@inproceedings{7672,
  abstract     = {{Visible light communication (VLC) allows the dual use of lighting and wireless communication systems by
modulation of illumination devices. However, to increase the performance, typically, beam-forming measures are
taken creating pencil beams, thus contradicting the illumination purpose. In order to optimize the performance
trade o between ecient illumination and communication, the switching capabilities of illumination LEDs are
examined. Illumination LEDs with standard drivers and without beam-forming show limited applicability for
communication purposes as they are not optimized for the necessary switching capability (f  11 MHz) and
coherence. Methods to enhance the electrical current by pre-equalisation, biasing, carrier sweeping and current
shaping are examined in respect to the illumination LED's communication performance. A novel driver scheme
is derived which achieves considerably higher switching frequencies (f  100 MHz) without employing beamforming
at the illumination LED. This driver is able to obtain a data rate of up to 200 Mbit/s at a distance of
3.2 m, using on-o keying (OOK) modulation technique. Therefore, it is feasible to apply the LED driver by
implementing standardised illumination devices in VLC systems.}},
  author       = {{Schneider, Daniel and Shrotri, Abhijeet Narendra and Flatt, Holger and Stübbe, Oliver and Lachmayer, Roland}},
  booktitle    = {{Integrated Optics: Design, Devices, Systems and Applications VI}},
  editor       = {{Cheben, Pavel and Čtyroký, Jiří and Molina-Fernández, Iñigo}},
  isbn         = {{978-1-5106-4384-0}},
  issn         = {{1996-756X}},
  keywords     = {{Optical Wireless Communication, Visible Light Communication, VLC, Li-Fi, Illumination, Dual-purpose drivers}},
  location     = {{Online (Prag)}},
  publisher    = {{SPIE}},
  title        = {{{Efficient visible light communication drivers using illumination LEDs in industrial environments}}},
  doi          = {{10.1117/12.2588923}},
  volume       = {{11775}},
  year         = {{2021}},
}

@article{4899,
  abstract     = {{The real and effective ground of all new concepts dedicated to the current advanced factories, as well as to the future digital ones, is close cooperativity of scattered applications in highly heterogeneous systems. Communication is the key enabling component, and all new approaches are inspired in practice to the demanding characteristics of industrial networks. These kinds of computer networks, together with new technologies derived from distant application fields, are the main technological means to accelerate the fast evolution of modern factory systems. Due to various communication requirements coming from the plurality of structures, components and application contexts, communication subsystems must be increasingly heterogeneous. Let us say clearly: this evolution cannot be stopped at this stage, no special universal solution is possible, and thinking about monogamous networking is a kind of dreamland. This paper is an analysis of the state of the art in the matter of heterogeneous networking in industry. It deeply investigates both wired and wireless technologies from the point of view of technological aspects and relevant key performance indicators, such as those related to dependability, and it contains a prospective estimation of future trends.}},
  author       = {{Scanzio, Stefano and Wisniewski, Lukasz and Gaj, Piotr}},
  issn         = {{0166-3615}},
  journal      = {{Journal Computers in Industry}},
  keywords     = {{Industrial networks, Heterogeneity, Dependability, Interoperability, Real-time, Reliability, Ethernet, Wireless, Wi-Fi, WSAN, SDN, TSN, 5G, CPS, IIoT, I4.0}},
  number       = {{Febr. 2021}},
  publisher    = {{Elsevier}},
  title        = {{{Heterogeneous and Dependable Networks in Industry - a Survey}}},
  doi          = {{10.1016/j.compind.2020.103388}},
  volume       = {{125}},
  year         = {{2021}},
}