Volker Jungnickel

Volker Jungnickel
Fraunhofer-Institut für Nachrichtentechnik, Heinrich-Hertz-Institut | HHI · Department of Photonic Networks and Systems

Prof. Dr.

About

303
Publications
138,543
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6,895
Citations
Introduction
Volker Jungnickel (M) received PhD and habilitation in Physics and Communications Engineering in 1995 and 2015, respectively. He joined Fraunhofer HHI in 1997, working on optical wireless communications, multiple antennas in mobile networks and fixed optical access networks. Volker teaches and supervises thesis at TU Berlin, where he was appointed as extraordinary professor in 2021. Volker serves in optical wireless standards as chair of IEEE P802.15.13 and as technical editor of IEEE P802.11bb.
Additional affiliations
October 2002 - present
Technische Universität Berlin
Position
  • Adjunct Lecturer
October 2002 - present
Technische Universität Berlin
Position
  • Adjunct Lecturer
Description
  • Courses on - Fundamentals of MIMO - Adaptive Transmission and Mobile Communications - Realtime Implementation
April 1997 - present
Fraunhofer-Institut für Nachrichtentechnik, Heinrich-Hertz-Institut
Position
  • Head of MAI Group
Description
  • Postdoc 1997-2000 Senior Research Associate 2001-2003 Project Manager 2004-2009 Head of Wireless Channels and Systems Group 2010-2012 Head of Metro-, Access and Inhouse Networks Group 2013-present
Education
September 2012 - March 2015
Technische Universität Berlin
Field of study
  • Habilitation Communications Engineering
March 1992 - October 1995
Humboldt-Universität zu Berlin
Field of study
  • Doctoral Researcher Experimental Physics
September 1986 - February 1992
Humboldt-Universität zu Berlin
Field of study
  • Physics

Publications

Publications (303)
Article
Full-text available
This article presents recent achievements and trends in high-speed indoor visible light communication (VLC) research. We address potential applications and future visions for the VLC technology, where transport of information is “piggybacked” on the original lighting function of LED-based lamps. To mature this technology and transfer it into practi...
Article
Full-text available
Smart phones, tablets, and the rise of the Internet of things are driving an insatiable demand for wireless capacity. This demand requires networking and Internet infrastructures to evolve to meet the needs of current and future multimedia applications. Wireless heterogeneous networks (HetNets) will play an important role towards the goal of using...
Article
Full-text available
5G will have to support a multitude of new applications with a wide variety of requirements, including higher peak and user data rates, reduced latency, enhanced indoor coverage, increased number of devices, and so on. The expected traffic growth in 10 or more years from now can be satisfied by the combined use of more spectrum, higher spectral eff...
Conference Paper
Full-text available
The evolution of 5G mobile radio and its complex interaction with fixed access network infrastructures poses new challenges and opportunities. In this article, a software-defined converged fixed-mobile 5G architecture is introduced using carrier-grade Ethernet as a transport platform. An active remote node (ARN) is used to connect end-users. Powere...
Article
Full-text available
This paper summarizes recent work on the use of optical wireless links as a robust outdoor backhaul solution for small radio cells, such as WiFi, LTE and 5G, over distances between 20 and 200 m. Results of a 5-month outdoor field trial in Berlin, Germany, indicate that the visibility range was never below 180 m, with more than 1 km in 99% of all ti...
Article
Full-text available
Communication for the Internet of things (IoT) currently is predominantly narrowband and cannot always guarantee low latency and high reliability. Future IoT applications such as flexible manufacturing, augmented reality and self-driving vehicles rely on sophisticated real-time processing in the cloud to which mobile IoT devices are connected. High...
Article
Full-text available
The transfer of health monitoring data from multiple patients using wireless body-area networks requires the use of robust, and energy and bandwidth efficient multiple-access schemes. This paper considers the frequency-division multiple access for the wireless uplink to a fixed access point when using infrared signals to collect medical data from s...
Article
Full-text available
With an emphasis on the real-time implementation of a practical carrier-less amplitude and phase (CAP) receiver for visible light communication (VLC), this paper proposes a full-digital architecture for the M-CAP receiver with synchronisation and adaptive blind equalisation. The architecture is mainly based on the observation that a CAP signal can...
Conference Paper
Full-text available
We present fast and accurate modelling of LiFi channels using data from LIDAR scans. Line-of-sight, first and residual reflections are modelled in the frequency-domain and using the integrating-sphere method. Model and measurement show good agreement.
Article
Full-text available
The wireless information carrier shift from the radio frequencies to optical frequencies has been studied in increasing detail since the invention of the laser in the 1960s [...]
Article
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We present a new, accurate, low complexity channel modelling methodology for LiFi in realistic indoor scenarios. A LIDAR scanner is used to capture the 3D environment in which the LiFi system is to be deployed. Next, the generated 3D point cloud data is pre-processed to determine the reflectance parameters of the walls and objects in the room. This...
Conference Paper
Full-text available
We demonstrate parallel high speed data transmission over single multimode fiber using VCSELs operating in the SWDM wavelength range (850 nm – 940 nm). Total demonstrated throughput of such system reaches 500 Gbit/s with 4-PAM modulation and 600 Gbit/s with DMT modulation.
Article
Full-text available
LiFi or networked optical wireless communication is likely to play an important role in offloading mobile data traffic from radio into the optical spectrum. As the number of Internet of Things (IoT) devices is growing, the RF spectrum becomes a rare resource. Imaging IoT sensors like cameras, ultrasonic devices, and Lidars have real-time requiremen...
Preprint
Full-text available
Communication for the Internet of Things (IoT) currently is predominantly narrowband and cannot always guarantee low latency and high reliability. Future IoT applications such as flexible manufacturing, augmented reality and self-driving vehicles rely on sophisticated real-time processing in the cloud to which mobile IoT devices are connected. High...
Article
Full-text available
Networked optical wireless communication, also denoted as LiFi, is expected to play an important role in so-called smart hospitals. In this paper, we present the first experimental study of LiFi in an operating room at Motol University Hospital in Prague, Czech Republic. First, we perform one-to-one measurements using an optical transmitter (Tx) an...
Preprint
Full-text available
In this paper, we report for the first time on a new channel modelling technique for multi-link LiFi scenarios. By considering simplified numerical calculation, it models the links between multiple optical frontends and multiple mobile devices much faster than previous approaches. For the first two diffuse reflections, we replace ray-tracing method...
Conference Paper
Full-text available
In this paper, we report for the first time on a new channel modelling technique for multi-link LiFi scenarios. By considering simplified numerical calculation, it models the links between multiple optical frontends and multiple mobile devices much faster than previous approaches. For the first two diffuse reflections, we replace ray tracing method...
Preprint
Full-text available
We report on the first real-time experiments with distributed MIMO and multiple users for LiFi. MIMO mode switching and angular diversity are beneficial for robustness. Multiuser multiplexing helps in scenarios where users have complementary MIMO channels. © 2021 The Author(s) 1. Introduction LiFi is a short-range optical wireless communication (OW...
Article
Full-text available
Precise position information is considered as a main enabler for the implementation of smart manufacturing systems in Industry 4.0. In this article, a time-of-flight based indoor positioning system for LiFi is presented based on the ITU-T recommendation G.9991.Our objective is to realize positioning by reusing already existing functions of the LiFi...
Conference Paper
Full-text available
The Internet of Things currently is predominantly narrowband and cannot always guarantee high reliability and low latency. Future IoT applications such as flexible manufacturing, augmented reality and self-driving vehicles need sophisticated real-time processing units in the cloud to which mobile IoT devices are connected. These high-capacity links...
Conference Paper
Full-text available
Safe operation of driver assistance systems, especially at higher speeds, remains a challenge. For this automotive application, we propose a long-range coherent LiDAR system concept with two-dimensional micro electro-mechanical system (MEMS) scanning and sparse sensing capability. We address system design challenges for the transmitter, the fiber-b...
Conference Paper
The Internet of Things currently is predominantly narrowband and cannot always guarantee high reliability and low latency. Future IoT applications such as flexible manufacturing, augmented reality and self-driving vehicles need sophisticated real-time processing units in the cloud to which mobile IoT devices are connected. These high-capacity links...
Preprint
Full-text available
We demonstrate an LED-based optical wireless link for fixed wireless access applications, at data rates of 1.5 Gbit/s over 50 m. Transmission between indoor equipment and outdoor access point is possible through metal-coated insulation glass.
Article
Full-text available
Abstract High‐speed discrete multitone serial data transmission over multi‐mode fibre at gross data rates up to 224 Gbit/s achieved with directly modulated oxide‐confined vertical cavity surface emitting lasers at 850 and 910 nm are presented.
Article
Full-text available
LiFi has been considered as a promising candidate for future wireless indoor networks. The IEEE P802.15.13 and P802.11bb standardization groups agreed upon channel models generated using the non-sequential ray tracing approach of OpticStudio. In this paper, in order to validate the channel modelling approach, at first 2 × 2 multiple-input multiple-...
Article
Full-text available
We present a concept for networked optical wireless communications, also denoted as LiFi, to meet the requirements of industrial wireless applications. These are primarily mobility support with moderate data rates per device, reliable real-time communication and integrated positioning. We describe a distributed multiuser multiple-input multiple-out...
Article
Full-text available
Energy consumption is one of the critical issues in optical wireless communications transmitter design and a limiting factor to miniaturization and deployment in mobile devices. In order to reduce energy requirements, we assess a physical layer based on high-bandwidth on-off keying modulation. The use of on-off keying allows for highly efficient tr...
Conference Paper
Full-text available
We demonstrate an LED-based optical wireless link for fixed wireless access applications, at data rates of 1.5 Gbit/s over 50 m. Transmission between indoor equipment and outdoor access point is possible through metal-coated insulation glass.
Conference Paper
Full-text available
We report on the first real-time experiments with distributed MIMO and multiple users for LiFi. MIMO mode switching and angular diversity are beneficial for robustness. Multiuser multiplexing helps in scenarios where users have complementary MIMO channels.
Conference Paper
Full-text available
This paper shows the feasibility of a networked LiFi system using a distributed multiple-input multiple-output (MIMO) link for optical wireless transmission and a plastic optical fiber (POF) link as a fixed front-haul between distributed optical front-ends, and a centralized signal processing unit. The concatenation of POF and optical wireless link...
Conference Paper
Full-text available
Researches have been conducted on Optical Wireless Communication (OWC) technology for a decade now, and because of the complexity, it naturally took a long way to become applicable for practical use cases. Current access systems are not sufficient to meet the continuously increasing demand on network performance of various applications. Visible Lig...
Conference Paper
Full-text available
Communication is the fundamental requirement for smart manufacturing. Due to the rough environment and several other boundary conditions of smart manufacturing, such as flexible structures and movable machines, radio communication technologies are suffering due to the physical effects of fading, reflection, attenuation and range. Light Fidelity (L...
Preprint
Full-text available
Energy consumption is one of the critical issues in optical wireless communications transmitter design and a limiting factor to miniaturization and deployment in mobile devices. In order to reduce energy requirements, we assess a physical layer based on high-bandwidth on-off keying modulation. The use of on-off keying allows for highly efficient tr...
Conference Paper
Full-text available
In this paper, we investigate 2 × 2 MIMO light communication channels using non-sequential ray-tracing simulations, and measurements over 200 MHz bandwidth using a MIMO channel sounder. Results indicate good agreement between simulations and measurements validating the accuracy of ray-tracing.
Conference Paper
Full-text available
LiFi uses the light for mobile communications. Advantages of laser-compared to LED-based LiFi systems are better energy efficiency and higher modulation bandwidth, yielding enhanced mobility, higher data rates, more precise positioning and reduced latency in promising 6G applications like mobile backhaul, secure meeting rooms and industrial or medi...
Technical Report
Full-text available
This contribution presents a validation of TGbb channel models based on ray tracing based on wideband measurements.
Conference Paper
Full-text available
The evolving Internet of Things (IoT) opens a new mass market for wireless communications. Future IoT applications have diverse performance requirements, such as high data rates, reliable time-sensitive networking, support for high mobility and high user density. As a potential key role in the sixth generation (6G) mobile communication networks, li...
Conference Paper
Full-text available
In this paper, we report on a bidirectional LiFi system which is integrated with a plastic optical fiber (POF) link acting as fronthaul to make the system fully robust against EMI. We have implemented the POF link using two specifically developed circuit boards interfacing directly with the DSP and the LiFi frontends. The fronthaul transports analo...
Conference Paper
Full-text available
Light communications, also denoted as LiFi, is promising for future wireless indoor networks. For performance evaluation, the IEEE P802.15.13 and P802.11bb standardization groups agreed upon channel models based on non-sequential ray tracing. In this paper, we validate the modeling approach behind by means of measurements. The same indoor scenarios...
Conference Paper
Full-text available
We present LiFi channel measurements in a neurosurgery room of Motol University Hospital in Prague. Individual channels are combined into a virtual multiuser MIMO link. We report achievable data rates for different LiFi transmission schemes.
Article
There has been an ongoing quest for transceiver technologies to be employed in next-generation passive optical networks (PONs) beyond 25G due to the growing number of subscribers and connected devices per subscriber and the ever-increasing bandwidth demand per device/application. Given the cost and loss/power budget requirements, the candidates see...
Presentation
Full-text available
SOFT HANDOVER SOLUTION FOR G.9991 presentation as supplement to T17-SG15-C-1965-Soft-handover.docx
Conference Paper
Full-text available
We propose a new system concept for LiFi in industrial wireless applications. A distributed multi-user multiple-input multiple-output (MU-MIMO) architecture is used, enabling seamless mobility, reliable low-latency communications, and integration with positioning and 5G.
Conference Paper
Full-text available
This paper presents a systematic experimental study of non-line-of-sight (NLOS) communication channels for a networked mobile optical communication system denoted as Li-Fi. The experimental setup uses high-power light-emitting diodes (LEDs) with wide beam at the transmitter (Tx) and large-area photodiodes (PDs) with wide field-of-view (FOV) at the...
Conference Paper
Full-text available
Berlin has become one of the EU's strategic spot for the evolution of 5G networks due in part to several ongoing activities supporting the effort. So far, there has been a huge investment from 5G Berlin Innovation Cluster to deliver a unique infrastructure providing opportunities for research centres, SMEs, and start-ups to develop novel solutions...