A VCSEL array transmission system with novel beam activation mechanisms

Zeng, Zhihong and Soltani, Mohammad Dehghani and Safari, Majid and Haas, Harald (2021) A VCSEL array transmission system with novel beam activation mechanisms. IEEE Transactions on Communications, 70 (3). pp. 1886-1900. ISSN 0090-6778 (https://doi.org/10.1109/TCOMM.2021.3134265)

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Abstract

Optical wireless communication (OWC) is considered to be a promising technology which will alleviate traffic burden caused by the increasing number of mobile devices. In this study, a novel vertical-cavity surface-emitting laser (VCSEL) array is proposed for indoor OWC systems. To activate the best beam for a mobile user, two beam activation methods are proposed for the system. The method based on a cornercube retroreflector (CCR) provides very low latency and allows real-time activation for high-speed users. The other method uses the omnidirectional transmitter (ODTx). The ODTx can serve the purpose of uplink transmission and beam activation simultaneously. Moreover, systems with ODTx are very robust to the random orientation of a user equipment (UE). System level analyses are carried out for the proposed VCSEL array system. For a single user scenario, the probability density function (PDF) of the signal-to-noise ratio (SNR) for the central beam of the VCSEL array system can be approximated as a uniform distribution. In addition, the average data rate of the central beam and its upper bound are given analytically and verified by Monte-Carlo simulations. For a multi-user scenario, an analytical upper bound for the average data rate is given. The effects of the cell size and the full width at half maximum (FWHM) angle on the system performance are studied. The results show that the system with a FWHM angle of 4◦ outperforms the others

  • Item type:Article
    ID code:78816
    Dates:
    Date
    Event
    10 December 2021
    Published
    27 November 2021
    Accepted
    Notes:© 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting /republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
    Subjects:Technology > Electrical engineering. Electronics Nuclear engineering
    Department:Faculty of Engineering > Electronic and Electrical Engineering
    Depositing user: Pure Administrator
    Date deposited:07 Dec 2021 16:33
    Last modified:11 Apr 2024 02:21
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/78816
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