Browsing Bildiri Koleksiyonu by Issue Date
Now showing items 1-20 of 188
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On the performance of subcarrier allocation techniques for multiuser OFDM cognitive networks with reconfigurable antennas
(Institute of Electrical and Electronics Engineers Inc., 2014)Reconfigurable antennas (RA) have been viewed as a hardware-efficient alternative solution to multiple-input multiple-output systems whereby network users can vary the antenna radiation patterns using a single antenna ... -
Clipping noise mitigation using partial transmit sequence for optical OFDM systems
(Institute of Electrical and Electronics Engineers Inc., 2014)Orthogonal frequency division multiplexing (OFDM) is a promising technology to achieve higher data rates in optical wireless communication (OWC) systems. Unlike single carrier techniques, OFDM can easily handle inter-symbol ... -
Secure communication in frequency selective channels with fade-avoiding subchannel usage
(IEEE Computer Society, 2014)The random nature of fading channels is an enabling factor for achieving secrecy against eavesdropping. By considering the channel frequency selectivity, we propose an adaptive transmission scheme in which the faded ... -
Abused android permissions by advertising networks
(Institute of Electrical and Electronics Engineers Inc., 2014)Android is the leading mobile operating system for smart phone and mobile tablet platforms. Since these mobile devices contain personal and sensitive data, security is a big challenge for them. Even though various security ... -
A comparative review on the wireless implantable medical devices privacy and security
(Institute of Electrical and Electronics Engineers, 2014)Nowadays wireless communication is playing a vital role in implantable medical devices (IMDs) on health-care applications. It has many advantages in remote health monitoring, treatment and prediction for critical cases. ... -
Space-varying blur kernel estimation and image deblurring
(SPIE, 2014)In recent years, we have seen highly successful blind image deblurring algorithms that can even handle large motion blurs. Most of these algorithms assume that the entire image is blurred with a single blur kernel. This ... -
Super-resolution restoration of motion blurred images
(SPIE, 2014)In this paper, we investigate super-resolution image restoration from multiple images, which are possibly degraded with large motion blur. The blur kernel for each input image is separately estimated. This is unlike many ... -
Numerical characterization of in vivo wireless communication channels
(Institute of Electrical and Electronics Engineers Inc., 2014)In this paper, we numerically investigated the in vivo wireless communication channel for human male torso at 915 MHz. Results show that in vivo channel is different than the classical communication channel and location ... -
Mobility performance of macrocell-assisted small cells in Manhattan model
(Institute of Electrical and Electronics Engineers Inc., 2014)Macrocell-assisted small cell concepts, such as "Phantom cell concept" and "soft cell concept", have been proposed previously for interference management, flexible cell planning, and energy saving in dense small cell ... -
Game theoretical partially overlapping filtered multi-tones in cognitive heterogeneous networks
(Institute of Electrical and Electronics Engineers Inc., 2014)Partially overlapping tones have recently been paid attention to by the researchers in cognitive heterogeneous networks (HetNets). In this paper, we introduce partial overlapping in the filtered multi-tones instead of full ... -
Frequency division multiplexed imaging: A Texas Instruments DMD implementation
(SPIE-Int Soc Optical Engineering SPIE, 2014)Recently we proposed frequency division multiplexed imaging (FDMI), which allows capturing multiple images in a single shot through spatial modulation and frequency domain filtering. This is achieved by spatially modulating ... -
Cyclic feature concealing cp selection for physical layer security
(Institute of Electrical and Electronics Engineers Inc., 2014)Cyclic prefix (CP) utilizing techniques such as orthogonal frequency division multiplexing (OFDM) and singlecarrier frequency domain equalization (SC-FDE) offer significant advantages in equalizing the effect of time ... -
Experimental characterization of in vivo radio channel at MICS and ISM Bands
(Electromagnetics Academy, 2015)This paper presents an experimental study for the propagation losses and wave attenuation inside human body for implanted antenna at different body organs. The experimental study discusses the commonly used frequency bands: ... -
A European view on the next generation optical wireless communication standard
(Institute of Electrical and Electronics Engineers, 2015)Optical wireless technology uses light for mobile communications. The idea is to simultaneously combine the illumination provided by modern high-power light-emitting diodes (LEDs) with high-speed wireless communications. ... -
On directional modulation: An analysis of transmission scheme with multiple directions
(Institute of Electrical and Electronics Engineers, 2015)Increasing the spectral efficiency was always the motivation behind the evolution of wireless communication systems. Also, due to the widespread usage of wireless systems, securing the transmitted data rises as a main ... -
Design of high-frequency broadband CMUT arrays
(Institute of Electrical and Electronics Engineers, 2015)In this work we demonstrate a high-frequency (29-MHz) broadband (100% FBW) CMUT 1D array. The devices are fabricated using anodic bonding with only three photolithography steps. We also discuss the design guidelines for ... -
Fabrication of capacitive micromachined ultrasonic transducers with through-glass-via interconnects
(Institute of Electrical and Electronics Engineers, 2015)This paper introduces a novel fabrication method for capacitive micromachined ultrasonic transducer (CMUT) arrays amenable to 3D integration. The work demonstrates that MEMS structures can be directly built on a through-glass-via ... -
IEEE 802.22 ve 802.11 af sistemlerinin birlikte varolabilmeleri için meşgul tonu gerçeklemesi
(Institute of Electrical and Electronics Engineers, 2015)Bu bildiride, IEEE 802.22 ve IEEE 802.lIaf sistemlerinin TV beyaz boşlugunda birlikte varolabilmeleri için meşgul ton tabanlı yeni bir algoritma önerilmiştir. Önceki meşgul ton tabanlı çalışmalardan farklı olarak 802.11af ... -
Optimization of aerial base station location in LAP for disaster situations
(Institute of Electrical and Electronics Engineers, 2015)Aerial telecommunication platforms will be a part of the future communication networks. In this paper, we address the issue of optimizing the location of Aerial Base Stations (ABS) in Low Altitude Platforms (LAP) to minimize ... -
Physical layer security for wireless implantable medical devices
(Institute of Electrical and Electronics Engineers, 2015)Wireless communications are increasingly important in health-care applications, particularly in those that use implantable medical devices (IMDs). Such systems have many advantages in providing remote healthcare in terms ...
