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Articles

Page 71 of 73

  1. We address the problem of multiuser detection in fast fading multipath environments for DS-CDMA systems. In fast fading scenarios, temporal variations of the channel cause significant performance degradation e...

    Authors: Mohammad Jaber Borran and Behnaam Aazhang

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:797523

    Content type: Research Article

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  2. To maximize the downlink code-division multiple access (CDMA) system capacity, we propose to minimize the total transmitted power of the system subject to users′ signal-to-interference ratio (SIR) requirements...

    Authors: Mohammad Saquib and Habibul Islam

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:498216

    Content type: Research Article

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  3. A linear prefilter can be used to reduce the required complexity of a maximum likelihood sequence detector Viterbi algorithm (MLSD-VA) by shortening the overall channel and prefilter impulse response in dynami...

    Authors: Michael Boyle and Anthony D. Fagan

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:373925

    Content type: Research Article

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  4. Parameter estimation of time-varying non-Gaussian autoregressive processes can be a highly nonlinear problem. The problem gets even more difficult if the functional form of the time variation of the process pa...

    Authors: Petar M. Djurić, Jayesh H. Kotecha, Fabien Esteve and Etienne Perret

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:262156

    Content type: Research Article

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  5. The most important third generation (3G) cellular communications standard is based on wideband CDMA (WCDMA). Receivers based on TDMA style channel equalization at the chip level have been proposed for a WCDMA ...

    Authors: Kari Hooli, Markku Juntti, Markku J. Heikkilä, Petri Komulainen, Matti Latva-aho and Jorma Lilleberg

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:180318

    Content type: Research Article

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  6. This work aims at detecting surface defects on reflecting industrial parts. A machine vision system, performing the detection of geometric aspect surface defects, is completely described. The revealing of defe...

    Authors: Ralph Seulin, Frederic Merienne and Patrick Gorria

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:801489

    Content type: Research Article

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  7. This study concerns the detection and localization of weed patches in order to improve the knowledge on weed-crop competition. A remote control aircraft provided with a camera allowed to obtain low cost and re...

    Authors: Jean-Baptiste Vioix, Jean-Paul Douzals, Frédéric Truchetet, Louis Assémat and Jean-Philippe Guillemin

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:793080

    Content type: Research Article

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  8. We present an algorithm for fish otolith growth ring detection using a multiagent system. Up to now, the identification of growth rings, for age estimation, is routinely achieved by human readers, but this tas...

    Authors: Anne Guillaud, Herve Troadec, Abdesslam Benzinou, Jean Le Bihan and Vincent Rodin

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:756043

    Content type: Research Article

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  9. Authors: Luciano da F. Costa and Fabrice Meriaudeau

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:713138

    Content type: Research Article

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  10. We present one method for detecting defects on an inclined textured plane. This method uses a combination of a shape from texture (SFT) method with the Delaunay triangulation technique. The SFT method provides...

    Authors: Justin Plantier, Laurent Boutté and Sylvie Lelandais

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:691045

    Content type: Research Article

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  11. This paper presents a surface inspection prototype of an automatic system for precision ground metallic surfaces, in this case bearing rolls. The surface reflectance properties are modeled and verified with op...

    Authors: Franz Pernkopf and Paul O'Leary

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:650750

    Content type: Research Article

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  12. Quality control in mammography is based upon subjective interpretation of the image quality of a test phantom. In order to suppress subjectivity due to the human observer, automated computer analysis of the Le...

    Authors: Lilian Blot, Anne Davis, Mike Holubinka, Robert Martí and Reyer Zwiggelaar

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:647019

    Content type: Research Article

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  13. A common objective in the web transport industry is to increase the velocity as much as possible. Some disturbances drastically limit this velocity. Time-varying eccentricity of the rolling winder is one of th...

    Authors: Christophe Doignon and Dominique Knittel

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:497390

    Content type: Research Article

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  14. This paper describes the implementation of INFIBRA, a machine vision system used in the quality control of acrylic fibre production. The system was developed by INETI under a contract with a leading industrial...

    Authors: Paulo Heleno, Roger Davies, Bento A. Brázio Correia and João Dinis

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:298501

    Content type: Research Article

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  15. Image data management in the semiconductor manufacturing environment is becoming more problematic as the size of silicon wafers continues to increase, while the dimension of critical features continues to shri...

    Authors: Kenneth W. Tobin, Thomas P. Karnowski, Lloyd F. Arrowood, Regina K. Ferrell, James S. Goddard and Fred Lakhani

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:215759

    Content type: Research Article

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  16. A novel combined frequency and spatial domain method is presented in this paper for blockiness reduction for low bit rate compressed images. The method consists of two stages: in the first, better estimates of...

    Authors: George A. Triantafyllidis, Dimitrios Tzovaras, Demetrios Sampson and Michael G. Strintzis

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:971438

    Content type: Research Article

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  17. Many algorithms for temporal video partitioning rely on the analysis of uncompressed video features. Since the information relevant to the partitioning process can be extracted directly from the MPEG compresse...

    Authors: Janko Calic and Ebroul Izquierdo

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:847653

    Content type: Research Article

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  18. This paper deals with video segmentation for MPEG-4 and MPEG-7 applications. Region-based active contour is a powerful technique for segmentation. However most of these methods are implemented using level sets...

    Authors: Frederic Precioso and Michel Barlaud

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:793184

    Content type: Research Article

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  19. This paper presents an H.323 standard compliant virtual video conferencing system. The proposed system not only serves as a multipoint control unit (MCU) for multipoint connection but also provides a gateway f...

    Authors: Chia-Wen Lin, Yao-Jen Chang, Chih-Ming Wang, Yung-Chang Chen and Ming-Ting Sun

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:756942

    Content type: Research Article

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  20. We propose a method for tracking of objects contained in video sequences. Each video object is represented by a set of polygonal regions. A bottom up approach (spatial segmentation/motion estimation) is applie...

    Authors: Amal Mahboubi, Jenny Benois-Pineau and Dominique Barba

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:750583

    Content type: Research Article

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  21. We propose a 3-step algorithm for the automatic detection of moving objects in video sequences using region-based active contours. First, we introduce a very full general framework for region-based active cont...

    Authors: Stéphanie Jehan-Besson, Michel Barlaud and Gilles Aubert

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:695703

    Content type: Research Article

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  22. We present a system for finding and tracking a face and extract global and local animation parameters from a video sequence. The system uses an initial colour processing step for finding a rough estimate of th...

    Authors: Jörgen Ahlberg

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:569028

    Content type: Research Article

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  23. Cellular systems using adaptive antennas for spatial processing have been shown to provide an increase in capacity. When employing adaptive antennas, the standard approach to achieve capacity gain has been to ...

    Authors: Ivan Howitt and Fahed H. Awad

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:272173

    Content type: Research Article

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  24. Digital image manipulation software is now readily available on personal computers. It is therefore very simple to tamper with any image and make it available to others. Insuring digital image integrity has th...

    Authors: Christian Rey and Jean-Luc Dugelay

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:218932

    Content type: Research Article

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  25. Authors: Moncef Gabbouj, Faouzi Alaya Cheikh, Bogdan Cramariuc and Geoff Morrison

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:154730

    Content type: Research Article

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  26. We propose a low-complexity turbo-detector scheme for frequency selective multiple-input multiple-output channels. The detection part of the receiver is based on a List-type MAP equalizer which is a state-redu...

    Authors: Noura Sellami, Inbar Fijalkow and Mohamed Siala

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:949532

    Content type: Research Article

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  27. Authors: Dirk Slock, Vahid Tarokh and Xiang-Gen Xia

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:865949

    Content type: Research Article

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  28. Sophisticated signal processing techniques have to be developed for capacity enhancement of future wireless communication systems. In recent years, space-time coding is proposed to provide significant capacity...

    Authors: Hakan A. Çırpan, Erdal Panayırcı and Erdinc Çekli

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:758696

    Content type: Research Article

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  29. Differential space-time modulation (DSTM) for multiple antenna communication systems has been recently proposed for frequency-nonselective fading channels. In broadband multirate systems, frequency-selective f...

    Authors: Genyuan Wang, Aijun Song and Xiang-Gen Xia

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:620435

    Content type: Research Article

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  30. This paper presents the design of 8PSK space-time (ST) trellis codes suitable for rapid fading channels. The proposed codes utilize the design criteria of ST codes over rapid fading channels. Two different app...

    Authors: Salam A. Zummo and Saud A. Al-Semari

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:476818

    Content type: Research Article

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  31. We address the problem of blind identification of a convolutive Multiple-Input Multiple-Output (MIMO) system with more inputs than outputs, and in particular, the 3-input 2-output case. We assume that the inpu...

    Authors: Binning Chen, Athina P. Petropulu and Lieven De Lathauwer

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:432606

    Content type: Research Article

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  32. This paper presents the design of space-time turbo trellis coded modulation (ST turbo TCM) for improving the bandwidth efficiency and the reliability of future wireless data networks. We present new recursive ...

    Authors: Welly Firmanto, Branka Vucetic, Jinhong Yuan and Zhuo Chen

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:348476

    Content type: Research Article

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  33. We take a capacity view of a number of different space-time coding (STC) schemes. While the Shannon capacity of multiple-input multiple-output (MIMO) channels has been known for a number of years now, the atta...

    Authors: Constantinos B. Papadias and Gerard J. Foschini

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:292150

    Content type: Research Article

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  34. A subspace based approach for the blind multiple signal separation and recovery for MIMO systems is proposed in this paper. Instead of using the statistics of the received signal, the proposed algorithm exploi...

    Authors: Balaji Sampath, K. J. Ray Liu and Ye (Geoffrey) Li

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:269105

    Content type: Research Article

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  35. This paper concerns some design issues and tradeoffs of communication systems equipped with multiple transmit and receive antennas. The general space-time coding/modulation structure by Tarokh et al. (1999) is...

    Authors: Hsuan-Jung Su and Evaggelos Geraniotis

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:197084

    Content type: Research Article

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  36. Multiple antenna systems are capable of providing high data rate transmissions over wireless channels. When the channels are dispersive, the signal at each receive antenna is a combination of both the current ...

    Authors: Haris Vikalo and Babak Hassibi

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:156743

    Content type: Research Article

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  37. We focus the attention on the problem of audio classification in speech and music for multimedia applications. In particular, we present a comparison between two different techniques for speech/music discrimin...

    Authors: Alessandro Bugatti, Alessandra Flammini and Pierangelo Migliorati

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:980905

    Content type: Research Article

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  38. We introduce a new SVD-based (Singular value decomposition) strategy for noise reduction in hearing aids. This technique is evaluated for noise reduction in a behind-the-ear (BTE) hearing aid where two omnidir...

    Authors: Jean-Baptiste Maj, Marc Moonen and Jan Wouters

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:852365

    Content type: Research Article

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  39. The algorithm presented in this paper is comprised of three main stages: (1) classification of the image sequence and, in the case of a moving camera, parametric motion estimation, (2) change detection having ...

    Authors: Eftychis Sifakis, Ilias Grinias and Georgios Tziritas

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:721235

    Content type: Research Article

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  40. Authors: Moncef Gabbouj, Faouzi Alaya Cheikh, Bogdan Cramariuc and Geoff Morrison

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:479425

    Content type: Research Article

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  41. The identification of objects in video sequences, that is, video segmentation, plays a major role in emerging interactive multimedia services, such as those enabled by the ISO MPEG- ...

    Authors: Paulo Lobato Correia and Fernando Pereira

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:431748

    Content type: Research Article

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  42. The European Union IST research programme SAMBITS (System for Advanced Multimedia Broadcast and IT Services) project is using Digital Video Broadcasting (DVB), the DVB Multimedia Home Platform (MHP) standard, ...

    Authors: Alan Pearmain, Mounia Lalmas, Ekaterina Moutogianni, Damien Papworth, Pat Healey and Thomas Rölleke

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:128562

    Content type: Research Article

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  43. We present a novel approach to shape similarity estimation based on distance transformation and ordinal correlation. The proposed method operates in three steps: object alignment, contour to multilevel image t...

    Authors: Faouzi Alaya Cheikh, Bogdan Cramariuc, Mari Partio, Pasi Reijonen and Moncef Gabbouj

    Citation: EURASIP Journal on Advances in Signal Processing 2002 2002:124089

    Content type: Research Article

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