Fully Passive User Localization for Beam-Steered High-Capacity Optical Wireless Communication System

Koonen, Ton; Mekonnen, Ketemaw; Huijskens, Frans; Pham, Ngoc-Quan; Cao, Zizheng; Tangdiongga, E.

doi:10.1109/jlt.2020.2980428

Cited by 34 publications

(20 citation statements)

References 12 publications

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“…To ease the pressure in the radio frequency (RF) spectrum, new spectrum opportunities, such as the optical spectrum, are being studied. One of the main technologies being considered is optical wireless communication (OWC), which provides large bandwidth and makes use of the unlicensed spectrum 1 . An emerging solution among the OWC technologies is visible light communication (VLC) (a.k.a light fidelity or LiFi).…”

Section: Introductionmentioning

confidence: 99%

Passive OFE multi‐Gbps VLC transmission using POF as a feeder line

Corrêa

Mekonnen

Huijskens

et al. 2022

Micro & Optical Tech Letters

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This paper presents a novel in-home communication system employing plastic optical fibers (POFs) acting both as transmission medium and access point for wireless links to user devices, hence no separate luminaires or optical-electrical-optical conversions is required. All active devices, such as lasers/detectors, can be remotely placed from the room ceilings, resulting in fully passive optical front-ends, which is beneficial for maintenance and upgrading. We approach two concepts, the first aims to realize small but highcapacity hotspots in a room, the second creates larger coverage areas to increase the number of users and allow user's mobility. The wavelength division multiplexing concept is used to maximize the wireless throughput and to serve different wireless access points on the ceilings from a single POF feeder. A transmission link comprising eye-safe transceivers, 1-mm core diameter step-index POF, and free space link, achieving multi-gigabit throughputs using spectral efficient modulation formats, is demonstrated.

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Section: Introductionmentioning

confidence: 99%

Passive OFE multi‐Gbps VLC transmission using POF as a feeder line

Corrêa

Mekonnen

Huijskens

et al. 2022

Micro & Optical Tech Letters

Self Cite

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“…The ability to integrate communication and computing is used in the future 5G mobile communication network with multilevel computing to solve the problem of the limited computing power of mobile terminals, efficient spectrum sensing, layered coding, and airport adaptive transmission to overcome the problem of unstable mobile channel transmission and delay guarantee mechanism to ensure the delay of mobile ARIVR services. However, research on the application of combining instant messaging with virtual reality technology is relatively routed and still in the exploration stage [7]. The system targets autistic patients and can measure patients' gaze-related index during their interaction with virtual companions, and this index can be mapped to their corresponding anxiety level.…”

Section: Introductionmentioning

confidence: 99%

3D Virtual Animation Instant Network Communication System Design

Liu

Chen

Tian

2021

Wireless Communications and Mobile Computing

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This project uses Openfire to implement a virtual 3D animation instant messaging system, which is easier to use and more expandable. The main work of the client is to implement the Extensible Messaging and Presence Protocol (XMPP) and use XMPP to transmit data to the server side and receive data from the server side, while Openfire is built by the server side to use. To address the problem that the current mainstream face key point localization model is less robust to complex environments, this project adopts a deep learning-based approach to design and implement the face key point localization model, through data preprocessing, model design, and model training, to achieve a robust model that can locate 68 face key points and complete the migration of the model to mobile. The current video communication often suffers from delay and lag, so this project uses face key point data instead of video stream data transmission to reduce the pressure on the network. This topic also uses voice coding and decoding, noise reduction, echo cancellation, and other processing to solve the problems of noise interference and echo interference in voice transmission. This paper also introduces the creation, import, and loading of 3D virtual models, and explains how to use face key point association to drive 3D animation models, how to make the drive smoother and more natural, and using individual face key points as an example.

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“…Besides, the camera and beam-steering device are not coaxial and system calibration is required. A fully passive localization approach is also proposed by using an optical corner retroreflector near the receiver, which is suitable for the beam with large diameter of the footprint [13], but the reflected beam suffers from a slight lateral offset. There are many other indoor position systems that have not been applied in IR OWC system, such as Zigbee-based indoor positioning and radio frequency identification (RFID) [14].…”

Section: Introductionmentioning

confidence: 99%

LiDAR Integrated High-Capacity IR OWC System with Abilities of Localization and Link Alignment

Zhi¹

2021

Preprint

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By using narrow infrared (IR) beams, optical wireless communication (OWC) system can realize ultra-high capacity and high-privacy transmission. However, due to the point-to-point connection approach, a high-accuracy localization system and beam-steering antenna (BSA) are required to steer the signal beam to user terminals. In addition, to achieve link alignment in the receiver, the BSA needs to be within the limited receiver field of view (FoV). This problem greatly limits the practical application of high-capacity IR optical wireless communication and has not been well solved yet. In this paper, we proposed an indoor beam-steering IR OWC system with high-accuracy and calibration-free localization ability by employing a coaxial frequency modulated continuous wave (FMCW) light detection and ranging (LiDAR) system. In the meantime, benefit from the mm-level ranging accuracy of the LiDAR system, a feasible approach to deal with the link alignment issue for practical applications is firstly demonstrated. With the assistance of the LiDAR system, we experimentally achieved the localization of user terminals with a 0.038-degree localization accuracy, link alignment at the receiver and an error-free on-off keying (OOK) downlink transmission of 20 Gb/s in free space at 3-m distance is demonstrated.

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Fully Passive User Localization for Beam-Steered High-Capacity Optical Wireless Communication System

Cited by 34 publications

References 12 publications

Passive OFE multi‐Gbps VLC transmission using POF as a feeder line

Passive OFE multi‐Gbps VLC transmission using POF as a feeder line

3D Virtual Animation Instant Network Communication System Design

LiDAR Integrated High-Capacity IR OWC System with Abilities of Localization and Link Alignment

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