Browsing Electrical & Electronics Engineering by Author "3"
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Adaptive OFDM-based acoustic underwater transmission: system design and experimental verification
Sadeghi, Mohammad; Elamassie, Mohammed; Uysal, Murat (IEEE, 2017)In this paper, we present the design and implementation of a software defined orthogonal frequency division multiplexing (OFDM)-based underwater acoustic (UWA) communication system with link adaptation. Our system ... -
Advantages of application-based scheduling for indoor femtocells
Mungan, Devin; Ferazoğlu, Gülden; Sunay, Mehmet Oğuz; Civanlar, Mehmet Reha; Kaytaz, B. (ACM, 2011)This paper presents the necessity of application-based scheduling to maintain QoS requirements of all active applications in an indoor femtocell. A novel scheduler is proposed which takes into account the quality of service ... -
Changing passband on microstrip hairpin band-pass filter
Benar, Cem; Tafida, Ibrahim Abbas; Kündüz, Mehmet Polat; Imeci, T.; Saral, A. (IEEE, 2016)In this work, a microstrip hairpin band-pass filter is designed and simulated in Sonnet Suite, a 3-D Planar Electromagnetic simulation tool [1]. A microstrip hairpin band-pass filter in any desired pass band can be obtained ... -
Channel modeling and performance characterization of underwater visible light communications
Elamassie, Mohammed; Miramirkhani, Farshad; Uysal, Murat (IEEE, 2018-07-03)Underwater visible light communication (UVLC) has emerged as an attractive complementary solution to long-range acoustic communication and is able to achieve much higher data speeds. In this paper, we investigate the ... -
CoMP-based dynamic handover for vehicular VLC networks
Demir, Muhammet Selim; Eldeeb, Hossıen Badr; Uysal, Murat (IEEE, 2020-09)Visible light communication (VLC) has emerged as a potential wireless connectivity solution for infrastructure-to-vehicle networks where street lights can be configured to serve as access points. In this letter, we propose ... -
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 ... -
Dağıtık bir openflow kontrol birimi mimarisi
Yazıcı, Volkan; Sunay, Mehmet Oğuz; Ercan, Ali Özer (IEEE, 2012)Considering the modern internet traffic rates, the network architecture is of particular importance as the running services itself. On the other hand, due to the increasing complexity and black-box structure of the available ... -
Double U slot patch antenna
Oztuna, Atakan; Kansiz, Ayse; Kaya, Canberk; Saracoglu, Merve; Erboyaci, Ozan; Imeci, T.; Saral, A. (IEEE, 2016)In this paper, we aim to design to simulate `double u slot patch antenna'. Our simulation and experimental investigation aimed to understand the behavior of the two U-slots. It can be used in WiMAX compliant communication ... -
Dual-band gemini-shaped microstrip patch antenna for C-band and X-band applications
Djengomemgoto, Gerard; Altunok, Reha; Karabacak, Cem; İmeci, Ş. T.; Durak, T. (IEEE, 2017)In this paper, a novel single-layer Gemini-shaped patch antenna with dual-band characteristics is presented. The proposed patch antenna, with design operating frequencies of 6.53 GHz and 8.62 GHz, is targeted for applications ... -
Effect of camera-IMU displacement calibration error on tracking performance
Maxudov, Nekruzjon; Ercan, Ali Özer; Erdem, Tanju (IEEE, 2015)Due to their complementary properties, inertial measurement units (IMU) and cameras are used in ego-motion tracking applications. For this, the relative rotation and displacement between the camera and IMU reference frames ... -
eU-OFDM based multiple access for visible light communication networks
Djengomemgoto, Gerard; Narmanlıoğlu, Ömer; Kizilirmak, R. C.; Uysal, Murat (IEEE, 2017)In this paper, we propose a novel protocol for cooperative multiple access in visible light communication (VLC) networks. The proposed protocol exploits the features of enhanced unipolar orthogonal frequency division ... -
Experimental investigation of the impact on TCP traffic by hidden video-tagged UDP traffic
Çakmak, Kıvanç; Sunay, Mehmet Oğuz; Ercan, Ali Özer; İlhan, C.; Çakar, C.; Sofuoğlu, Ç. (IEEE, 2017)This paper investigates the impact of video-tagged UDP traffic on best-effort TCP traffic in an experimental setup with a novel observation approach. Our setup consists of three 802.11ac nodes in a hidden node topology, ... -
An experimental study of a bluetooth communication system for robot motion control
Dalgiç, Oğuzhan; Tekin, Ahmet; Uğurlu, Regaip Barkan (IEEE, 2019)This paper presents a method that aims to reduce the complex cabling problem in robotics applications, so as to prevent difficulties in troubleshooting processes and failures in case of cable breaks. Examples in the ... -
Handover in VLC networks with coordinated multipoint transmission
Demir, Muhammet Selim; Miramirkhani, Farshad; Uysal, Murat (IEEE, 2018-01-31)In this work, we consider a cellular visible light communication (VLC) network where each ceiling luminary serves as an access point (AP). The network is assumed to support coordinated multipoint transmission (CoMP). The ... -
IEEE 802.15.7r1 reference channel models for visible light communications
Uysal, Murat; Miramirkhani, Farshad; Narmanlioglu, Ömer; Baykas, T.; Panayirci, E. (IEEE, 2017)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 ... -
Low-cost thin-film passive RFID circuits and detector system
El-Sawy, Salma; Nawaz, Wasim; Abouzeid, Mohamed Osama Hussein Soliman; Tekin, Ahmet (Cambridge University Press, 2020-06)This paper discusses the design of chip-less RFID tags of a standard pocket size of 69 mm by 156 mm. These tags are based on lumped elements of copper metal traces constructed on a thin polyamide flexible substrate. Moreover, ... -
Microstrip patch antenna design with unified cornered rectangles
Devli, Ata; Celik, Mert; Demir, Berkay; İmeci, T.; Saral, A. (IEEE, 2016)In this design, high-gain, directional microstrip patch antenna works at 11.1 GHz, which is in Ku-Band satellite receive frequency band. Our design has 3 nested rectangular patches which are cornered. As a result, the input ... -
A mobile channel model for vlc and application to adaptive system design
Miramirkhani, Farshad; Narmanlıoğlu, Ömer; Uysal, Murat; Panayirci, E. (IEEE, 2017-05)In this letter, we propose a realistic channel model for visible light communication (VLC) assuming a mobile user. Based on non-sequential ray tracing, we first obtain channel impulse responses for each point over the user ... -
Object tracking and identification by quantum radar
Durak, Kadir; Jam, Naser Chamani; Dindar, Çağrı (SPIE, 2019)Quantum Radar is a promising technology that could have a strong impact on the civilian and military realms. In this study we introduce a new concept design for implementing a Quantum Radar, based on the time and polarization ...
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