@article{krishnamoorthy_optical_2025,

title = {Optical Wireless Communications: Enabling the Next-Generation Network of Networks},

author = {Aravindh Krishnamoorthy and Hossein Safi and Othman Younus and Hossein Kazemi and Isaac N. O. Osahon and Mingqing Liu and Yi Liu and Sina Babadi and Rizwana Ahmad and Asim Ihsan and Behnaz Majlesein and Yifan Huang and Johannes Herrnsdorf and Sujan Rajbhandari and Jonathan J. D. McKendry and Iman Tavakkolnia and Humeyra Caglayan and Henning Helmers and Graham Turnbull and Ifor D. W. Samuel and Martin D. Dawson and Robert Schober and Harald Haas},

url = {https://ieeexplore.ieee.org/document/10974735},

doi = {10.1109/MVT.2025.3555366},

issn = {1556-6080},

year  = {2025},

date = {2025-06-01},

urldate = {2025-10-08},

journal = {IEEE Vehicular Technology Magazine},

volume = {20},

number = {2},

pages = {20–39},

abstract = {Optical wireless communication (OWC) is a promising technology anticipated to play a key role in the next-generation network of networks (NoNs), especially as a complementary technology to traditional radio-frequency (RF) communications, for enhancing networking capabilities beyond conventional terrestrial networks. OWC is already a mature technology with diverse usage scenarios and can enable integrated applications via wireless access and backhaul networks, dynamic drone and satellite networks, underwater networks, inter- and intrasystem interconnecting networks, and vehicular communication networks. Furthermore, novel and emerging technological opportunities such as photovoltaic cells, orbital angular momentum-based modulation, optical reconfigurable intelligent surfaces, organic light-emitting and photo diodes, and recent advances in ultraviolet communications can help to enhance future OWC capabilities even further. Moreover, OWC networks can also support value-added services such as enhanced positioning and gesture recognition. Hence, OWC provides unique functionalities that can play a crucial role in building convergent and resilient future NoNs alongside RF and optical fiber technologies.},

keywords = {Bandwidth, Fiber optics, Laser beams, Optical fiber communication, Optical fibers, Optical transmitters, Terahertz communications, Vertical cavity surface emitting lasers, Wireless communication, Wireless networks},

pubstate = {published},

tppubtype = {article}

}

@article{he_chaotic_2025,

title = {Chaotic digital filter-based physical layer security with data-assisted tri-level encryption for heterogeneous access networks},

author = {Jiaxiang He and Roger P. Giddings and Wei Jin and Ming Hao and Jianming Tang},

url = {https://ieeexplore.ieee.org/document/10989603},

doi = {10.1364/JOCN.555584},

issn = {1943-0639},

year  = {2025},

date = {2025-06-01},

urldate = {2025-10-08},

booktitle = {Optical Fiber Communication Conference (OFC) 2025},

journal = {Journal of Optical Communications and Networking},

volume = {17},

number = {6},

pages = {448–458},

abstract = {Due to the increasing demand for robust network cybersecurity, future communication technologies must consider security as a mandatory design feature. However, existing physical layer security techniques can be excessively complex and too expensive to support resource-constrained devices in heterogeneous access networks with high connection densities. To address this challenge, a physical layer security technique employing chaotic digital filters (CDFs) with private security keys is proposed and experimentally validated, for the first time, in a 12 Gbit/s intensity modulation and direct detection optical system with a 25 km standard single-mode fiber. Noise-like private security key-based CDFs have security key-dependent changes in amplitude and phase frequency response, with permutation entropies of textbackslashgt 0.99, thus achieving data-assisted tri-level encryption by directly distorting the data signals, inducing interferences between data signals, and also intensifying the interferences via illegal detections. As CDFs are digitally integrable and offer features of “security-by-design,” “openness-by-design,” and “dynamic security at the traffic level,” the proposed technique facilitates an open and interoperable security solution with the utmost security for heterogeneous access networks.},

keywords = {Bandwidth, Chaotic communication, Encryption, Entropy, OFDM, Optical distortion, Optical fiber sensors, Optical fibers, Optical filters, Security},

pubstate = {published},

tppubtype = {article}

}

@article{xu_integrated_2025,

title = {Integrated Positioning and Communication Relying on Wireless Optical OFDM},

author = {Chao Xu and Christos Masouros and Shinya Sugiura and Periklis Petropoulos and Robert G. Maunder and Lie-Liang Yang and Harald Haas and Lajos Hanzo},

url = {https://ieeexplore.ieee.org/abstract/document/10900727},

doi = {10.1109/JSAC.2025.3543532},

issn = {1558-0008},

year  = {2025},

date = {2025-05-01},

urldate = {2025-10-08},

journal = {IEEE Journal on Selected Areas in Communications},

volume = {43},

number = {5},

pages = {1721–1737},

abstract = {Visible Light Positioning and Communication (VLPC) is a promising candidate for implementing Integrated Sensing And Communication (ISAC) in the unlicensed 400 THz to 800 THz band. The current Visible Light Positioning (VLP) systems mainly operate based on the Received Signal Strength (RSS) of the Line-of-Sight (LoS) path. However, its accuracy is degraded by interferences from Non-LoS (NLoS) paths. Furthermore, in Visible Light Communication (VLC) systems, the estimation of Channel State Information (CSI) also becomes challenging, when the optical channel becomes dispersive. Against this background, we propose a new VLPC scheme using Direct Current (DC) biased Optical Orthogonal Frequency-Division Multiplexing (VLPC-DCO-OFDM), where OFDM-based sensing is applied for the sake of improving the resolution of the estimated Channel Impulse Response (CIRs) exploited for positioning functionality. The CIRs estimated by sensing are further exploited to provide enhanced CSI for communication data detection. Moreover, we propose a hybrid Radar-RSS based solution, where the conventional RSS-aided VLP method is invoked for the sake of refining OFDM radar. Our simulation results demonstrate that the proposed VLPC-DCO-OFDM scheme – which simultaneously supports the triple functionalities of illumination, bi-static sensing and communication – is capable of achieving centimeter-level positioning accuracy and Giga-bits-per-second data rate.},

keywords = {Accuracy, Bandwidth, bi-static, Channel estimation, Estimation, Integrated sensing and communication, ISAC, Light emitting diodes, multipath, NLoS, non-line-of-sight, Nonlinear optics, OFDM, Optical sensors, orthogonal frequency-division multiplexing, Radar, Visible Light Communication, visible light positioning, VLC, VLP},

pubstate = {published},

tppubtype = {article}

}

@article{mckendry_eye_2025,

title = {Eye and skin-safe 150 Mbps Optical Wireless Communications over 1 m using UVC LEDs},

author = {Jonathan J. D. McKendry and Hichem Zimi and Yingjie Shao and Sujan Rajbhandari and Johannes Herrnsdorf and Martin D. Dawson},

url = {https://ieeexplore.ieee.org/document/11007139},

doi = {10.1109/LPT.2025.3571619},

issn = {1941-0174},

year  = {2025},

date = {2025-01-01},

urldate = {2025-10-08},

journal = {IEEE Photonics Technology Letters},

pages = {1–1},

abstract = {We demonstrate an eye and skin-safe optical wireless communication link, at a transmission distance of 1 m, using ultraviolet-C (UVC) light-emitting diodes (LEDs) emitting at 235 and 255 nm, with error-free data rates up to 150 Mbps. Irradiance levels at the receiver were maintained within eye and skin-safe exposure limits. Operating at these short wavelengths confers an improvement in received peak signal-to-noise ratio (SNR) compared to previous demonstrations around 270-280 nm, thanks to the higher permitted exposure limits at shorter UVC wavelengths.},

keywords = {Bandwidth, Current measurement, Light emitting diodes, Light-Emitting Diodes, OFDM, Optical receivers, Optical sensors, Optical transmitters, Optical variables measurement, optical wireless communications, OWC, Power measurement, Stimulated emission, Ultraviolet, UVC, Wireless communication},

pubstate = {published},

tppubtype = {article}

}

@article{hong_precoded_2025,

title = {Precoded Faster-Than-Nyquist Signaling Using Optimal Power Allocation for OTFS},

author = {Zekun Hong and Shinya Sugiura and Chao Xu and Lajos Hanzo},

url = {https://ieeexplore.ieee.org/document/10742918},

doi = {10.1109/LWC.2024.3491777},

issn = {2162-2345},

year  = {2025},

date = {2025-01-01},

urldate = {2025-10-08},

journal = {IEEE Wireless Communications Letters},

volume = {14},

number = {1},

pages = {173–177},

abstract = {A precoded orthogonal time frequency space (OTFS) modulation scheme relying on faster-than-Nyquist (FTN) transmission over doubly selective fading channels is proposed, which enhances the spectral efficiency and improves the Doppler resilience. We derive the input-output relationship of the FTN signaling in the delay-Doppler domain. Eigenvalue decomposition (EVD) is used for eliminating both the effects of inter-symbol interference and correlated additive noise encountered in the delay-Doppler domain to enable efficient symbol-by-symbol demodulation. Furthermore, the power allocation coefficients of individual frames are optimized for maximizing the mutual information under the constraint of the derived total transmit power. Our performance results demonstrate that the proposed FTN-based OTFS scheme can enhance the information rate while achieving a comparable BER performance to that of its conventional Nyquist-based OTFS counterpart that employs the same root-raised-cosine shaping filter.},

keywords = {Bandwidth, Delays, Doppler shift, doubly selective fading, Faster-than-Nyquist signaling, information rate, Information rates, Interference, mutual information, OTFS, Precoding, Pulse shaping methods, Receivers, Resource management, Symbols, Time-frequency analysis},

pubstate = {published},

tppubtype = {article}

}