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UKSim 5th European Modelling Symposium on Computer Modelling and Simulation (EMS)

作者： Samarah, Ashraf Albashar, Alaa Loffeld, Otmar Univ Siegen Ctr Sensor Syst ZESS D-57068 Siegen Germany

ISBN: (纸本)9780769546193

This paper proposes a unique parallel processing technique to generate a high bandwidth digital chirp signal up to 320 MHz with 200 MHz clock frequency using the approximation of the piecewise parabolic interpolation for the applications of radar, particularly Synthetic Aperture Radar (SAR). In this work, a smart parallel processing technique with 4 threads is completely derived, implemented and exploited to increase the bandwidth of the generated chirp signals using a hybrid system based on direct digital frequency synthesizer with low cost and minimal hardware overhead, in addition to having a smaller ROM size with respect to the other existing techniques in the literature.

关键词： digital chirp signal piecewise parabolic interpolation parallel processing technique

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GPU-Accelerated Single Image Depth Estimation with Color-Filtered Aperture

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KSII TRANSACTIONS ON INTERNET AND INFORMATION SYSTEMS 2014年第3期8卷 1058-1070页

作者： Hsu, Yueh-Teng Chen, Chun-Chieh Tseng, Shu-Ming A MTK Corp Taipei 236 Taiwan Natl Taipei Univ Technol Dept Elect Engn Taipei 106 Taiwan

There are two major ways to implement depth estimation, multiple image depth estimation and single image depth estimation, respectively. The former has a high hardware cost because it uses multiple cameras but it has a simple software algorithm. Conversely, the latter has a low hardware cost but the software algorithm is complex. One of the recent trends in this field is to make a system compact, or even portable, and to simplify the optical elements to be attached to the conventional camera. In this paper, we present an implementation of depth estimation with a single image using a graphics processing unit (GPU) in a desktop PC, and achieve real-time application via our evolutional algorithm and parallel processing technique, employing a compute shader. The methods greatly accelerate the compute-intensive implementation of depth estimation with a single view image from 0.003 frames per second (fps) (implemented in MATLAB) to 53 fps, which is almost twice the real-time standard of 30 fps. In the previous literature, to the best of our knowledge, no paper discusses the optimization of depth estimation using a single image, and the frame rate of our final result is better than that of previous studies using multiple images, whose frame rate is about 20fps.

关键词： Real time graphics processing unit parallel processing technique compute shade

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A 320 MHz Digital Linear Frequency Modulated Signal Generator for Radar Applications Using FPGA Technology 6

A 320 MHz Digital Linear Frequency Modulated Signal Generato...

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6th International Conference on Computational Intelligence and Communication Networks

作者： Samarah, Ashraf Al Isra Univ Dept Elect Engn Amman Jordan

ISBN: (纸本)9781479969296

This work proposes a realization for an improved system using a unique parallel processing technique and the approximation of the piecewise parabolic interpolation, to generate digital chirp signals with a bandwidth reaches up to 320 MHZ for the applications of radar and particularly Synthetic Aperture Radar ( SAR). In this work, a hardware implementation for a smart parallel processing technique with 4 threads is completely derived and achieved, this implementation is done by field programmable gate array ( FPGA) technology, and exploited to increase the bandwidth of the generated chirp signals using a hybrid system based on direct digital frequency synthesizer with low cost and minimal hardware overhead, in addition to having a smaller ROM size with respect to the other existing techniques in the literature. The utilized implementation uses X5-TX platform with FPGA Xilinx Virtex5 SX95T with 512 MB DDR2 DRAM and 4MB QDR-II memory

关键词： component digital Linear Frequency Modulated signal Field Programmable Gate Array (FPGA) Xilinx FPGA board parallel processing technique

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Performance Analysis of parallel FDTD Algorithm on Different Hardware Platforms

Performance Analysis of Parallel FDTD Algorithm on Different...

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IEEE Antennas and Propagation International Symposium /USNC/URSI National Radio Science Meeting

作者： Yu, Wenhua Mittra, Raj Yang, Xiaoling Liu, Yongjun Electromagnet Commun Lab University Pk PA 16802 USA

ISBN: (纸本)9781424436460

Rapid developments in computer techniques and high performance networks have led to the widespread use of the parallel FDTD method for solving large EM problems. It is well known that the FDTD method is an embarrassingly parallel algorithm, which can make an efficient use of a computer cluster to reduce the computation time almost linearly as the number of nodes is increased, provided that the code is structured correctly and is run on the 'right' platform. In this communication, we investigate the parallel performance of the parallel FDTD method on different hardware platforms.

关键词： parallel processing technique FDTD cluster high performance network

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DYNAMIC REAL-TIME SIMULATION OF SYNCHRONOUS GENERATOR BASED ON parallel-processing technique

DYNAMIC REAL-TIME SIMULATION OF SYNCHRONOUS GENERATOR BASED ...

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TENCON 93 - 1993 IEEE Region 10 Conference on Computer, Communication, Control and Power Engineering

作者： ZHOU, QG HAO, YG HE, RM YANG, YH N CHINA INS ELECT POWER BEIJING GRAD SCHBEIJING 100085PEOPLES R CHINA

ISBN: (纸本)780003285X

This paper presents a parallel processing network, a ""transputer network"", on which the dynamic real-time simulation of a single turbine generator to infinite bus power system can be realized. Based on a second-order predictor-corrector algorithm, using the features of the transputer network, a parallel simulation model of the turbine generator is proposed. The simulation program, which is written in OCCAM, has been implemented on a four-CPU transputer network. The real-time simulation results can be obtained with fifth-order generator models. Some simulation curves and discussions are given.

关键词： power system analysis computing synchronous generators electric machine analysis computing digital simulation parallel processing transputer systems predictor-corrector methods real-time systems turbogenerators synchronous generator parallel processing technique transputer network dynamic real-time simulation single turbine generator to infinite bus power system second-order predictor-corrector algorithm parallel simulation model OCCAM fifth-order generator models computer simulation

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EFFICIENT parallel processing technique FOR INVERTING MATRICES WITH RANDOM SPARSITY

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IEE PROCEEDINGS-E COMPUTERS AND DIGITAL techniqueS 1986年第4期133卷 235-240页

作者： BETANCOURT, R College of Engineering Department of Electrical and Computer Engineering San Diego State University San Diego USA

Algorithms for ordering a sparse matrix A for parallel triangular factorisation and for obtaining the parallel inverse of A are given. The heuristic ordering method is based on graph manipulations. It attempts to minimise the completion time of parallel triangular factorisation while preserving the sparsity of the matrix. The inversion method proposed is based on the triangular factors of A. The task of obtaining the ‘sparse inverse’of A is represented by a directed acyclic graph. The algorithm and the graph for the full inversion of A are also given. Claims are substantiated by experiments using test data from several electric networks.

关键词： parallel triangular factorisation directed acyclic graph directed graphs graph manipulations heuristic ordering method sparse matrix completion time parallel processing technique matrix algebra triangular factors Programming and algorithm theory Combinatorial mathematics parallel inverse Linear algebra (numerical analysis) parallel processing

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