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Multi-Gbit/s LiFi Experiments With a VCSEL TX and an Enhanced Pulsed Modulation PHY
Malte Hinrichs;Giulio Boniello;Dominic Schulz;Ronald Freund;Volker Jungnickel
Journal of Lightwave Technology
Year: 2025 | Early Access Article |
Due to its better power efficiency, pulsed modulation such as on-off keying (OOK) has the potential of maximizing reach and minimizing energy consumption for future high data rate optical wireless communication (OWC), especially LiFi systems. In this paper, we introduce enhancements of the OOKbased Pulsed Modulation Physical Layer (PM-PHY) defined in IEEE Std. 802.15.13-2023. Namely, we evaluate r...Show More
Investigation of MIMO-DSP for SDM With Weakly-Coupled Multicore Fibers in Access Networks
Ziyan Ma;Sarah Cwalina;Christoph Kottke;Kai Habel;Vladislav Neskorniuk;Igor Koltchanov;André Richter;Volker Jungnickel;Ronald Freund
2024 International Workshop on Fiber Optics in Access Networks (FOAN)
Year: 2024 | Conference Paper |
This paper investigates Multiple Input Multiple Output (MIMO) DSP for space-division multiplexing (SDM) using weakly-coupled multicore fiber (WC-MCF) and intensity modulation-direct detection (IM-DD). A transmission experiment shows limited to no benefit of MIMO DSP in short access networks with 1 km WC-MCF.Show More
LiFi for Industry 4.0: Main Features, Implementation and Initial Testing of IEEE Std 802.15.13
Kai Lennert Bober;Anselm Ebmeyer;Falko Dressler;Ronald Freund;Volker Jungnickel
As industrial communication continues to evolve to increase flexibility through wireless communication, networked optical wireless communication (OWC), also known as LiFi, has emerged as a promising candidate technology due to its unlicensed spectrum and relatively deterministic propagation. The inherent containment of light improves security, enables dense cellular networks with spatial reuse, an...Show More
Real-Time Experiments Towards an Automotive OFDMA Communication Bus
2024 IEEE 99th Vehicular Technology Conference (VTC2024-Spring)
Year: 2024 | Conference Paper |
Today's automotive communication systems use baseband pulse modulation and time-division multiple access. Future in-vehicle networks will need to serve a growing number of devices in a multipoint-to-multipoint topology. Therefore, we present a new automotive bus system which allows enhanced channel adaptation and fine-granular multi-user access based on orthogonal frequency division multiple acces...Show More
SEKA: Secretless Key Exchange and Authentication in LiFi Networks
Eric Ackermann;Kai Lennert Bober;Volker Jungnickel;Anja Lehmann
2024 IEEE 9th European Symposium on Security and Privacy (EuroS&P)
Year: 2024 | Conference Paper |
Light Fidelity (LiFi) networks transmit information via light waves and are an interesting alternative to Radio Frequency networks: as light can be confined easily, LiFi provides better performance and makes eavesdropping attacks much more difficult. A core application of LiFi networks is self-contained and local networks among a group of autonomous devices, e.g., in industrial or medical environm...Show More
Optical Wireless for Industrial Communication: Practical Results Using IEEE Std 802.15.13: (Invited Paper)
Lennert Bober;Anselm Ebmeyer;Jonathan Andree;Falko Dressler;Volker Jungnickel
2024 IEEE International Conference on Communications Workshops (ICC Workshops)
Year: 2024 | Conference Paper |
Cited by: Papers (1)
We present recent work on a proof-of-concept of cell-free distributed multiple-input multiple-output (D-MIMO) based on the new IEEE 802.15.13 standard for optical wireless communication in industrial applications. The design includes a coordinator with multiple distributed optical frontends (OFEs) in a multiple-input single-output (MISO) configuration, as well as mobile devices. The coordinator is...Show More
Fronthaul Synchronization Requirements for Distributed MIMO in LiFi Systems
Anselm Ebmeyer;Kai Lennert Bober;Malte Hinrichs;Volker Jungnickel
2024 IEEE Wireless Communications and Networking Conference (WCNC)
Year: 2024 | Conference Paper |
Cited by: Papers (2)
We assess the impact of synchronization errors in distributed multiple-input multiple-output (D-MIMO) LiFi systems when using Ethernet as fronthaul. To this end, we perform a sensitivity analysis of a distributed multiple-input single-output (D-MISO) LiFi system model by running link level simulations of a joint transmission scheme in a worst-case scenario. Specifically, we investigate the impact ...Show More
Handover-Aware Scheduling for Small- and Large-Scale VLC Networks
Mahmoud Wafik Eltokhey;Mohammad Ali Khalighi;Zabih Ghassemlooy;Volker Jungnickel
This paper proposes handover-aware scheduling solutions for multi-cell small- and large-scale visible-light communication networks, enabling soft handover. For this, we coordinate the transmissions at the access points (APs), serving the users in different time slots based on their locations with respect to the AP coverage areas for an efficient utilization of the resources. For scenarios where co...Show More
A Performance Comparison of OFDM and Pulsed PHY Modulations in Optical Wireless Communications
Malte Hinrichs;Wesley Costa;Helder Rocha;Maria Pontes;Marcelo Segatto;Anagnostis Paraskevopoulos;Volker Jungnickel;Ronald Freund;Jair Silva
2023 South American Conference On Visible Light Communications (SACVLC)
Year: 2023 | Conference Paper |
In this paper, we experimentally compare orthogonal frequency-division multiplexing (OFDM) and on-off keying (OOK) modulation in the context of the IEEE 802.15.13-2023 standard at bandwidths up to 50 MHz across a Li-Fi link with distances up to 5 m and a lateral offset up to 51°. Error vector magnitude (EVM) and bit error rate (BER) evaluations confirm that the high peak-to-average power ratio (PA...Show More
Demonstration of a Real-Time 100G Ethernet Space Division Multiplexing PON Using a Weakly Coupled Multicore Fiber
Sarah Cwalina;Sepideh Kouhini Mohammadi;Kai Habel;Volker Jungnickel;Ronald Freund
2023 International Workshop on Fiber Optics on Access Networks (FOAN)
Year: 2023 | Conference Paper |
Cited by: Papers (1)
We demonstrate a real-time 100G Ethernet transmission over space division multiplexing - passive optical network using a weakly coupled seven-core fiber in a point-to-multipoint layout. The application of this demonstration is targeting optical access networks, e.g., 5G/6G fronthaul. We perform RFC 2544 benchmarking and error-free 100G transmission to 25G optical network units using commercial tra...Show More
190 GBd PAM-4 Signal Generation using Analog Multiplexer IC with On-Chip Clock Multiplier
Jonathan Schostak;Tobias Tannert;Markus Grözing;Volker Jungnickel;Christian Schmidt;Holger Rücker;Manfred Berroth;Ronald Freund
2023 18th European Microwave Integrated Circuits Conference (EuMIC)
Year: 2023 | Conference Paper |
Cited by: Papers (3)
We present a new 2:1 analog multiplexer IC with an integrated clock multiplier for increased analog bandwidth of digital-to-analog converters. The IC is manufactured in a next generation 130nm SiGe technology, providing > 110 GHz of analog bandwidth for the through-path of the IC. We show that the integrated clock multiplier enables very high symbol rates, at the cost of a smaller clock operation ...Show More
An Automotive Communication Bus Using OFDMA
2023 23rd International Conference on Transparent Optical Networks (ICTON)
Year: 2023 | Conference Paper |
Cited by: Papers (1)
Today’s automotive communication systems use baseband pulse modulation and time-division or carrier-sense multiple access. In future in-vehicle networks, more devices need to be connected in a multipoint-to-multipoint topology. We have developed a new automotive bus system based on orthogonal frequency division multiple access (OFDMA) enabling better channel adaptation and fine-granular multi-user...Show More
Compressed Sensing for Feedback Generation in OFDM Based LiFi Systems
Javad Gholipour;Kai Lennert Bober;Malte Hinrichs;Volker Jungnickel
2023 IEEE Wireless Communications and Networking Conference (WCNC)
Year: 2023 | Conference Paper |
Cited by: Papers (1)
In this paper, we evaluate the effectiveness of compressed-sensing-based channel estimation in LiFi orthogonal frequency-division multiplex (OFDM) systems with multiple-input multiple-output (MIMO). The sparseness of LiFi channels suggests that it is beneficial to utilize compressed sensing which has been investigated also for radio communications. In this paper, we formulate the mathematical prob...Show More
A Proof of Concept Implementation of LiFi over Power Line Networks based on ITU-T G.hn
2023 IEEE International Symposium on Power Line Communications and its Applications (ISPLC)
Year: 2023 | Conference Paper |
Cited by: Papers (1)
Outdoor-to-indoor radio penetration is the main bottleneck for indoor reception of mobile services. Nowadays, Wi-Fi is commonly used in wireless indoor networks but limited through interference from neighboring networks through walls and limited available spectrum. A possible new approach is to add optical wireless communication, also called light fidelity (LiFi), to modern indoor wireless network...Show More
Techno-economic study of very dense optical wireless access using visible or infrared light
Carmen Mas-Machuca;Madeleine Kaufmann;Jean-Paul Linnartz;Maximilian Riegel;Dominic Schulz;Volker Jungnickel
Future wireless networks need to serve a high density of end-user devices with a high quality of service. The density of wireless access points and the infrastructure behind them lead to substantial cost. We study this cost impact for the particular case of optical wireless communication [also denoted as light fidelity (LiFi)] in a large manufacturing hall. We compare different LiFi network topolo...Show More
Toward AI-Enhanced VLC Systems for Industrial Applications
Wesley Costa;Higor Camporez;Malte Hinrichs;Helder Rocha;Maria Pontes;Marcelo Segatto;Anagnostis Paraskevopoulos;Volker Jungnickel;Ronald Freund;Jair Silva
Journal of Lightwave Technology
Cited by: Papers (7)
In this paper, artificial intelligence tools are implemented in order to predict trajectory positions, as well as channel performance of an optical wireless communications link. Case studies for industrial scenarios are considered to this aim. In a first stage, system parameters are optimized using a hybrid multi-objective optimization (HMO) procedure based on the grey wolf optimizer and the non-s...Show More
Hybrid-Fidelity: Utilizing IEEE 802.11 MIMO for Practical Aggregation of LiFi and WiFi
Anatolij Zubow;Piotr Gawłowicz;Carolin Brunn;Kai Lennert Bober;Volker Jungnickel;Kai Habel;Falko Dressler
We present Hy-Fi, a system that aggregates light fidelity (LiFi) and radio frequency (RF)-based communication on the 802.11 (WiFi) physical layer by utilizing the MIMO capabilities in IEEE 802.11-compliant commodity WiFi chips. Hy-Fi is based on two key ideas. First, we use inexpensive commodity hardware to facilitate direct transmission of WiFi waveforms over the optical wireless channel, as this...Show More
INGR Roadmap Optics Chapter
Dan Kilper;Thas A Nirmalathas;Tom Hausken;Reza Vaez-Ghaemi;HwanSeok Chung;Prakash Ramchandran;Volker Jungnickel;Murat Yuksel;Surgey Ten;Rudra Dutta;Paolo Monti;Lena Wosinska;Peter Andrekson;Suresh Subramaniam;Ahsutosh Dutta;KRS Murthy;Zuqing Zhu;Brad Kloza;Matthew Borst;Haydar Çukurtepe;Rentao Gu
2022 IEEE Future Networks World Forum (FNWF)
Year: 2022 | Conference Paper |
Optical networks have long played a central role in telecommunication networks, forming the fiber backbone of the Internet. Over time fiber optic systems have evolved and found deployment increasingly closer to the network edge. Today, optical systems extend to the server network interface cards and home access networks. New application areas have emerged such as the use of free space communicatio...Show More
INGR Roadmap Optics Chapter
Dan Kilper;Thas A Nirmalathas;Tom Hausken;Reza Vaez-Ghaemi;HwanSeok Chung;Prakash Ramchandran;Volker Jungnickel;Murat Yuksel;Surgey Ten;Rudra Dutta;Paolo Monti;Lena Wosinska;Peter Andrekson;Suresh Subramaniam;Ahsutosh Dutta;KRS Murthy;Zuqing Zhu;Brad Kloza;Matthew Borst;Haydar Çukurtepe;Rentao Gu
Year: 2022 | Conference Paper |
Demonstration of 1.75 Gbit/s VCSEL-based Non-Directed Optical Wireless Communications with OOK and FDE
Malte Hinrichs;Giulio Boniello;Peter Hellwig;Dominic Schulz;Christoph Kottke;Martin Schubert;Ronald Böhnke;Wen Xu;Ronald Freund;Volker Jungnickel
2022 European Conference on Optical Communication (ECOC)
Year: 2022 | Conference Paper |
Reducing Overhead for Low-Power Optical Wireless Communications
Malte Hinrichs;Benjamin Poddig;Peter Hellwig;Volker Jungnickel
IECON 2022 – 48th Annual Conference of the IEEE Industrial Electronics Society
Year: 2022 | Conference Paper |
Cited by: Papers (2)
We demonstrate on-off-keying optical wireless transmissions according to the IEEE P802.15.13 PM-PHY, in which we replace the 8b10b line-coding by guided and non-guided data scramblers and compensate the remaining high-pass distortions through a frequency domain equalizer. The cyclic prefix length is identified as a critical parameter in balancing performance and transmission overhead, especially a...Show More
LiFi Positioning and Optimization in an Indoor Factory Environment
Ziyan Ma;Sepideh Mohammadi Kouhini;Christoph Kottke;Ronald Freund;Volker Jungnickel;Marcel Müller;Daniel Behnke
IECON 2022 – 48th Annual Conference of the IEEE Industrial Electronics Society
Year: 2022 | Conference Paper |
Cited by: Papers (2)
Positioning technology is considered to be an essential tool for future Internet of Things (IoT) applications, especially for the smart factory. Compared to traditional wireless network positioning systems, LiFi (Light Fidelity) localization technology has a greater potential to provide the sub-meter level accuracy required for smart manufacturing applications, due to its low multi-path and flat c...Show More
Software-defined LiFi - RF network for Industry 4.0 applications
Anagnostis Paraskevopoulos;Michael Schlosser;Warunee Pluemakarapunya;Dominic Schulz;Peter Hellwig;Julian Hohmann;Mathias Bohge;Thomas Menzel;Hagen Woesner;Volker Jungnickel
IECON 2022 – 48th Annual Conference of the IEEE Industrial Electronics Society
Year: 2022 | Conference Paper |
Mobility is a crucial aspect when using optical wireless technology (LiFi) in an Industry 4.0 manufacturing environment. This paper presents initial results with the wireless network concept developed in the SESAM-project combining LiFi and radio frequency (RF) prototypes. In a first stage, the performance of a high-speed LiFi cell providing spatial diversity is evaluated when mobility issues are ...Show More
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