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We demonstrate a silicon photonics coherent transceiver in a ball-grid-array package. It can be handled like a conventional surface-mount-technology component, surviving pick-and-place and 260° C reflow. It saves cost, size and provides enhanced thermals and bandwidth.
The recent enhancements in Boolean Satisfiability solving has made SAT solvers a core engine for many real world applications especially for Automatic Test Pattern Generation (ATPG) in digital circuits. The majority of solving time is spent on iteratively propagating variable assignments that are inferred by decisions, so the Unit propagation (UP) is the most significant part in the Satisfiability...
Two different methods are envisioned for nanotechnology to build nanostructured systems, components, and materials: One method is named the “top-down” approach and the other method is named the “bottom-up” approach [1,2]. In the top-down approach the idea is to miniaturize the macroscopic structures, components, and systems towards a nanoscale of the same. In the bottom-up approach the atoms...
Two different methods are envisioned to build nanostructured systems, components and materials: One method is the “top-down” approach, and the other is the “bottom-up” approach [1,2]. In the top-down approach, the idea is to miniaturize macroscopic structures, components and systems towards a nanoscale size. In the bottom-up approach, the atoms and molecules constituting the building blocks...
This book is a result of the research and educational activities of a group of outstanding scientists worldwide who have authored the chapters of this book dealing with the behavior of nanoscale building blocks. It contains a variety of subjects covering computational, dry and wet nanotechnology. The state-of-the-art subject matters presented here provide the reader with the latest developments on...
In this paper, the dynamic model of a Shape Memory Alloy (SMA) Flexinol™ actuator wire is developed and simulated. The model is nonlinear with hysteresis behavior and its parameters are obtained easily using the manufacturer data sheet. The developed model can be served to investigate the SMA behavior and to design control applications. The simulation results using MATLAB/SIMULINK verified the dynamic...
This paper proposes a new approach for enhancing link quality between relay node (RN) and base station (BS). Two types of antennas were proposed at the relay, the first type is the directional antenna, which is directed toward the base station to improve the relay link quality, thereby reducing outage probability by increasing relay link capacity. The second type is the omni-directional antenna, which...
Resource allocation management is one of the effective factors of WiMAX base station performance. Various goals could be achieved when the resource allocation scheme exploits in the right direction. However, the assessment of the resource allocation algorithms lacks to a uniform performance metrics. Where, most of the researches are trying to show authors perspectives in the finding results to show...
Burst allocation is one of the important parameter that affects the performance of the Mobile WiMAX systems. The burst allocation algorithm is responsible about calculating the appropriate dimensions and location of each user's data to construct the bursts within the downlink subframe in term of the number of slots per user. Resource wastage in the form of unused and unallocated slots is a common...
In order to meet the increasing demand and stringent design requirements for coverage expansion, throughput and capacity enhancement relay Node (RNs) has been considered as a promising solution to LTE-A Point-to-Multi-Point (PMP) networks. In this paper two scenarios are proposed, at the first scenario this work introduced the performance analysis of two-way Multiuser system of half duplex to AF (Amplify...
Piezoelectric material is used as an active material to convert vibration energy into electrical output and so called piezoelectric energy harvesting. The harvester's dynamic model depends on several parameters such as physical dimensions, geometrical structure, mechanical and electrical properties of the piezoelectric material. The development of theoretical model for analysis and simulation is a...
Ultra low power microelectronic devices such as wireless sensor nodes can be self powered using piezoelectric energy harvesting systems. Piezoelectric energy harvesting is the technology to convert wasted vibration energy to an electrical energy output. This paper highlights the design considerations for piezoelectric energy harvesting (PEH) systems such as: material selection, resonant frequency,...
The paper deals with the special brushless synchronous electrical machine (SBSM) working with an extensive variable load. It's exciting systems usually keep cosφ ≈ 1. Among them are unmanned deep-well oil pumps drives, wind renewable energy SBSM, etc. The SBSMs usually works in harsh climate conditions, where thyristor or IGBT exciting systems are not reliable (except diodes). Oil field drives are...
In this paper, a second order transfer function of a single-axis PZT nanopositioner stage (P-752.21C) is identified around an operating point. The nonlinearity due to the hysteresis is modeled using look-up tables. The validation of the complete model is achieved experimentally. Two control approaches are developed. The former is a PI controller where the control parameters are tuned using Ziegler-Nichols...
In this paper, the finite difference time domain (FDTD) method is employed to analyze a novel compact DRA antenna which has small dimension (substrate size is 30×45×1.27 mm^3 and DRA size is 10×10×2.5 mm^3) is proposed for Ultra-Wideband applications. Every Geometrical parameter has different effects on the overall performances of the proposed antenna and the optimal dimensions can be achieved by...
This paper presents a VGA 1/13-inch system-on-chip (SoC), primarily targeted for the consumer camera mobile phone market. In this market low cost, ease of product integration, low module height, and low light image quality are important features. The SoC simplifies integration of the sensor into the final product by providing camera functions such as: automatic exposure control, automatic white balance,...
This paper presents the robust of Sliding Mode Controller according to parameters change and worst signal noise. Mathematical procedure for calculating the values of the gains of Sliding Mode Controller (SMC) and equation of Sliding Mode (slopes)parameters are determined. The proposed control scheme is derived, simulated and results obtained SMC by using MATLAB Version 7.10.0.499 (R2010a) Simulink,...
Camera-based surveillance is an important technology to monitor people, assets and places, for the applications of increasing physical security. Access to information services whilst on the move is becoming increasingly prevalent within transport systems. This paper examines motorway vehicles equipped with wireless communication nodes to obtain images from the cameras distributed along a motorway...
In this paper a new architecture to calculate Ln function based on data-oriented theory is introduced. Because of using proper and huge amount of data in modeling, implementing of this type of models causes less calculation complexity. Data-oriented architecture is made of considering memory and small calculation unit together. Proposed method calculates Ln function faster than common methods.
Developing correct and complete real-world software applications is a difficult task in terms of the number and flexibility of the essential components and their interrelationship. As the field of agent-based computing matures, the requirements of well-founded techniques and methodology for such systems modeling will increased. This paper used integration of two well known modeling techniques, X-machines...
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