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检索条件"主题词=Algorithm Design And Analysis"

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design and analysis of secure clustering algorithm for wireless sensors networks

Design and analysis of secure clustering algorithm for wirel...

引用

Chinese Control and Decision Conference, CCDC

作者： Xiangdong Hu Qinfang Wei Ping Cui Yunbo Zhu Dongqiang Cai Jie Zhang Automation Institute Chongqing University of Posts and Telecommunications 400065 China

Cluster formation of nodes in wireless sensor network is an effective approach and key technology to implement energy saving and flexible management. To improve security and efficiency of clustering network, a secure clustering model was proposed to identify and get rid of malicious nodes, to achieve cluster-range self-management and on-demand cluster maintenance based on the random and parallel cluster header election algorithm and pre-distributed key scheme, a integrated solution is built to reach efficient management, energy saving and secure information for wireless sensor network, the performance of this algorithm is analyzed and evaluated.

关键词： Wireless sensor networks Clustering algorithms algorithm design and analysis Wireless communication Security Nominations and elections Ad hoc networks

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Waveform design and Performance analysis of Ultra-Wideband (UWB) Pulse Based on Iterative algorithm

Waveform Design and Performance Analysis of Ultra-Wideband (...

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Asia-Pacific Conference on Environmental Electromagnetics (CEEM)

作者： Liu-lei Zhou Hong-bo Zhu Wireless Communication and EM Compatibility Key Laboratory Nanjing University of Posts and Telecommunications Nanjing China

ISBN: (纸本)1424401836

Pulse shaping is one of key research topics in the electromagnetic compatibility (EMC) between UWB devices and other wireless systems. A low-complexity pulse shaping technique using twice iterative algorithms is suggested to achieve a maximum allowable transmitted power under Federal Communications Commission (FCC) emission mask in UWB system. In addition, the performance of time hopping pulse position modulation (TH-PPM) UWB system using the proposed monocycle is analyzed under additive white Gaussian noise (AWGN) channel. Simulation results show that the BER performance of the proposed pulse is better than that of the other conventional pulses proposed before

关键词： algorithm design and analysis Performance analysis Ultra wideband technology Iterative algorithms AWGN Pulse shaping methods Electromagnetic compatibility FCC Pulse modulation Additive white noise

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Modeling, analysis, Simulation and design Optimization (Genetic algorithm) of dc-dc Converter for Uninterruptible Power Supply Applications

Modeling, Analysis, Simulation and Design Optimization (Gene...

引用

International Conference on Power Electronics and Drive Systems (PEDS)

作者： Choon-Keat Chew S. Rama Rao Kondapalli School of Electrical and Electronic Engineering Universiti Sains Islam Malaysia Nibong Tebal Pulau Penang Malaysia

This paper presents the computer modeling, analysis, simulation and design optimization of an efficient dc-dc converter with synchronous rectification, which is important in battery charge/discharge circuits in dc uninterruptible power supply (UPS) systems. Simulation results from the models are presented for the forward mode and the backup mode. The results are compared to those of the expected ideal converter operation to confirm the validity of the simulation models. An objective function of the converter efficiency in the forward mode is derived and presented. Genetic algorithm (GA) is used to perform a constrained optimization on the objective function and optimum results are presented. The resulting effects of GA parameters such as varying the population size and number of generations, and varying the amount of mutation and crossover fraction, are also presented. The computer modeling, analysis, simulation and design optimization (GA) are performed using software tools within the MATLAB/SIMULINK simulation environment.

关键词： algorithm design and analysis Analytical models design optimization Genetic algorithms DC-DC power converters Uninterruptible power systems Mathematical model Computational modeling Power system modeling Circuit simulation

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Iterative algorithm for the design of optimal FIR analysis/synthesis filters for overdecimated filter banks

Iterative algorithm for the design of optimal FIR analysis/s...

引用

IEEE International Symposium on Circuits and Systems (ISCAS)

作者： A. Tkacenko P.P. Vaidyanathan Department of Electrical Engineering California Institute of Technology Pasadena CA USA

Recently, much attention has been given to the design of signal-adapted filter banks, in which the filter banks are designed to optimize a particular objective function, i.e. coding gain or a multiresolution criterion, for a particular class of input signals. If we restrict the analysis/synthesis filters to satisfy an orthonormality or biorthogonality condition, but put no restrictions on filter orders, then often times it is known how to choose the filters optimally for the objectives mentioned above. However, such filters are often unrealizable infinite order filters. In this paper, we consider the design of optimal analysis/synthesis filters in which the only restriction is that they must be finite impulse response (FIR) filters. We focus here on minimizing the mean squared reconstruction error for overdecimated filter banks. An iterative method to alternately design the analysis and synthesis banks is presented in which the error is monotonic nonincreasing for each iteration. Simulation results provided show the merit of the proposed algorithm.

关键词： algorithm design and analysis Finite impulse response filter Filter bank Iterative algorithms Signal synthesis Signal design design optimization Signal resolution Iterative methods design methodology

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Stability analysis and filter design for LRED algorithm

Stability analysis and filter design for LRED algorithm

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American Control Conference (ACC)

作者： Chengnian Long Bin Zhao Xinping Guan Bo Yang Department of Electrical Engineering Yanshan University슠 Qinhuangdao China

ISBN: (纸本)0780390989

Loss ratio based random early detection (LRED) scheme has been recently proposed for improving the response and robustness of active queue management (AQM) in Internet routers. It measures the latest packet loss ratio periodically, and adjusts its packet loss probability around the measured value. Our goal is to identify the key factors that drive the effectiveness of this design. We present a stability analysis for the TCP/LRED delayed feedback system. Our analysis suggests that the stability of LRED scheme can be decoupled from TCP load N. Thus LRED scales well with a wide range of traffic conditions. Furthermore, based on the stability analysis, we propose a scalable algorithm both for TCP load N and for link capacity C. In the end, we study the packet loss ratio estimate scheme, which is a key factor of LRED, and present a full average loss (FAL) filter algorithm. Simulations validate that the proposed filter algorithm responds quickly to the change of traffic conditions and achieves a steady estimate in the presence of extremely short term flows.

关键词： Stability analysis algorithm design and analysis Loss measurement Traffic control Information filtering Information filters Robustness Internet Delay systems Feedback

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design and performance analysis of a dynamic hybrid scheduling algorithm for heterogeneous asymmetric environments

Design and performance analysis of a dynamic hybrid scheduli...

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International Symposium on Parallel and Distributed Processing (IPDPS)

作者： Navrati Saxena Kalyan Basu S.K. Das Department of Informatics and Telecom. University of Trento Trento Italy CReWMaN Laboratory Computer Science & Engineering Department University of Texas Arlington Arlington TX USA CReWMaN Lab Computer Science & Engineering Department University of Texas Arlington Arlington TX USA

Summary form only given. A hybrid scheduling is introduced that effectively combines broadcasting of more popular data (push data) and dissemination upon-request for less popular data (pull data), for asymmetric environments where the clients outnumber the servers having higher downlink communication (server to client) bandwidth than the uplink communication (client to server) bandwidth. We do not assume prior knowledge of the data access probability; in fact data access probabilities and thereby the cut-off-point to separate the push and the pull set are computed dynamically. In our scheme all the data items are assumed to be of variable length arranged in descending order of their access probabilities. The clients send their requests to the server, which queues them up for the pull items. At any instant of time, the item to be broadcast is designated applying a pure-push scheduling; whereas the item to be pulled is the one stored in the pull-queue, which has accumulated, so far, the highest number of pending requests with minimum service time requirement. The expected waiting time spent by a client in the hybrid schedule is evaluated analytically, and the cut-off point between push and pull items is chosen to minimize waiting time.

关键词： algorithm design and analysis Performance analysis Scheduling algorithm Broadcasting Bandwidth Delay effects Information retrieval Informatics Telecommunications Downlink

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design and analysis of a Splitting algorithm for a Multi-packet Reception ALOHA System

Design and Analysis of a Splitting Algorithm for a Multi-pac...

引用

IEEE Conference on Wireless Communications and Networking

作者： Jun-Bae Seo Victor C. M. Leung Department of Electrical and Computer Engineering University of British Columbia Vancouver BC Canada

In this paper we consider a centralized cross-layer splitting algorithm of a multi-packet reception slotted ALOHA system for contention resolution. In the algorithm, a base station estimates the number of backlogged mobile terminals by using a first-order auto-regressive (AR) model based on the number of packets successfully transmitted over previous contention resolution intervals (CRIs). Estimation errors are continuously corrected every slot during a CRI by exploiting multiple access interference (MAI). The retransmission probability broadcasted to MTs every slot is optimized to maximize the system throughput. The performance of this algorithm is analyzed in terms of throughput and delay, and verified by simulations. The algorithm shows around 60% throughput efficiency compared to the maximum achievable throughput.

关键词： algorithm design and analysis Throughput Signal processing algorithms Multiple access interference Broadcasting Multiaccess communication Intrusion detection Base stations Delay Ad hoc networks

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Balancing analysis and algorithm design for Mixed Model Assembly Lines

Balancing Analysis and Algorithm Design for Mixed Model Asse...

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2011 IEEE 18th International Conference on Industrial Engineering and Engineering Management(2011 IEEE 第十八届工业工程与工程管理国际会议 IEEM2011)

作者： Luo-ke HU Gui-xia HE Fang-ye SHAO Institute of Manufacturing Engineering Zhejiang University Hangzhou 310027 China Institute of Industry Engineering Zhejiang University of Technology Hangzhou 310032 China

In order to rationally design the mixed model assembly line and effectively solve the assembly line balancing problem, this paper analyses the characteristics of mixed model assembly lines and designs a new algorithm based on the process exchange. This algorithm could combine with research achievements of mixed model sequencing problems to make the assembly line more balanced owing to its high compatibility. This paper describes the principle and the executing process of this new algorithm in details. Lastly, the new algorithm was applied in an automobile harness of lamp assembly line, the results of which proved the validity and feasibility of the algorithm this paper proposed.

关键词： Assembly Production algorithm design and analysis Analytical models Workstations Optimization Load modeling

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analysis of adaptive algorithm to power aware design for H.264/AVC integer motion estimation engine in HDTV application

Analysis of adaptive algorithm to power aware design for H.2...

引用

International Conference on ASIC

作者： Yiqing Huang Takeshi Ikenaga Information Production and Systems Waseda University Japan

In this paper, we contribute two reconfigurable integer motion estimation (IME) architectures (namely RSADT and RPPSAD) based on adaptive algorithm. Firstly, based on the pixel difference analysis, the spatial redundancy is further exploited and three subsampling patterns are selected adaptively. Secondly, in order to keep full data reuse, we propose an architecture level data organization for RSADT architecture. For RPPSAD, we apply pixel classification and memory organization to keep full data reuse. An interactive data loading scheme is proposed to reduce power dissipation. Experiments show that, with some extra hardware, our RSADT can averagely achieve 65.86% reduction in processing time; as for RPPSAD, it can save 25.4% to 39.8% power dissipation when processing typical HDTV720p sequences.

关键词： algorithm design and analysis Adaptive algorithm Automatic voltage control Motion estimation Engines HDTV Hardware Power dissipation Pattern analysis Reconfigurable architectures

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design and Complexity analysis of Reed Solomon Code algorithm for Advanced RAID System in Quaternary Domain

Design and Complexity Analysis of Reed Solomon Code Algorith...

引用

IEEE Computer Society Annual Symposium on VLSI

作者： Varun Vasudevan Vinay Sheshadri Sivarama Krishnan R. Indian Institute of Science Bangalore India NetApp India Pvt. Ltd. Bangalore India Mistral Solutions Pvt. Ltd. Bangalore India

The complexity of programmable logic design has increased ever since its conception because of the increased focus on seamless integration of design creation. Interconnections, which occupy 60 to 90% of the chip area, play a vital role in deciding the power and delay in such designs. Hence there is an increased focus on Multi-Valued Logic, because of its inherent ability to reduce the number of interconnections. In this paper, we present the design of (n=15, k=13) Reed Solomon code algorithm for advanced Redundant Array of Independent Disks (RAID) system in quaternary domain, to tolerate multiple disk failures. We present two designs to implement the algorithm on a FPGA- a heterogeneous design consisting of quaternary and binary circuits, a complete quaternary design. The first design performs all computations using only binary EX-OR gates. This design requires more EX-OR operations than the binary counterpart. This number is a function of the generator polynomial used for encoding. The second design based on quaternary look-up tables is efficient and can be easily implemented. The look-up tables are in turn based on quaternary multiplexers that can be further optimized by reducing the feature size.

关键词： Polynomials algorithm design and analysis Table lookup Generators Reed-Solomon codes Integrated circuit interconnections Logic gates

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