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    Visible light positioning systems under imperfect synchronization and signal-dependant noise

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    CheemaA2022d-1a.pdf (2.312Mb)

    Date

    2022

    Author

    Cheema, Ahmad

    Degree

    Doctor of Philosophy

    Discipline

    Engineering : Electrical & Computer

    Subject

    Optical wireless communication
    Visible light communication
    6G communication technology

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    Abstract

    Optical Wireless Communication (OWC) is an enabling technology for sixth-generation (6G) and beyond communication networks. Visible light communication (VLC) is a crucial branch of OWC technology expected to meet 6G communication system requirements. The VLC system can facilitate multiple functionalities simultaneously including illumination, ultra-high data rate communications, positioning such as location and navigation services. In VLC systems, a light-emitting diode (LED) functions as a transmitter. A photodetector or imaging sensor acts as a receiver and the visible light is used as the transmission medium. Researchers have shown a great deal of interest in VLC based positing and localization techniques, as visible light positioning (VLP) systems have shown better localization accuracy than radio frequency (RF) based positioning or global positioning system (GPS). This thesis considers the problem of position estimation accuracy in VLC systems in the presence of signal-dependent shot noise (SDSN). We investigate distance and 3D position estimation approaches in different scenarios, focusing on error estimation performance bounds. Additionally, this work attempts to resolve the synchronization problem found in VLP systems.

    URI

    https://knowledgecommons.lakeheadu.ca/handle/2453/4908

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