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检索条件"任意字段=SiPS 2005: IEEE Workshop on Signal Processing Systems - Design and Implementation"

共 1150 条记录，以下是181-190 订阅

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A cost-effective implementation of object-based motion estimation

A cost-effective implementation of object-based motion estim...

引用

ieee workshop on signal processing systems

作者： Greiner, JC Sethuraman, R van Meerbergen, J de Haan, G Eindhoven Univ Technol Dept Elect Engn NL-5600 MB Eindhoven Netherlands

ISBN: (纸本)0780377958

Emerging applications in the mobile and automotive industries can benefit from a solution which can segment an image into objects. Although originally not developed for these applications, Object-based Motion Estimation (OME) is an algorithm which provides such a segmentation. In this paper we map this algorithm on all Application Specific Instruction Processor (ASIP) based on a Very Long Instruction Word (VLIW) template. An analysis of the computational requirements is made, using Video Format Conversion as an application, since emerging applications aren't available yet. We also propose a multi-level caching architecture to keep bandwidth and power requirements low and discuss algorithmic changes to OME, which are necessary for OME to be mapped on all ASIP VLIW. A quality comparison of the resulting vector fields is made as well.

关键词： Application specific processors Automotive engineering Bandwidth Computer architecture Image converters Image segmentation Motion estimation Parameter estimation Switches VLIW

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Histogram of Oriented Gradients front end processing: an FPGA Based Processor Approach

Histogram of Oriented Gradients front end processing: an FPG...

引用

ieee workshop on signal processing systems (sips)

作者： Kelly, Colm Siddiqui, Fahad Manzoor Bardak, Burak Woods, Roger Thales UK Belfast Antrim North Ireland Queens Univ ECIT Belfast Antrim North Ireland

ISBN: (纸本)9781479965885

The Field Programmable Gate Array (FPGA) implementation of the commonly used Histogram of Oriented Gradients (HOG) algorithm is explored. The HOG algorithm is employed to extract features for object detection. A key focus has been to explore the use of a new FPGA-based processor which has been targeted at image processing. The paper gives details of the mapping and scheduling factors that influence the performance and the stages that were undertaken to allow the algorithm to be deployed on FPGA hardware, whilst taking into account the specific IPPro architecture features. We show that multi-core IPPro performance can exceed that of against state-of-the-art FPGA designs by up to 3.2 times with reduced design and implementation effort and increased flexibility all on a low cost, Zynq programmable system.

关键词： FPGA Memory DSP Video processing HOG

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design and implementation of the Almanet environment

Design and implementation of the Almanet environment

引用

1998 ieee workshop on signal processing systems - design and implementation (sips'98)

作者： Rumsby, S Ibrahim, M Bramer, B De Montfort Univ Fac Comp Sci & Engn Leicester LE1 9BH Leics England

ISBN: (纸本)0780349970

Algebraic Mapping Networks can describe time/space dependencies either at coarse or fine grained level. The work reported here is focused on how compiler technology can be adapted to deal with the AIMa-Net description of fine grain time/space dependencies within a single program. In the first phase, special Almanet statements are embedded in C/C++ and a prototype compiler has been developed which successfully interprets these dependencies and generates the correct executables. At the heart of this compiler is the space-time routine which generates a space-time matrix for each dependent variable. The compiler effectively translates an Almanet program, which is basically data-oriented, into separate process-oriented C programs.

关键词： Program compilers

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Hardware implementation issues of cascade filters MUD for multirate WCDMA systems

Hardware implementation issues of cascade filters MUD for mu...

引用

sips 2005: ieee workshop on signal processing systems - design and implementation

作者： Ho, Quoc-Thai Massicotte, Daniel Laboratory of Signal and System Integration Department of Electrical and Computer Engineering Université du Québec à Trois-Rivières Trois-Rivières Québec Canada

ISBN: (纸本)0780393341

The hardware implementation issues of multiuser interference cancellation techniques for multirate asynchronous Direct-Sequence Code Division Multi-Access (DS-CDMA) systems based on variable spreading factor (VSF) are investigated. Based on an algorithm for monorate systems based on Cascade Adaptive Filter Multi-User Detector (CF-MUD), an analysis is done to choose the best tradeoffs between hardware implementation and algorithmic performance in the third generation (3G) communication scenarios. We investigate two popular techniques, namely low-rate detector (LRD) and high-rate detector (HRD). The goal aims to extend the CF-MUD algorithm and reuse its FPGA-targeted architectures that we previously developed for multirate systems. The developed architectures can be used as an Intellectual Property (IP) core in a System on a Programmable Chip (SOPC) based on Xilinx© Virtex II Pro and Virtex II processing MUD function for asynchronous multirate systems. © 2005 ieee.

关键词： Code division multiple access

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Array signal processing for a wireless MEM sensor network

Array signal processing for a wireless MEM sensor network

引用

1998 ieee workshop on signal processing systems - design and implementation (sips'98)

作者： Yao, K Hudson, RE Reed, CW Chen, D Tung, TL Lorenzelli, F Univ Calif Los Angeles Dept Elect Engn Los Angeles CA 90095 USA

ISBN: (纸本)0780349970

We first review the high-level signal processing architecture of a wireless MEM sensor system for source detection, signal enhancement, localization, and identification. A blind beamformer using only the measured data of randomly distributed sensors to form a sample correlation matrix is proposed. The maximum power collection criterion is used to obtain array weights from the dominant eigenvector of the sample correlation matrix. An effective blind beamforming estimation of the time delays of the dominant source is demonstrated. Source localization based on a novel least-squares method for time delay estimation is also given. Array system performance based on analysis, simulation, and measured acoustical/seismic sensor data are presented. Applications of such a system to multimedia, intrusion detection, and surveillance are briefly discussed.

关键词： Wireless telecommunication systems

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Rapid design of high performance adaptive equalizer and Viterbi decoder for the class-IV PRML channel

Rapid design of high performance adaptive equalizer and Vite...

引用

1998 ieee workshop on signal processing systems - design and implementation (sips'98)

作者： Smith, BDE Mc Canny, JV Queens Univ Belfast Sch Elect Engn Comp Sci DSIP Labs Belfast BT9 5AH Antrim North Ireland

ISBN: (纸本)0780349970

Methods for the rapid design and VLSI implementation of two key components of the class-IV partial response maximum likelihood channel (PR-IV), the adaptive filter and the Viterbi decoder, are described. These are implemented using parameterized modules, constructed from a synthesizable silicon architecture library containing core DSP and arithmetic functions. design studies, based on a 0.35 micron 3.3V standard cell CMOS process, indicate that worst case sampling rates of 180 mega-samples per second are achievable with a power consumption of 0.8W and an area of 4.3mm(2). sigher sampling rates can be obtained by operating a number of filter modules in parallel. This approach offers power saving advantages when compared with systems employing pipelined filters operating at the same speed.

关键词： Equalizers

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On the search for compatible numbers in the design of maximally decimated Perfect Reconstruction Non-Uniform Filter Bank

On the search for compatible numbers in the design of maxima...

引用

ieee workshop on signal processing, systems design and implementation (sips 01)

作者： Absar, MJ George, S ST Microelect R&D Ctr Singapore Singapore

ISBN: (纸本)0780371453

The theory and design of critically sampled Perfect Reconstruction (PR) Uniform Filter Bank (FB) is well established. However, the principles of Non-Uniform PR FB are still an active research topic. In the recent past, a number of necessary (compatibility) conditions have been identified, which any set of integer decimation factors must satisfy for existance of a realizable maximally-decimated perfect- reconstruction non-uniform filter bank. The search for a compatible-set, in the neighborhood of a desired set of decimation factors, can be computationally prohibitive, as it is exponential to the number of filters in the bank. In this paper we propose a branch-and-bound algorithm to efficiently search for compatible-sets. We present experimental results for a compatible set of a 26-filter bank, matching the critical bands of the human auditory system very closely.

关键词： signal filtering and prediction

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Trellis-based systolic multi-layer stereo matching

Trellis-based systolic multi-layer stereo matching

引用

ieee workshop on signal processing systems

作者： Jeong, H Park, SC Pohang Univ Sci & Technol Dept Elect Engn Pohang Kyungbuk South Korea

ISBN: (纸本)0780377958

Stereo vision is the process of recreating 3-D spatial information from a pair of 2-D images. We propose a multilayer stereo vision algorithm and architecture which makes it possible to match two images in real time, without the rectification of the image (the rectification means making the scan line parallel to the epipolar line). It is the self calibration method that searches the pixel within several lines of one image corresponding to a pixel on the scan line of the other image to solve the epipolar probelm. We also propose a subpixel multi-layer system which considers subpixel data. It is useful for the stereo matching of the image with the characteristics of the high frequency bandwidth. The total time complexity is O(N) so that real time processing is possible. The hardware architecture is a simple linear systolic array apt for ASIC. The hardware design is verified by simulations, and it is confirmed that this system can process typical video image sequences in real time.

关键词： Application specific integrated circuits Bandwidth Calibration Frequency Hardware Image sequences Pixel Real time systems Stereo vision Systolic arrays

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Automating the verification of SDR base band signal processing algorithms developed on DSP/FPGA platform

Automating the verification of SDR base band signal processi...

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ieee workshop on signal processing systems design and implementation

作者： Kwan, Andrew Boumaiza, Slim Smith, Michael Ghannouchi, Fadhel Univ Calgary Dept Elect & Comp Engn Schulich Sch Engn 2500 Univ Dr NW Calgary AB T2N 1N4 Canada

ISBN: (纸本)9781424403820

This paper suggests an automated validation approach in testing advanced digital signal processing algorithms. These algorithms, which are intended for the implementation of the base band processor of Software defined radios, are developed in software (Digital signal Processors DSP) and hardware (FP(;A) environments in order to meet real-time and offline requirements. The automation of the testing of such algorithms

关键词： Human computer interaction

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Energy Efficient Norm-and-Correlation-based Antenna Selection Algorithm in Spatially Correlated Massive Multi-User MIMO systems

Energy Efficient Norm-and-Correlation-based Antenna Selectio...

引用

ieee International workshop on signal processing systems (sips)

作者： Tai, Tzu-Hao Chen, Hsin-Jung Chung, Wei-Ho Lee, Ta-Sung Natl Chiao Tung Univ Inst Commun Engn Hsinchu Taiwan Acad Sinica Res Ctr Informat Technol Innovat Taipei Taiwan

ISBN: (纸本)9781538604465

Massive multiuser multi-input multi-output (MUMIMO) system adopting large amount of antennas is a promising technique to improve spectral efficiency and energy efficiency for next generation wireless communication systems. In practice, the channels composed of pairs of transmit and receive antennas are often correlated and computational complexity is one of the critical concern in implementation issue. Hence, antenna selection techniques can be adopted to improve system performance. In this paper, we propose a norm-and-correlation-based selection algorithm for energy efficiency maximization to decide transmit RF chain configuration under the total power constraint in massive MU-MIMO systems.

关键词： Energy efficiency antenna selection multiuser MIMO

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