and H. Y. Fu},
url = {https://ieeexplore.ieee.org/document/10636089/},
doi = {10.1109/JLT.2024.3443351},
issn = {0733-8724, 1558-2213},
year = {2024},
date = {2024-01-01},
urldate = {2024-10-30},
journal = {Journal of Lightwave Technology},
pages = {1–13},
keywords = {LRDC, Optical wireless communication},
pubstate = {published},
tppubtype = {article}
}
Zhong, Xin; Chen, Chen; Zhao, Yinan; Liu, Min; He, Cuiwei; Haas, Harald
Dual-mode spatial index modulation for MIMO-OWC Journal Article
In: Optics Letters, vol. 49, no. 2, pp. 334, 2024, ISSN: 0146-9592, 1539-4794.
Abstract | Links | BibTeX | Tags: LRDC, MIMO, Optical wireless communication
@article{zhong_dual-mode_2024,
title = {Dual-mode spatial index modulation for MIMO-OWC},
author = {Xin Zhong and Chen Chen and Yinan Zhao and Min Liu and Cuiwei He and Harald Haas},
url = {https://opg.optica.org/abstract.cfm?URI=ol-49-2-334},
doi = {10.1364/OL.509658},
issn = {0146-9592, 1539-4794},
year = {2024},
date = {2024-01-01},
urldate = {2024-10-30},
journal = {Optics Letters},
volume = {49},
number = {2},
pages = {334},
abstract = {In this Letter, we propose and demonstrate a dual-mode spatial index modulation (DM-SIM) scheme for spectral efficiency enhancement of band-limited multiple-input multiple-output optical wireless communication (MIMO-OWC) systems. By performing dual-mode index modulation in the spatial domain, DM-SIM can transmit both spatial and constellation symbols. Since constellation design plays a vital role in the proposed DM-SIM scheme, we further propose three dual-mode constellation design approaches including phase rotation, amplitude scaling and joint phase rotation and amplitude scaling. Moreover, we also designed a differential log-likelihood ratio (LLR) detector for the proposed DM-SIM scheme. Experimental results show that the joint phase rotation and amplitude scaling approach can achieve a remarkable 3.2 dB signal-to-noise ratio (SNR) gain compared with the phase rotation approach in a 2×2 MIMO-OWC system applying DM-SIM.},
keywords = {LRDC, MIMO, Optical wireless communication},
pubstate = {published},
tppubtype = {article}
}
Eltokhey, Mahmoud Wafik; Bashir, Muhammad Salman; Younus, Othman Isam; Ghassemlooy, Zabih; Haas, Harald; Karagiannidis, George; Teli, Shivani Rajendra; Zvanovec, Stanislav; Khalighi, Mohammad-Ali; Zhang, Zhenyu Charlus; Hranilovic, Steve; Brandt-Pearce, Maïté; Linnartz, Jean-Paul; Trichili, Abderrahmen; Chun, Hyunchae; O'Brien, Dominic; Uysal, Murat; Alouini, Mohamed-Slim
Optical Wireless Communications: Illuminating the Path for Cooper's Law Miscellaneous
2024.
Links | BibTeX | Tags: LRDC, Optical wireless communication
@misc{eltokhey_optical_2024,
title = {Optical Wireless Communications: Illuminating the Path for Cooper's Law},
author = {Mahmoud Wafik Eltokhey and Muhammad Salman Bashir and Othman Isam Younus and Zabih Ghassemlooy and Harald Haas and George Karagiannidis and Shivani Rajendra Teli and Stanislav Zvanovec and Mohammad-Ali Khalighi and Zhenyu Charlus Zhang and Steve Hranilovic and Maïté Brandt-Pearce and Jean-Paul Linnartz and Abderrahmen Trichili and Hyunchae Chun and Dominic O'Brien and Murat Uysal and Mohamed-Slim Alouini},
url = {https://www.techrxiv.org/users/708396/articles/700309-optical-wireless-communications-illuminating-the-path-for-cooper-s-law?commit=aa24e95eedcf894f24fdf42272b0d651fbc6991b},
doi = {10.36227/techrxiv.170620142.21301431/v1},
year = {2024},
date = {2024-01-01},
urldate = {2024-10-30},
publisher = {Preprints},
keywords = {LRDC, Optical wireless communication},
pubstate = {published},
tppubtype = {misc}
}