During this Winter 2020 ❄️, some of our ESRs saw their work in the VisIoN project published. 📄
Congratulations to all of them! 👏
Here is a recap of their latest articles in academic journals, conference proceedings, by month.
You can also find these publications listed here, with the rest of our VisIoN publications.
➡️ ESR9, Elizabeth Eso, and ESR6, Shivani Rajendra Teli, teamed up for an article published in Optic Letters “400 m rolling-shutter-based optical camera communications link“.
Abstract: In this Letter, we develop a novel technique, to the best of our knowledge, to increase the link span (𝐿𝑠) of a rolling shutter (RS)-based optical camera communications (OCC) system by reducing the spatial bandwidth of the camera in the out-of-focus regions. We demonstrate a 400 m line-of-sight RS-based OCC link, which is to date the longest 𝐿𝑠 reported in these systems, and develop a detection method to extract the information out of the video frames, successfully. The proposed system relaxes the condition of a large surface area for the transmitter light source. Consequently, we show that at 400 m 𝐿𝑠 and exposure times of 100–80 µs, a data rate of 450 bps is achieved successfully.
Elizabeth Eso, Shivani Rajendra Teli, Navid Bani Hassan, Stanislav Vitek, Zabih Ghassemlooy, Stanislav Zvanovec, “400 m rolling-shutter-based optical camera communications link”, Optic Letters, vol. 45, no. 5, pp. 1059-1062, March 2020.
➡️ ESR7, Zahra Nazari Chaleshtori, and ESR8, Hossien Badr Eldeeb, worked together on publishing the article “Coverage of a shopping mall with flexible OLED-based visible light communications” in Optics Express.
Abstract: Visible light communications (VLC) can utilize light-emitting diodes (LEDs) toprovide illumination and a safe and low-cost broadcasting network simultaneously. In the pastdecade, there has been a growing interest in using organic LEDs (OLEDs) for soft lighting anddisplay applications in public places. Organic electronics can be mechanically flexible, thus thepotential of curved OLED panels/displays devices. This paper provides unique characteristicsof a flexible OLED-based VLC link in a shopping mall. We show that, for curved OLED theradiation pattern displays a symmetry, which is wider than Lambertian. A number of scenariosof VLC system with flexible OLED are analyzed. Numerical models for the delay spread andoptical path loss are derived, which followed a 2-term power series model for both empty andfurnished rooms. We show that using a full-circular OLED for both empty and furnished roomsoffers a uniform distribution of emitted power for the same transmission link spans. The linkperformance using full and half-circular OLED in an empty room shows that the average opticalpath losses are lower by 5 and 4 dB, compared with the furnished room.
Zahra Nazari Chaleshtori, Stanislav Zvanovec, Zabih Ghassemlooy, Hossien Badr Eldeeb, Murat Uysal, “Coverage of a shopping mall with flexible OLED-based visible light communications”, Optics Express, vol. 28, no. 7, pp. 10015-10026, March 2020.
➡️ ESR12, Sreelal Maravanchery Mana, participated in the proceeding “LiFi Experiments in a Hospital” at the Optical Fiber Communication Conference (OFC) 2020, in San Diego, United States, on the 8-12 March 2020.
Abstract: We present LiFi channel measurements in aneurosurgery room of Motol University HospitalinPrague. Individual channelsare combinedinto a virtual multiuser MIMOlink. We report achievable data ratesfor different LiFi transmission schemes.
Sreelal Maravanchery Mana, Peter Hellwig, Jonas Hilt, Kai Lennert Bober, Volker Jungnickel, Klara Hirmanova, Petr Chvojka, Radek Janca, Stanislav Zvanovec, “LiFi Experiments in a Hospital” in Optical Fiber Communication Conference (OFC) 2020, San Diego, CA, USA, 8-12 March 2020.
➡️ ESR12, Sreelal Maravanchery Mana, and ESR13, Sepideh Mohammadi Kouhini, both participated in “LiFi for Industrial Wireless Applications“, also presented at the Optical Fiber Communication Conference (OFC) 2020.
Abstract: 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 po-sitioning and 5G.
Volker Jungnickel, Pablo Wilke Berenguer, Sreelal Maravanchery Mana, Malte Hinrichs, Sepideh Mohammadi Kouhini, Kai Lennert Bober, Christoph Kottke, “LiFi for Industrial Wireless Applications” in Optical Fiber Communication Conference (OFC) 2020, San Diego, CA, USA, 8-12 March 2020.
➡️ ESR15, Oussama Haddad‘s work on “Channel characterization for optical extra-WBAN links considering local and global user mobility“, was presented at SPIE Photonics West Conference, Broadband Access Communication Technologies, in February 2020.
Abstract: We investigate channel characterization for wireless body-area networks (WBANs) in medical applications usingoptical signal transmission. More specifically, we focus on uplink communication from a central coordinator node(CN), placed on the patient’s body, to an access point (AP) in a typical hospital room, which is usually referredto as extra-WBAN link. Using a ray-tracing based approach, we quantify the main characteristics of the opticalchannel while considering the effects of body shadowing and mobility (accounting for body movements and userglobal mobility inside the room). Based on the presented results, we discuss the impact of the positions of theCN and the AP on the link parameters. We also evaluate the link performance based on the outage probabilitycriterion, and further quantify the performance improvement achieved by using multiple APs in the room.
Oussama Haddad, Mohammad-Ali Khalighi, Stanislav Zvanovec, “Channel characterization for optical extra-WBAN links considering local and global user mobility” in Broadband Access Communication Technologies XIV, vol. 11307, International Society for Optics and Photonics, SPIE, February 2020, pp. 89-97.
➡️ ESR2,Vicente Matus, ESR9,Elizabeth Eso, and ESR6, Shivani Rajendra Teli, teamed up for the article “Experimentally Derived Feasibility of Optical Camera Communications under Turbulence and Fog Conditions” published in Sensors.