Browsing Department of Electrical and Electronics Engineering by Title
Now showing items 120 of 980

1/f Noise characteristics of SEJ YBaCuO RfSQUIDs on LaAlO3 substrate and the step structure, film, and temperature dependence
(IEEE, 200103)Step edge junction (SEJ) rfSQUID magnetometers and gradiometers were fabricated using PLD YEaCu0 films on LaA10,(100) and SrTi0,(100) substrates. Effects of different step structure and the film properties on the yield, ... 
A 2D orientationadaptive prediction filter in lifting structures for image coding
(IEEE, 200601)Liftingstyle implementations of wavelets are widely used in image coders. A twodimensional (2D) edge adaptive lifting structure, which is similar to Daubechies 5/3 wavelet, is presented. The 2D prediction filter predicts ... 
3D Motion Estimation and Wireframe Adaptation Including Photometric Effects for ModelBased Coding of Facial Image Sequences
(IEEE, 199406)We propose a novel formulation where 3D global and local motion estimation and the adaptation of a generic wireframe model to a particular speaker are considered simultaneously within an optical flow based framework ... 
3D motion estimation of rigid objects for video coding applications using an improved iterative version of the Ematrix method
(IEEE, 199802)As an alternative to current twodimensional (2D) motion models, a robust threedimensional (3D) motion estimation method is proposed to be utilized in objectbased video coding applications. Since the popular Ematrix ... 
3D Model compression using ConnectivityGuided Adaptive Wavelet Transform built into 2D SPIHT
(Elsevier, 201001)ConnectivityGuided Adaptive Wavelet Transform based mesh compression framework is proposed. The transformation uses the connectivity information of the 3D model to exploit the interpixel correlations. Orthographic ... 
45GHz BandwidthEfficiency ResonantCavityEnhanced ITOSchottky Photodiodes
(IEEE, 200107)Highspeed Schottky photodiodes suffer from low efficiency mainly due to the thin absorption layers and the semitransparent Schottkycontact metals. We have designed, fabricated and characterized highspeed and ... 
Ab initio study of neutral (TiO2)n clusters and their interactions with water and transition metal atoms
(IOP Publishing, 20120704)We have systematically investigated the growth behavior and stability of small stoichiometric (TiO2)n (n = 1–10) clusters as well as their structural, electronic and magnetic properties by using the firstprinciples plane ... 
Absolute Temperature Monitoring Using RF Radiometry in the MRI Scanner
(IEEE, 200611)Temperature detection using microwave radiometry has proven value for noninvasively measuring the absolute temperature of tissues inside the body. However, current clinical radiometers operate in the gigahertz range, which ... 
Accelerated PhaseCycled SSFP Imaging With Compressed Sensing
(IEEE, 201501)Balanced steadystate free precession (SSFP) imaging suffers from irrecoverable signal losses, known as banding artifacts, in regions of large B0 field inhomogeneity. A common solution is to acquire multiple phasecycled ... 
Accumulated Gouy phase shift in Gaussian beam propagation through firstorder optical systems
(OSA Publishing, 199709)We define the accumulated Gouy phase shift as the onaxis phase accumulated by a Gaussian beam in passing through an optical system, in excess of the phase accumulated by a plane wave. We give an expression for the accumulated ... 
Accurate Positioning in UltraWideband Systems
(Institute of Electrical and Electronics Engineers, 201104)Accurate positioning systems can be realized via ultrawideband signals due to their high time resolution. In this article, position estimation is studied for UWB systems. After a brief introduction to UWB signals and their ... 
Accurate Simulation of Reflector Antennas by the Complex SourceDual Series Approach
(IEEE, 199508)The radiation from circular cylindrical reflector antennas is treated in an accurate manner for both polarizations. The problem is first formulated in terms of the dual series equations and then is regularized by the ... 
Accurate Solutions of Extremely Large IntegralEquation Problems in Computational Electromagnetics
(IEEE, 201302)Accurate simulations of reallife electromagnetics problems with integral equations require the solution of dense matrix equations involving millions of unknowns. Solutions of these extremely large problems cannot be ... 
Achievable Rates for Noisy Channels with Synchronization Errors
(IEEE, 201411)We develop several lower bounds on the capacity of binary input symmetric output channels with synchronization errors, which also suffer from other types of impairments such as substitutions, erasures, additive white ... 
Achieving Delay Diversity in Asynchronous Underwater Acoustic (UWA) Cooperative Communication Systems
(IEEE, 201403)In cooperative UWA systems, due to the low speed of sound, a node can experience significant time delays among the signals received from geographically separated nodes. One way to combat the asynchronism issues is to ... 
Adaptive methods for dithering color images
(IEEE, 199707)Most color image printing and display devices do not have the capability of reproducing true color images. A common remedy is the use of dithering techniques that take advantage of the lower sensitivity of the eye to spatial ... 
Adaptive mixture methods based on Bregman divergences
(Elsevier, 201301)We investigate adaptive mixture methods that linearly combine outputs of m constituent filters running in parallel to model a desired signal. We use Bregman divergences and obtain certain multiplicative updates to train ... 
Adaptive OFDM Modulation for Underwater Acoustic Communications: Design Considerations and Experimental Results
(IEEE, 201404)In this paper, we explore design aspects of adaptive modulation based on orthogonal frequencydivision multiplexing (OFDM) for underwater acoustic (UWA) communications, and study its performance using realtime atsea ... 
Adaptive polyphase subband decomposition structures for image compression
(IEEE, 200010)Subband decomposition techniques have been extensively used for data coding and analysis. In most filter banks, the goal is to obtain subsampled signals corresponding to different spectral regions of the original data. ... 
Adaptive robust sampleddata control of a class of systems under structured perturbations
(IEEE, 199311)Robust adaptive sampleddata control of a class of linear systems under structured perturbations is considered. The controller is a timevarying statefeedback law having a fixed structure, containing an adjustable ...