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Tag Archive: Ns2 simulator Projects

Thwarting Intelligent Malicious Behaviors in Cooperative Spectrum Sensing

Sensing falsification is a key security threat in cooperative spectrum sensing in cognitive radionetworks. Intelligent malicious users (IMUs) adjust their malicious behaviors according to their objectives and the network’s defense schemes. Without long-term collection of information on users’ reputation, the existing schemes fail to thwart such malicious behaviors. In this paper, we construct a joint […]

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A Systematic Power-Quality Assessment and Harmonic Filter Design Methodology for Variable-Frequency Drive Application in Marine Vessels

In maritime industry, high fuel costs encourage use of variable-frequency drives (VFDs) for energy-saving applications. However, introduction of such nonlinear loads in the vessel’s power distributionnetwork induces harmonics, which can lead to potential risks if are not predicted and controlled. In this paper, a systematic power-quality assessment and monitoring methodology is proposed to calculate VFD contribution […]

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An Improved Phase Correlation Method Based on 2-D Plane Fitting and the Maximum Kernel Density Estimator

In this letter, an improved phase correlation (PC) method based on 2-D plane fitting and the maximum kernel density estimator (MKDE) is proposed, which combines the idea of Stone’s method and robust estimator MKDE. The proposed PC method first utilizes a vector filter to minimize the noise errors of the phase angle matrix and then […]

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A novel 3D thermal impedance model for high power modules considering multi-layer thermal coupling and different heating/cooling conditions

Thermal management of power electronic devices is essential for reliable performance especially at high power levels. One of the most important activities in the thermal management and reliability improvement is acquiring the temperature information in critical points of the power module. However accurate temperature estimation either vertically or horizontally inside the power devices is still […]

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Ultrafast autonomous solid state circuit breakers for shipboard DC power distribution

Short circuit protection remains one of the major technical barriers in DC power systems. This paper introduces a new concept of ultrafast autonomous SSCBs. The new SSCB comprises one or more normally-on WBG transistor as the main static switch and a fast-starting isolated DC/DC converter as the protection driver. It detects short circuit faults by […]

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Next Generation Dry Film AC Filter Capacitor Eliminates Catastrophic Failures

AC filter capacitors are a limiting factor for reliability of power conversion systems in network power and alternative energy applications. Conventional capacitors with pressure interrupters or fuses often fail catastrophically with significant collateral damage. A next generation annular form factor dry-film capacitor has been developed to eliminate catastrophic failures using proprietary end connection and segmentation technology. By […]

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Test of REBCO HTS Magnet of Magnetic Bearing for Flywheel Storage System in Solar Power System

A flywheel energy storage system (FESS) is a power storage device that stores electrical power by rotating energy. The FESS we develop has a large capacity to charge electrical power from a solar power system and other renewable generators and discharge the power to power networks. A superconducting magnetic bearing developed by Furukawa Electric and Railway […]

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Energy-Efficient Dynamic Packet Downloading for Cloud-Assisted Medical IoT Platforms

This paper proposes a polynomial-time algorithm for energy-efficient dynamic packet downloading from medical cloud storage to medical internet-of-things (IoT) devices. The medical cloud can distribute its own medical data to medical IoT devices via access points. Therefore, network disconnection can happen between the medical cloud and medical IoT devices when power/energy management in each access point is […]

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Plasma Ignition Response for LOVA Gun Propellant at Low Loading Densities

The ignition of LOVA gun propellants at low loading densities is of interest for future gun systems with insensitive modular charges. The ignition system in conventional propellant systems is traditionally optimized for high loading densities. There is a need to be able to control the ignition for the envelop of the system, to reduce unburnt […]

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Spatial Reuse in Dense Wireless Areas: A Cross-layer Optimization Approach via ADMM

This paper introduces an efficient method for communication resource use in dense wireless areas where all nodes must communicate with a common destination node. The proposed method groups nodes based on their distance from the destination and creates a structured multi-hop configuration in which each group can relay its neighbor’s data. The large number of […]

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