Browsing by Author "Uysal, Murat"
Now showing items 21-40 of 216
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Centralized light access network (C-LiAN): a novel paradigm for next generation indoor VLC networks
Kizilirmak, R. Ç.; Narmanlıoğlu, Ömer; Uysal, Murat (IEEE, 2017)Visible light communication (VLC) builds upon the idea of using existing lighting infrastructure for wireless data transmission. In a conventional VLC network, each light fixture acts as an access point (AP) which are ... -
Channel estimation for amplify-and forward relaying: cascaded against disintegrated estimators
Amin, O.; Gedik, B.; Uysal, Murat (IEEE, 2010)The authors investigate the performance of amplify-and-forward relaying with two different pilot-symbol-assisted channel estimation methods. In the first estimation method, the cascaded channel consisting of source-to-relay ... -
Channel estimation in underwater cooperative OFDM system with amplify-and-forward relaying
Şenol, H.; Panayırcı, E.; Erdoğan, M.; Uysal, Murat (IEEE, 2012)This paper is concerned with a challenging problem of channel estimation for amplify-and-forward cooperative relay based orthogonal frequency division multiplexing (OFDM) systems in the resence of sparse underwater acoustic ... -
Channel modeling and characterization for visible light communications
Miramirkhani, F.; Uysal, Murat (IEEE, 2015-12)In this paper, we present a comprehensive channel modeling and characterization study for visible light communications. Our study is based on ray tracing, which allows for an accurate description of the interaction of rays ... -
Channel modeling and characterization for visible light communications: indoor, vehicular and underwater channels
Miramirkhani, Farshad (2018-06)Despite the increasing attention on visible light communications (VLC) systems, there is a lack of proper visible light (VL) channel models. This is a serious concern since channel modeling is the very first step for ... -
Channel modeling for visible light communications
Miramirkhani, F.; Uysal, Murat; Panayirci, E. (Springer Science+Business Media, 2016)In this chapter, we present a novel and realistic channel modeling approach for visible light communications that overcomes to the limitations of previous works. In our work, we consider wavelength dependency, effect of ... -
Channel modelling and characterization for visible light communications
Sarbazi, E. (2014-08)Visible light communications (VLC) involve the dual use of illumination infrastructure (i.e., LEDs) for wireless communication purposes. Despite the growing academic and industrial interest, there is a lack of realistic ... -
Coded continuous phase modulation for tactical communications
Foruhandeh, M. (2014-08)Satisfying the various demands of tactical transceivers is one the common challenges in military communications. Different modulation, coding and spread spectrum techniques are needed to meet these requirements. Although ... -
Comparative performance evaluation of MIMO visible light communication systems
Damen, M. O.; Narmanlioglu, O.; Uysal, Murat (IEEE, 2016)In this paper, we consider multiple-input multiple-output (MIMO) visible light communication (VLC) systems. The physical layer of VLC system builds upon optical orthogonal frequency division multiplexing (O-OFDM). Repetition ... -
Cooperative BICM-OFDM systems for frequency-selective relay channels
Heidarpour, M. R.; Uysal, Murat (IEEE, 2011)In this paper, we consider a cooperative multi-carrier multi-relay system over frequency-selective fading channels. Specifically, we adopt the orthogonal frequency division multiplexing (OFDM) with bit-interleaved ... -
Cooperative communication techniques for future-generation HF radios
Uysal, Murat; Heidarpour, M. R. (IEEE, 2012-10)When Hurricane Katrina hit the Gulf Coast of the United States in 2005, it severely damaged the telecommunications infrastructure, isolating the area from the outside world. With all the high-end emergency communication ... -
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, O.; Caglar Kizilirmak, R.; Miramirkhani, F.; 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 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 ... -
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 ... -
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 ...
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