Browsing by Keywords "Bandwidth"
Now showing items 21-40 of 74
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Distributed construction and maintenance of bandwidth-efficient bluetooth scatternets
(IEEE, 2005-05)Bluetooth networks can be constructed as piconets or scatternets depending on the number of nodes in the network. Although piconet construction is a well-defined process specified in Bluetooth standards, scatternet ... -
Durağan olmayan çok bileşenli boğucu sinyaller için yeni bir uyarlanır karışma çıkarıcı analizi
(IEEE, 2005)A novel adaptive short-time Fourier transform (STFT) implementation for the analysis of non-stationary multi-component jammer signals is introduced. The proposed time-frequency distribution is the fusion of optimum STFTs ... -
An efficient virtual topology design and traffic engineering scheme for IP/WDM networks
(Springer, 2007)We propose an online traffic engineering (TE) scheme for efficient routing of bandwidth guaranteed connections on a Multiprotocol label switching (MPLS)/wavelength division multiplexing (WDM) network with a traffic pattern ... -
Electrically-reconfigurable integrated photonic switches
(IEEE, 2004)We report remotely electrically reconfigurable photonic switches that intimately integrate waveguide electroabsorption modulators with surface-normal photodiodes, avoiding conventional electronics. These switches exhibit ... -
Energy efficient architecture for graph analytics accelerators
(IEEE, 2016-06)Specialized hardware accelerators can significantly improve the performance and power efficiency of compute systems. In this paper, we focus on hardware accelerators for graph analytics applications and propose a configurable ... -
Equivalence of linear canonical transform domains to fractional Fourier domains and the bicanonical width product: a generalization of the space-bandwidth product
(Optical Society of America, 2010-07-30)Linear canonical transforms (LCTs) form a three-parameter family of integral transforms with wide application in optics. We show that LCT domains correspond to scaled fractional Fourier domains and thus to scaled oblique ... -
Experimental verification of metamaterial based subwavelength microwave absorbers
(American Institute of Physics, 2010-10-29)We designed, implemented, and experimentally characterized electrically thin microwave absorbers by using the metamaterial concept. The absorbers consist of (i) a metal back plate and an artificial magnetic material layer; ... -
Exploiting data mining techniques for broadcasting data in mobile computing environments
(IEEE, 2002)Mobile computers can be equipped with wireless communication devices that enable users to access data services from any location. In wireless communication, the server-to-client (downlink) communication bandwidth is much ... -
Fabrication of high-speed resonant cavity enhanced schottky photodiodes
(Institute of Electrical and Electronics Engineers, 1997-05)We report the fabrication and testing of a GaAs-based high-speed resonant cavity enhanced (RCE) Schottky photodiode. The top-illuminated RCE detector is constructed by integrating a Schottky contact, a thin absorption ... -
Fast and accurate algorithm for the computation of complex linear canonical transforms
(Optical Society of America, 2010-08-05)A fast and accurate algorithm is developed for the numerical computation of the family of complex linear canonical transforms (CLCTs), which represent the input-output relationship of complex quadratic-phase systems. ... -
Fast and accurate algorithms for quadratic phase integrals in optics and signal processing
(SPIE, 2011)The class of two-dimensional non-separable linear canonical transforms is the most general family of linear canonical transforms, which are important in both signal/image processing and optics. Application areas include ... -
Fast and accurate computation of two-dimensional non-separable quadratic-phase integrals
(Optical Society of America, 2010-05-12)We report a fast and accurate algorithm for numerical computation of two-dimensional non-separable linear canonical transforms (2D-NS-LCTs). Also known as quadratic-phase integrals, this class of integral transforms ... -
Fundamental structure of Fresnel diffraction: Longitudinal uniformity with respect to fractional Fourier order
(Optical Society of America, 2011-12-24)Fresnel integrals corresponding to different distances can be interpreted as scaled fractional Fourier transformations observed on spherical reference surfaces. Transverse samples can be taken on these surfaces with ... -
Generalized time-bandwidth product optimal short-time fourier transformation
(IEEE, 2002-05)By extending the time-bandwidth product concept to fractional Fourier domains, a generalized time-bandwidth product (GTBP) is introduced. The GTBP provides a rotation independent measure for the support of the signals in ... -
High bandwidth-efficiency solar-blind AlGaN Schottky photodiodes with low dark current
(Pergamon Press, 2005-01)Al0.38Ga0.62N/GaN heterojunction solar-blind Schottky photodetectors with low dark current, high responsivity, and fast pulse response were demonstrated. A five-step microwave compatible fabrication process was utilized ... -
High-performance 1.55 μm resonant cavity enhanced photodetector
(IEEE, 2002)A high speed and high efficiency resonant cavity enhanced InGaAs based photodetector was demonstrated. A peak quantum efficiency of 66% was measured along with 31 GHz bandwidth with the device. The photoresponse was found ... -
High-performance ALGaN-based visible-blind resonant cavity enhanced Schottky photodiodes
(Materials Research Society, 2003-04)We have designed, fabricated and tested resonant cavity enhanced visible-blind AlGaN-based Schottky photodiodes. The bottom mirror of the resonant cavity was formed with a 20 pair AlN/AlGaN Bragg mirror. The devices were ... -
High-performance AlxGA1-xN-Based UV photodetectors for visible/solar-blind applications
(Bilkent University, 2004)High-performance detection of ultraviolet (UV) radiation is of great importance for a wide range of applications including flame sensing, environmental (ozone layer) monitoring, detection of biological/chemical ... -
High-performance solar-blind AlGaN photodetectors
(IEEE, 2004)High-performance aluminum gallium nitride (AlGaN)-based solar-blind (SB) photodetectors were demonstrated using different device structures. The Al x-Ga1-xN layers structure were grown by metalorganic chemical vapor ... -
High-performance solar-blind AlGaN Schottky photodiodes
(Materials Research Society, 2003)High-performance solar-blind AlGaN-based Schottky photodiodes have been demonstrated. The detectors were fabricated on MOCVD-grown AlGaN/GaN heterostructures using a microwave-compatible fabrication process. Current-voltage, ...
