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Theory of filter banks over finite fields

Theory of filter banks over finite fields

引用

IEEE Asia-Pacific conference on Circuits and Systems

作者： T. Cooklev A. Nishihara M. Sablatash Department of Physical Electronics Tokyo Institute of Technology Okayama Tokyo Japan Communications Rcscarch Centre Ottawa Canada

The theory of digital filter banks for subband coding is well developed. The purpose of this paper is to develop an analogous framework for the multiresolution analysis of sequences of elements belonging to a finite field. The discussion starts with analysis of decimation and interpolation over finite fields. N-band digital filters are defined over finite fields. Then filter banks are studied. A design theory of orthogonal and biorthogonal filter banks is advanced and examples are given.

关键词： Channel bank filters Galois fields Filter bank Digital filters Discrete Fourier transforms Sampling methods signal processing algorithms Finite impulse response filter Interpolation Image coding

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PROPERTIES AND APPLICATIONS OF THE NEW GHOST CANCELLATION REFERENCE signal

PROPERTIES AND APPLICATIONS OF THE NEW GHOST CANCELLATION RE...

引用

IEEE 1993 INTERNATIONAL CONF ON CONSUMER ELECTRONICS

作者： KOO, D Philips Lab Briarcliff Manor United States

ISBN: (纸本)0780308433

In 1992, the United States advanced Television Systems Committee voted a Ghost Cancellation Reference (GCR) signal as a U.S. standard. This GCR signal belongs to a new class of high energy signals, described below. This paper will concisely analyze the signal, and discuss its properties and its processing. Some effective algorithms and applications in echo/ghost cancellation will also be described.

关键词： Television picture quality

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Plenary, Special, Audio, Underwater Acoustics, VLSI, Neural Networks

Plenary, Special, Audio, Underwater Acoustics, VLSI, Neural ...

引用

1993 IEEE International conference on Acoustics, Speech and signal processing

ISBN: (纸本)0780309464

Proceedings incorporates 164 papers. These are arranged according to the following major topics: sonar beamforming;VLSI architectures;VLSI algorithms and arithmetic;design methodology and image processing;directions in VLSI signal processing;signal processing techniques in neural networks;neural networks in speech applications;theory and algorithms in neural networks;neural networks in visual applications;spectral quantization for speech coding;language modeling;speech recognition in noise;spoken language systems;speech coding at rates below 4 KB/S;speech synthesis;speech recognition in neural networks;search and modeling techniques;enhancement of noisy speech;speaker and language identification;word spotting;speech analysis and synthesis;adaptive modeling;medium rate speech coding;feature representation for recognition;speech processing education;role of signal processing in advanced manufacturing;biomedical signal processing;digital video;hearing and aids for handicapped;room acoustics, echo cancellation, rransducer arrays and active noise control;broadband audio coding and music signal processing;direction and signal parameter estimation;as well as source localization.

关键词： Speech processing

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Proceedings of the IEEE 1993 Custom Integrated Circuits conference

Proceedings of the IEEE 1993 Custom Integrated Circuits Conf...

引用

Proceedings of the IEEE 1993 Custom Integrated Circuits conference

ISBN: (纸本)0780308263

This conference proceedings contains 154 papers on the design and fabrication of custom integrated circuits. Topics discussed include programmable logic design automation and applications, microprocessors and neural networks, advanced digital synthesis, integrated analog filters, programmable logic device architectures, macromodeling and simulation of CMOS digital circuits, performance-driven physical design automation, hard disk drive electronics, VLSI for video media, high performance circuits and graphics processors, design automation for analog and mixed-signal integrated circuits, analog modeling and simulation, digital filter and special-purpose digital signal processing circuits, advanced communication LSIs, automatic layout generation and analysis, asymptotic waveform evaluation and simulation algorithms, advances in gate arrays, integrated circuit fabrication technology, memory and special logic chips, high-precision timing circuits, analog to digital data converters, optical and electrical interconnect and interface circuits, and CMOS logic circuit reliability.

关键词： CMOS integrated circuits

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advanced TELEOPERATION CONTROLLER ARCHITECTURE

ADVANCED TELEOPERATION CONTROLLER ARCHITECTURE

引用

1993 SPIE Technical conference on Telemanipulator Technology and Space Telerobotics

作者： PALJUG, ED SCHENKER, PS JET PROP LAB PASADENACA 91109

ISBN: (纸本)0819413224

This paper describes a real-time controller architecture being implemented within the advanced Teleoperation Laboratory at the California Institute of Technology's Jet Propulsion Laboratory. We address system performance/integration trade-off issues with respect to the system's computational needs and the present day technology, while considering a variety of specification goals in addition to performance, e.g., the flexibility to enable fast prototyping of new real-time control algorithms and control/sensor interfaces.

关键词： Robots Interfaces Telecommunications Cameras Visualization Control systems Robotics Servomechanisms Digital signal processing Fiber optic communications

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Static image format conversion for advanced multimedia

Static image format conversion for advanced multimedia

引用

1993 IEEE International conference on Acoustics, Speech, and signal processing

作者： R. Soininen I. Defee Y. Neuvo Signal Processing Laboratory Tampere University of Technology Tampere Finland

The requirements and taxonomy of still image conversion problems for advanced multimedia applications are indicated. Sophisticated signal processing algorithms are studied for some static image format conversion problems without motion dependence. The main quality problems in this area are identified, and improved algorithms are proposed. These algorithms are designed from the perceptual point of view to eliminate blurring, flickering, and information loss in operations such as zooming, aspect ratio change, and progressive-to-interlace conversion. Test results confirm the improved performance of these algorithms compared with the existing methods.< >

关键词： Image converters signal processing algorithms Production Transform coding Testing Bandwidth Digital images HDTV TV Computer displays

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G-NEIGHBORS 2

G-NEIGHBORS

引用

Vision Geometry II conference

作者： BOULT, T MELTER, RA SKORINA, F STOJMENOVIC, I COLUMBIA UNIV DEPT COMP SCINEW YORKNY 10027

ISBN: (纸本)0819413259

Image processing often involves operations using `neighbor' pixels. This paper combines the usual definition of 4 or 8 connected neighbors with image information to produce local neighbor definitions that are signal dependent. These generalized neighbors, G-neighbors, can be used for a variety of image processing tasks. The paper examines their use for detail preserving smoothing and morphology. The simple/local nature of G-neighbor definitions make them ideal for implementation on low-level pixel parallel hardware. A near real-time parallel implementation of the G-neighbor computation, including G-neighbor-based detail preserving smoothing and G-neighbor morphology, is discussed. The paper also provides a qualitative comparison of G-neighbor-based algorithms to previous work.

关键词： Smoothing Binary data Digital filtering Vision geometry Sensors Image processing Cameras Light sources and illumination Surgery Nonlinear filtering

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PRIORITY STATISTICAL MULTIPLEXING OF MIXED VBR VIDEO AND CBR TRAFFIC IN B-ISDN ATM WITH A THRESHOLD ALGORITHM

PRIORITY STATISTICAL MULTIPLEXING OF MIXED VBR VIDEO AND CBR...

引用

12TH ANNUAL JOINT CONF OF THE IEEE COMPUTER AND COMMUNICATION SOCIETIES - NETWORKING : FOUNDATION FOR THE FUTURE ( INFOCOM 93 )

作者： IZMAILOV, R AYANOGLU, E AT&T Bell Lab Holmdel United States

ISBN: (纸本)0818635800

As broadband integrated networks such as B-ISDN/ATM are coming closer to reality, and as more advanced variable rate source coding algorithms are being developed, the accommodation of variable bit rate (VBR) sources, such as VBR coded video, together with the existing constant bit rate (CBR) sources is becoming a necessity. Due to the bursty nature and the low delay and low loss requirements of VBR video, statistical multiplexing with loss and delay priorities is needed so that VBR video and CBR traffic can be jointly accommodated. This paper analyzes a threshold priority access statistical multiplexing technique with a Markov modulated fluid source model for VBR video traffic, and an exact CBR model. Exact expressions for loss probabilities and delay are obtained. Based on these quality of service parameters, buffer size requirements of the statistical multiplexer are obtained, and the performance of a fixed threshold algorithm is compared with that of a rate-based threshold algorithm. The results provide the tradeoffs between buffer size and processing complexity for control. The exact analytical results can be used to calculate buffer size requirements.

关键词： Video signal processing

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A wide dynamic-range phase detector for advanced communication systems application

A wide dynamic-range phase detector for advanced communicati...

引用

Communications, Power and Computing conference: WESCANEX

作者： M. Madihian C&C Systems Research Laboratories NEC Corporation Limited Kawasaki Japan

The author proposes a novel phase sensitive detector with a programmable sensitivity and phase detection range for signal processing/detection in the phase domain. To generate a phase discrimination response with a specified sensitivity and detection range, a mathematical procedure is developed to represent the response in terms of a truncated trigonometric power-series of cos theta and sin theta with theta being the phase deviation of an input modulated signal. Based on mathematical results, an algorithm is developed to synthesize the detector by electronically mechanizing each power-series term using an analog multiplication, programmable coefficient scaling, and transversal summing. Employing the algorithm, the idea of a wide range linear quasi 2 pi -radian phase detector for a M-ary phase shift keying (PSK)/quadrature amplitude modulation (QAM) and phase locked loop (PLL) system application is presented. Detector performance in the presence of additive noise has been investigated to show that an input signal-to-noise power ratio higher than 10 dB will assure satisfactory system operation.< >

关键词： Phase detection Detectors signal processing algorithms Phase shift keying Quadrature amplitude modulation Phase locked loops signal processing Power generation signal generators Phase modulation

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Parallel processing of the Newton-Euler equations of robot arm motion on a network of TMS320C25 processors

Parallel processing of the Newton-Euler equations of robot a...

引用

IEEE International Symposium on Industrial Electronics (ISIE)

作者： H. Palaz F. Kurugollu I.O. Bucak Department of Electronics Marmara Research Center Gebze Turkey

The development of a real-time advanced dynamic robot arm controller which is cost-effective, compact and flexible is described for a six joint arm. It utilizes IBM PC-AT as a host computer and was configurated with up to seven digital signal processors. First, the controller interprets high-level control commands from the IBM PC-AT and performs a robot arm control computation based on the Newton-Euler equations which are known to be the most efficient algorithm for multiprocessor systems. Implementation of a parallel algorithm of the dynamic control law based on Newton-Euler formulation is proposed on the PARADISE multiprocessor system. The design of hardware and software for the controller is discussed in more detail.< >

关键词： Parallel processing Equations Parallel robots Control systems Robot control Multiprocessing systems Digital signal processors Process control High performance computing signal processing algorithms

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