Browsing Electrical & Electronics Engineering by Author "1"
Now showing items 41-60 of 294
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Connectivity considerations for mission planning of a search and rescue drone team
Adam, Evşen Yanmaz (TÜBİTAK, 2020)In this paper, we analyze the mission success performance and mission times of centralized, distributed, and hybrid path-planning methods for a drone team whose mission is to find a target and inform the ground control. ... -
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 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 ... -
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 properties of clustered wireless sensor networks
Machado, R.; Zhang, W.; Wang, G.; Tekinay, Şirin (ACM, 2010-08)This article studies clustered wireless sensor networks (WSNs), a realistic topology resulting from common deploymentmethods.We study coverage in naturally clustered networks of wireless sensor nodes, as opposed to WSNs ... -
Cryogenic 1.2 to 116 GHz receiver for large arrays
Weinreb, S.; Mani, H.; Zhong, W.; Flygare, J.; Billade, B.; Akgiray, Ahmed Halid; Dong, L. (IEEE, 2018)Current and future large arrays for radio astronomy are compared and the Next Generation Very Large Array, ngVLA, is introduced. Receiver requirements are described and a 4-feed system covering 1.2 to 116 GHz, in a single ... -
CSSTag: optical nanoscale radar and particle tracking for in-body and microfluidic systems with vibrating graphene and resonance energy transfer
Gülbahar, Burhan; Memisoglu, G. (IEEE, 2017-12)Biological particle tracking systems monitor cellular processes or particle behaviors with the great accuracy. The emissions of fluorescent molecules or direct images of particles are captured with cameras or photodetectors. ... -
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, ... -
Depression-level assessment from multi-lingual conversational speech data using acoustic and text features
Demiroğlu, Cenk; Besirli, A.; Özkanca, Yasin Sedar; Celik, S. (Springer Nature, 2020-11-17)Depression is a widespread mental health problem around the world with a significant burden on economies. Its early diagnosis and treatment are critical to reduce the costs and even save lives. One key aspect to achieve ... -
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 ... -
Design and comparison of 4 types of dual resonance proximity coupled microstrip patch antennas
Majidi, Negar; Sobhani, M. R.; Kılıç, B.; İmeci, M.; Güngör, O. S.; İmeci, Ş. T. (The Applied Computational Electromagnetics Society, 2018-10)In this paper there are four different shapes of proximity patch antennas (straight, trimmed, trapezoid and ribbon). The minimum input match achieved with the straight proximity patch antenna as -39.68 dB. The maximum gain ... -
Design and fabrication of high-frequency ultra-wideband 1D CMUT arrays for acoustic angiography applications - preliminary results
Adelegan, O. J.; Kemal, Remzi Erkan; Yamaner, F. Y.; Dayton, P. A.; Oralkan, Ö. (IEEE, 2018-12-20)For superharmonic imaging applications involving the use of microbubble contrast agents, transducers that can transmit energy at low frequencies (less than 5 MHz) to excite the microbubbles, and at the same time detect ... -
Design and implementation of a quad element patch antenna at 5.8 GHz
Sobhani, M. R.; Majidi, Negar; İmeci, Ş. T. (The Applied Computational Electromagnetics Society, 2018-10)This paper presents simulation and experimental verification of a quad microstrip patch antenna that operates at 5.8 GHz. Sonnet antenna design software was used to simulate the performance of the antenna. To reduce the ... -
Design and implementation of dual band microstrip patch antenna for WLAN energy harvesting system
Amjad, Osama; Munir, Syeda Wajiha; Imeci, S. T.; Ercan, Ali Özer (2018-07)Since the demand for self-sustained wireless systems is increasing, there is a trend towards RF energy harvesting. It is a key solution to energize the low power systems such as the Internet of Things (IoT) devices without ... -
Design and simulation of microfluidic device for metabolite screening and quantitative monitoring of drug uptake in cancer cells
Asif, Afia; Khawaldeh, S.; Khan, Muhammad Salman; Tekin, Ahmet (Sciendo, 2018)Although liquid-liquid extraction methods are currently being applied in many areas such as analytical chemistry, biochemical engineering, biochemistry, and biological applications, accessibility and usability of microfluidics ...
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