Browsing by Author "Elamassie, Mohammed"

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    Citation - Scopus: 1
    Analysis and Optimization of the Network Throughput in IEEE 802.15.13 based Visible Light Communication Networks
    (IEEE, 2021) Bulbul, Yusuf; Elamassie, Mohammed; Baykas, Tuncer; Uysal, Murat
    In line with the growing interest on visible light communication (VLC), IEEE has initiated standardization efforts on this emerging technology. In this work, we consider IEEE 802.15.13 Optical Wireless Personal Area Networks (OWPAN) standard draft. The underlying MAC protocol uses contention free and contention access periods. For a standard-compliant VLC network, we analyze the network load and propose an algorithm to improve the network throughput by proper selection of period lengths. Our suggested algorithm improves the network performance by at least 5% in the case of variable network traffic up to 15 active users.
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    Citation - WoS: 4
    Citation - Scopus: 9
    IEEE 802.11BB Reference Channel Models for Light Communications
    (IEEE-Inst Electrical Electronics Engineers Inc, 2023) Miramirkhani, Farshad; Baykas, Tuncer; Elamassie, Mohammed; Uysal, Murat
    Increasing industrial attention to visible light communications (VLC) technology led the IEEE 802.11 to establish the task group 802.11bb "Light Communications" (LC) for the development of a VLC standard. As a part of the standard development process, the development of realistic channel models according to possible use cases is of critical importance for physical layer system design. This article presents the reference channel models for the mandatory usage models adopted by IEEE 802.11bb for the evaluation of system proposals. The use cases include industrial, medical, enterprise, and residential scenarios. Channel impulse responses and corresponding frequency responses are obtained for each use case using a ray tracing approach based on realistic specifications for transmitters and receivers, and optical characterization of the environment.