Browsing by Subject "Bandwidth"
Now showing items 120 of 62

Article
Adaptive congestion protocol: A congestion control protocol with learning capability
(2007)There is strong evidence that the current implementation of TCP will perform poorly in future highspeed networks. To address this problem many congestion control protocols have been proposed in literature which, however, ...

Conference Object
Adaptive feedback algorithm for internet video streaming based on fuzzy rate control
(2007)It is beyond any doubt that the unpredictable nature of the today's Internet has tremendous impact on the transmission of video streams. With respect to the realtime nature of video streaming, unpredictable bandwidth, ...

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Adaptive realtime HEVC encoding of emergency scenery video
(Institute of Electrical and Electronics Engineers Inc., 2015)This paper proposes the use of an adaptive HEVC encoding framework for the wireless transmission of realtime emergency scenery video. The goal of the proposed approach is to adapt HEVC encoding methods and parameters so ...

Conference Object
Addressing network survivability issues by finding the Kbest paths through a trellis graph
(IEEE, 1997)Due to the increasing reliance of our society on the timely and reliable transfer of large quantities of information (such as voice, data, and video) across high speed communication networks, it is becoming important for ...

Article
Aggregated bandwidth allocation: Investigation of performance of classical constrained and genetic algorithm based optimisation techniques
(2002)We consider a high speed integrated services network, and investigate compare and contrast the performance of two algorithms for solving the Aggregated Bandwidth Allocation (BA) problem. The algorithms we focus our attention ...

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Bandwidth Allocation for Virtual Paths (BAVP): Investigation of performance of classical constrained and genetic algorithm based optimization techniques
(2000)We investigate the performance of a classical constrained optimization (CCO) algorithm and a constrained optimization Genetic Algorithm (GA) for solving the Bandwidth Allocation for Virtual Paths (BAVP) problem. We compare ...

Article
Bandwidth and Directivity Enhancement of Loop Antenna by Nonperiodic Distribution of MuNegative Metamaterial Unit Cells
(2016)The theory, design, analysis, and verification of a wideband and unidirectional loop antenna loaded with munegative (MNG) metamaterial unit cells is presented. It is shown that by nonperiodic positioning of MNG unit cells ...

Conference Object
Bandwidth and directivity enhancement of metamaterialloaded loop antennas for microwave imaging applications
(Institute of Electrical and Electronics Engineers Inc., 2017)Compact, wideband and unidirectional loop antennas are presented, that are based on a conventional planar loop antenna that is loaded in a munegative (MNG) fashion with series capacitors, enabling a muzero (MZR) resonance ...

Conference Object
A broadband 1:4 Series power divider using metamaterial phaseshifting lines
(2005)A metamaterial 1:4 series power divider that provides equal power split to all four output ports over a large bandwidth Is presented. The divider comprises four nonradiating metamaterial lines In series that can each Incur ...

Conference Object
A broadband balun using metamaterial phaseshifting lines
(2005)A 3port device that converts a singleended input to a differential output over a large bandwidth is presented. The balun comprises a Wilkinson divider, followed by a +90° negativerefractiveindex (NRI) metamaterial (MM) ...

Article
A broadband series power divider using zerodegree metamaterial phaseshifting lines
(2005)A metamaterial 1:4 series power divider that provides equal power split to all four output ports over a large bandwidth is presented, which can be extended to an arbitrary number of output ports. The divider comprises four ...

Article
A broadband Wilkinson balun using microstrip metamaterial lines
(2005)A metamaterial balun that converts a singleended input to a differential output over a large bandwidth is presented. The device also exhibits excellent return loss, isolation, and through characteristics over the same ...

Article
A compact and lowprofile metamaterial ring antenna with vertical polarization
(2005)A compact (λ 0/11 footprint) and lowprofile (λ 0/28 height) metamaterial ring antenna is proposed using two metamaterial unit cells. Each constituent unit cell consists of negativerefractiveindex (NRI) microstrip ...

Article
Compact cpwfed planar monopole antenna with wide circular polarization bandwidth
(2013)The design and implementation of a coplanar waveguidefed planar monopole antenna with circular polarization and broadband operation is presented. The antenna operates in the Industrial, Scientific, and Medical (ISM) and ...

Conference Object
A compact crossover using NRITL metamaterial lines
(2012)A compact NRITL metamaterial branchline crossover is presented that has an area of λ/36 × λ/12, and is a factor of 81 times smaller than its analogous transmissionline counterpart. Circuit simulations reveal that it ...

Article
Compact linear lead/lag metamaterial phase shifters for broadband applications
(2003)A compact onedimensional phase shifter is proposed using alternating sections of negative refractive index (NRI) metamaterials and printed transmission lines (TL). The NRI metamaterial sections consist of lumped element ...

Conference Object
A compact lowprofile highimpedance surface for use as an antenna ground plane
(2011)A compact and lowprofile highimpedance surface is proposed which offers a significantly smaller footprint without affecting the usable reflection phase bandwidth of the structure. The unit cell of the proposed surface ...

Article
Compact Wideband Loop Antenna Partially Loaded With MuNegative Metamaterial Unit Cells for Directivity Enhancement
(2016)A wideband and unidirectional loop antenna partially loaded with munegative (MNG) metamaterial unit cells is presented. To reduce the electrical size of the antenna, its first resonance is formed by capacitively loading ...

Article
Complexvalued tapers
(2005)The spectral estimation method based on the average of short, tapered periodograms is reexamined. The bias of such estimators is typically O(1/b2), where b is the length of the short blocks. Much of the current researeh ...