Yazar "Baykaş, Tunçer" için listeleme
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Location aware vertical handover in a VLC/WLAN hybrid network
Zeshan, Arooba; Baykaş, Tunçer (IEEE-Institute of Electrical and Electronics Engineers Inc., 2021)Visible light communication (VLC) has emerged as a promising technology for wireless communication as it offers higher data rates and secure data transmission along with providing indoor illumination. However, VLC is ... -
Maximum SNR power-delay spectrum propagation models in blocked 60-GHz line-of-sight settings inside conference halls
Materum, Lawrence Y.; Baykaş, Tunçer; Sawada, Hirokazu; Kato, Slmzo (Praise Worthy Prize S.r.l, 2019)Models of the radio channel power delay profile are proposed for low-complexity 60 GHz communications systems that employ beam tracking capability in realistic indoor non-line-of-sight scenarios. A single-carrier transmission ... -
Measurement based statistical channel characterization of air-to-ground path loss model at 446MHz for narrow-band signals in low altitude UAVs
Ede, Burak; Yarkan, Serhan; Ekti, Ali Rıza; Baykaş, Tunçer; Çırpan, Hakan Ali; Görçin, Ali (IEEE-Institute of Electrical and Electronics Engineers Inc, 2020)Powered by the advances in microelectronics technologies, unmanned aerial vehicles (UAVs) provide a vast variety of services ranging from surveillance to delivery in both military and civilian domains. It is clear that a ... -
A microcontroller-based wireless multichannel neural data transmission system
Mukati, Muhammad Rizwan; Kocatürk, Samet; Kocatürk, Mehmet; Baykaş, Tunçer (Institute of Electrical and Electronics Engineers, 2017)Chronically implantable microelectrode arrays enable multichannel electrophysiological recordings from the mammalian brains during behavioral experiments. Wireless data transmission systems combined with the microelectrode ... -
Non-orthogonal multiple access for terahertz communication networks
Ülgen, Oğuz; Erküçük, Serhat; Baykaş, Tunçer (Institute of Electrical and Electronics Engineers Inc., 2020)Terahertz communications is one of the promising technologies for the future mobile communication networks. Due to the ever increasing need for high-speed data transfer, higher bandwidths are required. As a solution, higher ... -
A novel indoor channel model for tvws communications based on measurements
Hashir, Syed Muhammad; Erküçük, Serhat; Baykaş, Tunçer (Institute of Electrical and Electronics Engineers Inc., 2018)In this paper, we present an indoor measurement campaign for TV white space bands inside a university building. The measurement results are compared with different indoor propagation models in the literature. We observed ... -
A novel one-base station hybrid positioning method
Takshi, Hengameh; Nemati, Mahyar; Arvas, Ercüment; Baykaş, Tunçer (Institute of Electrical and Electronics Engineers Inc., 2017)In wireless networks, the need for accurate and low complexity localization methods are growing. Although many positioning methods based on signals' time difference of arrival (TDOA) and angle of arrival (AOA) have been ... -
Performance of TDOA and AOA localization techniques for different base-stations topologies
Nemati, Mahyar; Baykaş, Tunçer; Choi, Jinho (Institute of Electrical and Electronics Engineers Inc., 2019)Time difference of arrival (TDOA) and angle ofarrival (AOA) localization techniques provide satisfactory positioning performance utilizing multiple base-stations (BSs). However, their performance depends on the BSs topology, ... -
A practical physical-layer security method for precoded OSTBC-based systems
Hamamreh, Jehad M.; Güvenkaya, Ertuǧrul; Baykaş, Tunçer; Arslan, Hüseyin (Institute of Electrical and Electronics Engineers, 2016)In this work, we investigate the security performance obtained by employing a practical precoded orthogonal space time block coding method (POSTBC) in MISO wireless networks. In particular, space time codewords are precoded ... -
Predicting path loss distribution of an area from satellite ımages using deep learning
Ahmadien, Omar; Ateş, Hasan Fehmi; Baykaş, Tunçer; Güntürk, Bahadır Kürşat (IEEE - Institute of Electrical and Electronics Engineers, Inc., 2020)Path loss prediction is essential for network planning in any wireless communication system. For cellular networks, it is usually achieved through extensive received signal power measurements in the target area. When the ... -
Predicting path loss distributions of a wireless communication system for multiple base station altitudes from satellite images
Shoer, İbrahim; Güntürk, Bahadır Kürşat; Ateş, Hasan Fehmi; Baykaş, Tunçer (IEEE Computer Society, 2022)It is expected that unmanned aerial vehicles (UAVs) will play a vital role in future communication systems. Optimum positioning of UAVs, serving as base stations, can be done through extensive field measurements or ray ... -
Regression of large-scale path loss parameters using deep neural networks
Bal, Mustafa; Marey, Ahmed; Ateş, Hasan Fehmi; Baykaş, Tunçer; Güntürk, Bahadır Kürşat (IEEE-Institute of Electrical and Electronics Engineers Inc., 2022)Path loss exponent and shadowing factor are among important wireless channel parameters. These parameters can be estimated using field measurements or ray-tracing simulations, which are costly and time-consuming. In this ... -
Signal processing techniques for security enhancement of wireless networks at the physical layer
Soltani, Morteza (İstanbul Medipol Üniversitesi Fen Bilimleri Enstitüsü, 2017)Broadcast nature of wireless communications enables reaching multiple parties simultaneously. However, due to this property, the security of information trans- mission is prone to eavesdropping of unauthorized receivers. ... -
VLCnet: Deep learning based end-to-end visible light communication system
Ülkar, Mehmet Görkem; Baykaş, Tunçer; Pusane, Ali Emre (IEEE-Institute of Electrical and Electronics Engineers Inc, 2020)Visible light communication is a popular research area where proposed communication methods must satisfy the lighting related requirements as well. Suggested VLC modules should not only improve communication quality such ... -
Wireless channel modeling in the TVWS band based on measurements
Syed, Muhammad Hashir (İstanbul Medipol Üniversitesi Fen Bilimleri Enstitüsü, 2018)In this thesis, we study TV white space (TVWS) bands, which can be used in next generation networks, in indoor-indoor and indoor-outdoor environments. Path loss measurements are taken at the beginning, middle, and at the ...