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Tag Archive: IEEE Ns2 Projects

DSP-Enabled Flexible ROADMs without Optical Filters and O-E-O Conversions

Utilising Hilbert-pair-based digital filtering, intensity modulation and passive optical coupling, optical filter- and O-E-O conversion-free ROADMs with excellent flexibility, colorlessness, gridlessness, contentionlessness, adaptability and transparency to physical-layer network characteristics are proposed and evaluated, for the first time, which offer DSP-enabled dynamic add/drop operations at wavelength, sub-wavelength and orthogonal sub-band levels. Extensive numerical simulations are undertaken to explore […]

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Supporting multi data stores applications in cloud environments

The production of huge amount of data and the emergence of cloud computing have introduced new requirements for data management. Many applications need to interact with several heterogeneous data stores depending on the type of data they have to manage: traditional data types, documents, graph data from social networks, simple key-value data, etc. Interacting with heterogeneous […]

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Adaptive video quality control scheme to improve QoE of MPEG DASH

Most of previous video quality control schemes for DASH lead to frequent change of video quality due to the varying network condition. In this paper, we propose a video quality control scheme based on network and playback buffer status to provide seamless and smooth streaming service over DASH.

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Galvanically isolated quasi-Z-source DC-DC converters with combined energy transfer for renewable energy sources integration

This paper presents a novel class of quasi-Z-source galvanically isolated DC-DC converters intended for the integration of low voltage renewable energy sources into a DC microgrid. These converters combine characteristics of the transformer based and the inductor based impedance-source galvanically isolated DC-DC converters. They feature the continuous input current essential for photovoltaic applications. Two types […]

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Demystifying the Clouds: Harnessing Resource Utilization Models for Cost Effective Infrastructure Alternatives

Deployment of Service Oriented Applications (SOAs) to public infrastructure-as-a-service (IaaS) clouds presents challenges to system analysts. Public clouds offer an increasing array of virtual machine types with qualitatively defined CPU, disk, and network I/O capabilities. Determining cost effective application deployments requires selecting both the quantity and type of virtual machine (VM) resources for hosting SOA workloads of […]

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Adaptive Robust Online Constructive Fuzzy Control of a Complex Surface Vehicle System

In this paper, a novel adaptive robust online constructive fuzzy control (AR-OCFC) scheme, employing an online constructive fuzzy approximator (OCFA), to deal with tracking surface vehicles with uncertainties and unknown disturbances is proposed. Significant contributions of this paper are as follows: 1) unlike previous self-organizing fuzzy neural networks, the OCFA employs decoupled distance measure to dynamically […]

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Distributed Coordination of Electric Vehicles Providing V2G Services

The aim of this paper is to propose a distributed electric vehicle (EV) coordination management which exploits the potentials of the bidirectional power flow between the grid and the EV. In the literature, the proposed distributed price-based EV coordination mechanisms aiming to achieve a valley-filling concept consider electric vehicles as mere manageable loads, which are […]

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Transition profile control for broadband visible supercontinuum generation in tapered PCF

Tapered photonic crystal fibers with different transition profiles were designed and fabricated to control the visible dispersive wave generation process, and broadband visible supercontinuum (350–700 nm) was achieved.

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Audit-Free Cloud Storage via Deniable Attribute-based Encryption

Cloud storage services have become increasingly popular. Because of the importance of privacy, many cloud storage encryption schemes have been proposed to protect data from those who do not have access. All such schemes assumed that cloud storage providers are safe and cannot be hacked; however, in practice, some authorities (i.e., coercers) may force cloud […]

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I-sieve: An inline high performance deduplication system used in cloud storage

Data deduplication is an emerging and widely employed method for current storage systems. As this technology is gradually applied in inline scenarios such as with virtual machines and cloud storage systems, this study proposes a novel deduplication architecture called I-sieve. The goal of I-sieve is to realize a high performance data sieve system based on […]

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