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This paper studies the analysis and implementation of intelligent information processing and fault diagnosis technology for distribution automation system. In the fault diagnosis is mainly considering the influence of uncertain information and coupling information, processing technology and multi-source information fusion of multi-source information mining depth based on data driven, and switch level,...
Tail bits in the RESET process influence the distribution of resistive parameters, and will dramatically decrease the uniformity in high electric stimuli region. In this study, such phenomena can be explained as non-uniform distribution of defects in the insulating layer and high defects density in the bottleneck region of conductive filament (CF). Then departing from defects' distribution function,...
Resistive Random Access Memory (RRAM) can be regarded as a promising candidate on the manipulation of both electrical and magnetic properties. There is a widespread concern about the electrical manipulation of magnetic properties in RRAM devices. In our work, Co/HfO2/Pt RRAM device with magnetic conductive filament (CF) is designed and fabricated. Then the anisotropic magnetoresistance (AMR) effect...
Software-Defined Networking (SDN) benefits from the development flexibility of control-plane applications (SDN-Apps), which allows third parties to make contributions. Such flexibility may expose SDN networks to security threats, since SDN-Apps may be malicious or prone to implementation bugs. These buggy/malicious SDN-Apps may contaminate the data plane with abnormal network actions, which may not...
To support voice calls vital to mobile users and carriers, 4G LTE cellular networks adopt two solutions: VoLTE (Voice Over LTE) and CSFB (Circuit-Switched FallBack). In this paper, we disclose that both schemes are harmful to mobile users from a security perspective. The adoption of the latest VoLTE allows an attacker to manipulate the radio resource states of the victim's device in a silent call...
In this paper, we aim to analyze the characteristics of voltage variation in power systems with random integration of Photovoltaic(PV) systems, investigate the dangerous PV placement pattern along a specific power system, and search for the optimal control scheme for voltage regulation in such system. We conducted the investigation of voltage variation on a radial distribution circuit with a random...
LTE-Advanced uses carrier aggregation (CA) of multiple component carriers (CCs) to achieve high-bandwidth transmission. To fulfill such technology, the novel carrier-aggregated modulator structure is proposed. In this work, the carrier-aggregated modulator is implemented in 0.18 µm CMOS technology and tested with two 10 MHz LTE-Advanced Release 10 signals to demonstrate the feasibility of the proposed...
The steady-state of the dual-bridge dc/dc resonant converter with a generalized series-parallel resonant tank is analyzed with the Fourier Series Analysis Approach in this paper. Switch stresses, soft-switching conditions can be identified from the analysis results. With a LCL type dual-bridge resonant converter as an example, the analysis results is applied to the converter design. Evaluation of...
A single-chip WiMAX RF front-end MMIC using GaAs Bi-FET process of WIN semiconductor corporation is presented. The MMIC integrates an HBT power amplifier, an E-mode pHEMT low-noise amplifier, and a D-mode pHEMT antenna switch. On-chip thermal and electrical isolation structures mitigate the interference problem from high-power devices. The MMIC delivers 24 dBm linear power of 64QAM 802.16e signal...
Carrier aggregation technique combines multiple narrow band channels to achieve a wide bandwidth for highspeed data communication. The proposed router switch architecture reduces the circuit complexity while maintaining the flexibility to meet the requirement of carrier aggregation systems. In this work, two router switch ICs are implemented in 0.18μm CMOS technology to provide dynamic RF paths for...
This paper presents design and linearization techniques for a highly efficient but nonlinear Class-E power amplifier (PA) applied to a dual-mode RF transmitter for W-CDMA/WiMAX systems. At first, a Class-E PA design is carried out for dual-band operation based on the proposed modified Class-E condition. Then, the envelope tracking and digital predistortion techniques are applied to linearize the Class-E...
This paper presents design and linearization techniques for a highly efficient, but nonlinear Class-E power amplifier (PA) applied to linear RF transmitters. To achieve maximum efficiency for Class-E PA operating above gigahertz frequencies, the proposed design theory modifies the classic Class-E condition and considers switch-on and switch-off resistances in deriving the analytical solution. For...
Although TinyOS has been regarded as the defacto standard for WSN (Wireless Sensor Network) applications, its simple task scheduling mechanism became a great obstacle to WSN applications. This paper, from two directions (one based on cooperative, the other based on preemptive), presented a variety of scheduling algorithms and their application in TinyOS. And their characters and advantage were discussed...
The stabilization problem is studied for the networked control systems with time-varying delay that is smaller than one sampling period. State feedback controllers are considered and a new switched system model is proposed to describe the resulting closed-loop NCS as a discrete-time switched system. Criteria of exponential stability for the closed-loop NCS and design procedures for the stabilizing...
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