Yazar "Miramirkhani, Farshad" seçeneğine göre listele

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    A European view on the next generation optical wireless communication standard
    (Institute of Electrical and Electronics Engineers, 2015) Jungnickel, Volker; Uysal, Murat; Serafimovski, Nikola; Baykaş, Tunçer; O'Brien, Dominic; Ciaramella, Eernesto; Ghassemlooy, Zabih; Green, Roger; Haas, Harald; Haigh, Paul Anthony; Gil Jiménez, VÍctor; Miramirkhani, Farshad; Wolf, Mike; Zvánovec, Stanislav
    Optical wireless technology uses light for mobile communications. The idea is to simultaneously combine the illumination provided by modern high-power light-emitting diodes (LEDs) with high-speed wireless communications. There have been numerous practical demonstrations of this concept, and the technology is now well matured to be deployed in practice. Independent market analysts forecast a high-volume market for mobile communication devices connected to the ubiquitous lighting infrastructure. This paper aims to make optical and wireless industries aware of the requirement for standardization in this area. The authors present the view of the European COST 1101 research network OPTICWISE towards a next-generation optical wireless standard aiming at data rates from 1 Mbit/s to 10 Gbit/s. Besides key technical insights, relevant use cases and main features are described that were recently adopted by the IEEE 802.15.7r1 working group. Moreover, a channel model is introduced to enable assessment of technical proposals.
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    Comparative performance evaluation of VLC, LTE and WLAN technologies in indoor environments
    (Institute of Electrical and Electronics Engineers Inc., 2021) Zeshan, Arooba; Karbalayghareh, Mehdi; Miramirkhani, Farshad; Uysal, Murat; Baykaş, Tunçer
    Recent years have seen an exponential rise in the demand for indoor wireless connections that have driven future generation networks to aim for higher data rates with extended coverage and affordable rates. The two most prominent technologies for providing indoor wireless connections, WLAN and LTE, have their limitations and they can not coexist in a single band to form heterogeneous networks (HetNets). Visible light communication (VLC) has seen rapid growth in recent years as it has the capability to seamlessly merge with the existing technologies and provide wireless connections with high data rates. VLC based hybrid indoor network effectively combines the preferences of an end-user with the practicality of implementation. In this work, we investigate specific VLC/WLAN and VLC/LTE hybrid scenarios to perform a detailed analysis on the effect of user mobility on the performance of the system and how the performance of the network (in terms of throughput) can be maximized The study aims to show how different technologies complement each other in the best and even the worst-case scenarios.
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    IEEE 802.15.7r1 reference channel models for visible light communications
    (IEEE-Inst Electrical Electronics Engineers Inc, 2017) Uysal, Murat; Miramirkhani, Farshad; Narmanlıoğlu, Ömer; Baykaş, Tunçer; Panayırcı, Erdal
    The IEEE has established the standardization group 802.15.7r1 "Short Range Optical Wireless Communications", which is currently in the process of developing a standard for visible light communication (VLC). As with any other communication system, realistic channel models are of critical importance for VLC system design, performance evaluation, and testing. This article presents the reference channel models that were endorsed by the IEEE 802.15.7r1 Task Group for evaluation of VLC system proposals. These were developed for typical indoor environments, including home, office, and manufacturing cells. While highlighting the channel models, we further discuss physical layer techniques potentially considered for IEEE 802.15.7r1.