Browsing Electrical & Electronics Engineering by Author "1"
Now showing items 1-20 of 294
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A 1GS/s, 9-bits DAC interleaved (2+1)-bit then 2-bit per cycle SAR ADC
El-Sawy, Salma; Tekin, Ahmet (Istanbul University, 2020-07)This paper presents a high speed Successive Approximation Register Analog to Digital Converter (SAR ADC) for low-noise low-power satellite transceiver applications. The system is a (2+1) then 2-bit per cycle SAR ADC of ... -
25th IFIP/IEEE conference on very large scale integration (VLSI-SoC 2017)
Elfadel, I. A. M.; Uğurdağ, Hasan Fatih (IEEE, 2018-02)The 25th IFIP/IEEE Conference on Very Large Scale Integration (VLSI-SoC 2017) was held between 23 and 25 October in the landmark Yas Viceroy Hotel, overlooking the Formula 1 Yas Marina racetrack in Yas Island, Abu Dhabi, ... -
3D neuromorphic wireless power transfer and energy transmission based synaptic plasticity
Gülbahar, Burhan (IEEE, 2019)Energy consumption combined with scalability and 3D architecture is a fundamental constraint for brain-inspired computing. Neuromorphic architectures including memristive, spintronic, and floating gate metal-oxide-semiconductors ... -
Achievable data rates and power allocation for frequency-selective fading relay channels with imperfect channel estimation
Ding, Y.; Uysal, Murat (Springer Science+Business Media, 2012-12)In this article, we investigate the information-theoretical performance of a cooperative orthogonal frequency division multiplexing (OFDM) system with imperfect channel estimation. Assuming the deployment of training-aided ... -
Adaptive bit loading for multi-relay cooperative orthogonal frequency division multiple with imperfect channel estimation
Amin, O.; Ikki, S. S.; Uysal, Murat (IEEE, 2012-08-14)In this study, the authors introduce an adaptive bit loading scheme for an amplify-and-forward orthogonal frequency division multiple cooperative system with relay selection. The proposed bit loading scheme maximises the ... -
Adaptive density control in heterogeneous wireless sensor networks with and without power management
Machado, R.; Ansari, N.; Wang, G.; Tekinay, Şirin (IEEE, 2010-04-30)The authors study the design of heterogeneous two-tier wireless sensor networks (WSNs), where one tier of nodes is more robust and computationally intensive than the other tier. The authors find the ratios of densities of ... -
An adaptive modulation scheme for coded free-space optical systems
Hariq, S. H.; Odabasioglu, N.; Uysal, Murat (IEEE, 2014)For very slowly-varying fading channels as in the case of atmospheric turbulence-induced fading, it is possible to reliably estimate the channel state information and send it back to the transmitter. The transmitter can ... -
Adaptive power loading for multi-relay OFDM regenerative networks with relay selection
Amin, O.; Uysal, Murat (IEEE, 2012-03)In this paper, we propose an adaptive power loading algorithm for an OFDM (orthogonal frequency division multiplexing)-based multi-relay regenerative network with relay selection. The proposed scheme is based on selecting ... -
Adaptive relay selection method for asynchronous amplify and forward cooperative communications
Celik, Y.; Odabasioglu, N.; Uysal, Murat (IEEE, 2016)In this paper, we propose a new adaptive relay selection method named as Adaptive Best Relay Assessment (ABRA) for cooperative communication with amplify and forward (AF) relaying. ABRA is based on two relay selection ... -
Advanced optical wireless communication systems
Uysal, Murat (Cambridge University Press, 2012)Optical wireless communications is a dynamic area of research and development. Combining fundamental theory with a broad overview, this book is an ideal reference for anyone working in the field, as well as a valuable guide ... -
Advances in broadband single-carrier transmission techniques: Theory and applications (ABSCTT 2012)
Muhaidat, S.; Uysal, Murat; Tsiftsis, T. A.; Dianati, M.; Abualhaol, I. (IEEE, 2012)The fourth-generation (4G) wireless technology is expected to provide a wide variety of new services including high quality multimedia, internet access and other high-data-rate wireless services. Moreover, 4G technology ... -
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 ... -
Analog clock tree synthesis
Güner, Gökhan (2014-01)Anahtarlamalı analog devrelerin (AAD) saat ağı tasarımı ciddi zaman gerektiren ve yongaların tekrar elden geçirilmesine sebep olabilecek hatalara açık, elle yapılan bir işlemdir. Bu probleme otomatik ya da yarı-otomatik ... -
Analysis of ALTO protocol over P2P networks
Kökten, Koray (2012-10)Currently, for distributed applications such as Peer-to-Peer (P2P) and Content Delivery Networks (CDNs), the most important challenge is to determine the optimal peer or node selection process, since it sometimes causes ... -
Analysis of asynchronous cognitive radio system with imperfect sensing and bursty primary user traffic
Ercan, Ali Özer (Springer Science+Business Media, 2016-03)This paper presents a theoretical analysis of the spectrum utilization levels in a cognitive radio system. We assume that the traffic of the primary network is bursty and asynchronous with the secondary network, which ... -
Analysis of field correlations in atmospheric optical MIMO systems
Baykal, Y.; Uysal, Murat (IEEE, 2014)In this paper, we evaluate the absolute field correlations for a free space optical (FSO) multiple-input multiple-output (MIMO) link operating in a turbulent atmosphere. Such knowledge is needed in heterodyne reception to ... -
An antenna for implanted device systems
Zincircioglu, Emircan; Pekdemir, İsmail; Rzayew, Rafiq; Ilıksu, Emre; Dede, Merve; İmeci, Ş. T.; Durak, T. (IEEE, 2017)In this study, we designed and simulated an embedded spiral-shaped microstrip patch antenna for medical biotelemetry applications. Important design parameters were studied to understand their effect on the antenna performance. ... -
Aperture averaging in multiple-input single-output free-space optical systems
Gökçe, M. C.; Baykal, Y.; Kamacıoğlu, C.; Uysal, Murat (SPIE, 2015-06)Multiple-input single-output systems are employed in free-space optical links to mitigate the degrading effects of atmospheric turbulence. We formulate the power scintillation as a function of transmitter and receiver ... -
Aperture averaging in multiple-input single-output free-space optical systems using partially coherent radial array beams
Gökçe, M. C.; Baykal, Y.; Uysal, Murat (The Optical Society, 2016-06)Multiple-input single-output (MISO) techniques are employed in free-space optical (FSO) links to mitigate the degrading effects of atmospheric turbulence. In this paper, for the MISO FSO system, a partially coherent radial ... -
Application-based scheduling for indoor femtocell networks
Mungan, Devin (2013-01)This thesis is concerned with designing a QoS-enabled, application-based scheduler for indoor femtocell networks. For this purpose, a novel scheduler is proposed which takes into account the quality of service (QoS) ...
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