Browsing by Author "Uysal, Murat"
Now showing items 61-80 of 391
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Cooperative inter-vehicular communications in highway traffic
Feteiha, M. F.; Uysal, Murat; Ahmad, A. R. (2011)In this paper, we investigate the performance of a single relay assisted cooperative vehicular network in a highway traffic scenario. Source and relaying vehicles are assumed to be traveling in the same direction with ... -
Cooperative MIMO-OFDM based inter-vehicular visible light communication using brake lights
Narmanlıoğlu, Ömer; Turan, B.; Ergen, S. C.; Uysal, Murat (Elsevier, 2018-05)Inter-vehicular connectivity to enhance road safety and support highly autonomous driving is increasingly becoming popular. Despite the prevalent works on radio-frequency (RF) based vehicular communication schemes, visible ... -
Cooperative transmission for broadband vehicular networks over doubly selective fading channels
Feteiha, M.F.; Uysal, Murat (IEEE, 2012-06)Cooperative communication has been recently applied to vehicular networks to enable coverage extension and enhance link reliability through distributed spatial diversity. In this study, the authors investigate the performance ... -
Cooperative underwater acoustic communications
Al-Dharrab, S.; Uysal, Murat; Duman, T. M. (IEEE, 2013-07)This article presents a contemporary overview of underwater acoustic communication (UWAC) and investigates physical layer aspects on cooperative transmission techniques for future UWAC systems. Taking advantage of the ... -
Cooperative visible light communications
Narmanlioglu, Ömer; Caglar Kizilirmak, R.; Miramirkhani, Farshad; Uysal, Murat (Springer Science+Business Media, 2016)In this chapter, we explore the concept of cooperative transmissions in the context of visible light communications (VLC). An indoor office space is considered with two light sources; the one at the ceiling is connected ... -
Cooperative visible light communications with full-duplex relaying
Narmanlıoğlu, Ömer; Kizilirmak, R. Ç.; Miramirkhani, Farshad; Uysal, Murat (IEEE, 2017-06)In this paper, we investigate cooperative visible light communication (VLC) system where an intermediate light source acts as a relay terminal. We assume that relay terminal operates in full-duplex mode. In contrast to ... -
Coordinated beamforming design for multi-user multi-cell MIMO VLC networks
Naser, S.; Bariah, L.; Jaafar, W.; Muhaidat, S.; Al-Qutayri, M.; Uysal, Murat; Sofotasios, P. C. (IEEE, 2022-06)Inter-cell interference (ICI) and inter-user interference (IUI) constitute a major issue towards achieving the optimum spectral efficiency (SE) and energy efficiency (EE) performance in multi-cell visible light communication ... -
Coordinated interference management for visible light communication systems
Kashef, M.; Abdallah, M.; Qaraqe, K.; Haas, H.; Uysal, Murat (IEEE, 2015-11)In this paper, we consider the performance of a visible light communication (VLC) network with coordinated interference management. The VLC transmitters are allowed to coordinate their transmissions using one of two ... -
Coverage analysis of downlink MU-MIMO cellular networks
Arsal, Ali; Civanlar, Mehmet Reha; Uysal, Murat (IEEE, 2021-09)In this letter, we analyze the coverage performance of multi-user multiple-input multiple-output (MU-MIMO) downlink cellular networks. We model the locations of the base stations and mobile users using Poisson Point Processes ... -
Coverage of a shopping mall with flexible OLED-based visible light communications
Chaleshtori, Z. N.; Zvanovec, S.; Ghassemlooy, Z.; Eldeeb, Hossıen Badr; Uysal, Murat (The Optical Society, 2020-03-30)Visible light communications (VLC) can utilize light-emitting diodes (LEDs) to provide illumination and a safe and low-cost broadcasting network simultaneously. In the past decade, there has been a growing interest in using ... -
A cross-layer design for dynamic resource management of VLC networks
Demir, Muhammet Selim; Uysal, Murat (IEEE, 2021-03)In this article, we propose a cross-layer resource management mechanism for an indoor multiuser visible light communication (VLC) access network. The physical layer builds upon DC-biased orthogonal frequency division ... -
A custom-design atmospheric channel emulator for the performance evaluation of free space optical communication systems
Kebapçı, Burak (2017-08)The properties of atmospheric chamber and measurement methods that are used in this system are explained and analyzed in detail. We present our own custom design atmospheric channel emulator for FSO system evaluations and ... -
A custom-design atmospheric channel emulator for the performance evaluation of free space optical communication systems
Kebapci, Burak; Miramirkhani, Farshad; Nouri, Hatef; Uysal, Murat (IEEE, 2017)In this paper, we present our custom design atmospheric channel emulator for free space optical (FSO) system evaluations in a controlled environment. Our emulator is in the form of an atmospheric chamber with dimensions ... -
DCT-OFDM tabanlı görünür ışık haberleşmesi
Narmanlıoglu, Ömer; Uysal, Murat (2016)Visible light communication (VLC) is a short-range wireless transmission technique in which light emitting diodes (LEDs) are used as data transmitters. Because of non-coherent characteristics of LEDs, only intensity can ... -
Deep Q-learning based optimization of VLC systems with dynamic time-division multiplexing
Siddiqi, U. F.; Sait, S. M.; Uysal, Murat (IEEE, 2020)The traditional method to solve nondeterministic-polynomial-time (NP)-hard optimization problems is to apply meta-heuristic algorithms. In contrast, Deep Q Learning (DQL) uses memory of experience and deep neural network ... -
Deep reinforcement based power allocation for the max-min optimization in non-orthogonal multiple access
Siddiqi, U. F.; Sait, S. M.; Uysal, Murat (IEEE, 2020)NOMA is a radio access technique that multiplexes several users over the frequency resource and provides high throughput and fairness among different users. The maximization of the minimum the data-rate, also known as ... -
Delivery phase in cache-based wireless networks with modified LT codes
Raouf, A. H. F.; Abouei, J.; Jaseemuddin, M.; Uysal, Murat (Springer Nature, 2020-10)Caching has emerged as an efficient technique to reduce delivery latency and network congestion. The focus of this paper is on content delivery in the caching-based wireless systems. In view of the fact that in such systems, ... -
Design and analysis of broadband amplify-and-forward cooperative systems: A fractionally-spaced sampling approach
Heidarpour, M. R.; Uysal, Murat; Damen, M. O. (IEEE, 2016-10-01)In this paper, we propose novel fractionally-spaced frequency-domain equalizers for the amplify-and-forward cooperative systems. In the proposed equalization schemes, the sampling rate of the received signal remains at ... -
Development of a single-chip visible light communication receiver
The VLC has drawn the attention in the last decade, which is simply based on the data transmission over the visible light (400nm-700nm). It is considered as an alternative to RF-based technologies and offers unlicensed ...
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