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11th IEEE Mediterranean Electrotechnical Conference (IEEE Cat. No.02CH37379)

7-9 May 2002

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  • 11th IEEE Mediterranean Electrotechnical Conference (IEEE Cat. No.02CH37379)

    Publication Year: 2002
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  • On the application of modern signal processing techniques in the design of antenna arrays for wireless communications

    Publication Year: 2002
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (102 KB) | HTML iconHTML

    Summary form only given. The great advances in modern communication systems are mainly due to the fast developments in digital signal processing techniques. In this paper, we first briefly review the main features of six modern signal processing techniques, namely, artificial neural networks (NN), wavelets, genetic algorithms (GA), fractals, higher order statistics (HOS) and constant modulus algor... View full abstract»

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  • Handwritten digit recognition using statistical and rule-based decision fusion

    Publication Year: 2002, Page(s):131 - 135
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (486 KB) | HTML iconHTML

    In this paper, the cooperation of two feature families for handwritten digit recognition using SVM (support vector machine) classifiers is examined. We investigate the advantages and weaknesses of various decision fusion schemes using statistical and rule-based reasoning. The obtained results show that it is difficult to exceed the recognition rate of a single classifier applied straightforwardly ... View full abstract»

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  • A new matrix method for pulse train identification

    Publication Year: 2002, Page(s):183 - 187
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (363 KB) | HTML iconHTML

    In this paper a new matrix-based method is proposed for. identification of radar pulse train. The proposed method, which is called NASH, can be used to identify the PRI for constant, staggered, and jittered signal. Previous matrix-based methods can only identify the first type of signal, i.e. constant PRI. The complexity of computation in NASH is approximately equal to 2.5N/sup 2/ which is lower t... View full abstract»

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  • 5/spl times/4 Gbps 0.35 micron CMOS CRC generator designed with standard cells

    Publication Year: 2002, Page(s):215 - 219
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (442 KB) | HTML iconHTML

    Design highlights for a 32-bit parallel and highly pipelined cyclic redundancy code (CRC) generator are presented. The design can handle 5 different channels at an input rate of 2 Gbps each (the total output throughput is 5×4 Gbps.) The generated CRCs are compatible with the 32-bit Ethernet standards. The circuit has been implemented with standard cells in a 0.35μm standard CMOS process u... View full abstract»

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  • Advances in the design of pulse-shaping filters for data transmission

    Publication Year: 2002
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (93 KB) | HTML iconHTML

    Summary form only given. A data transmission filter is primarily a pulse shaping network. It has a time domain response which allows the transmission of pulses with negligible intersymbol interference (ISI). In this paper, the various approaches to the design of data transmission filters are reviewed for both analog and digital filters. After comparing the techniques, a very general approach (Bahe... View full abstract»

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  • Author's index

    Publication Year: 2002, Page(s):611 - 616
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    Freely Available from IEEE
  • On detecting note onsets in piano music

    Publication Year: 2002, Page(s):385 - 389
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (530 KB) | HTML iconHTML

    This paper presents an overview of our researches in the use of connectionist systems for transcription of polyphonic piano music and concentrates on the issue of onset detection in musical signals. We propose a new technique for detecting onsets in a piano performance. The technique is based on a combination of a bank of auditory filters, a network of integrate-and-fire neurons and a multilayer p... View full abstract»

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  • A CMOS fractional-N frequency synthesizer for low-power RF applications

    Publication Year: 2002, Page(s):527 - 531
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (463 KB) | HTML iconHTML

    A divider-free fractional-N CMOS frequency locked loop synthesizer is presented. The frequency divider used in traditional frequency synthesizers is replaced by a switched-capacitor frequency detector (SC-FD). The architecture of the proposed synthesizer has been successfully simulated at behavioral level to verify its expected functionality. Design considerations of various synthesizer building b... View full abstract»

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  • Improvements of ITU-R field strength prediction method for land mobile services

    Publication Year: 2002, Page(s):347 - 351
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (512 KB) | HTML iconHTML

    During implementation, it was found that the popular field strength prediction method for land mobile services defined by ITU-R recommendations has several vaguenesses. First of all, several important situations are not defined precisely. Also, an important correction factor, valid for years, was surprisingly changed in the latest version of the recommendations. In order to resolve the mentioned p... View full abstract»

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  • The Fourier analysis of a-Si:H photodiode transient response

    Publication Year: 2002, Page(s):45 - 48
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (386 KB) | HTML iconHTML

    In this paper, color detection based on the transient response of n-i-p a-Si:H photodiodes to light and voltage pulses was described. The responses to a voltage pulse at constant light and to a light pulse at constant reverse bias voltage were also measured. From the measured dark current as well as the photocurrent, which are both proportional to the instantaneous charge change, the charge was ca... View full abstract»

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  • Billing system for Internet service provider (ISP)

    Publication Year: 2002, Page(s):260 - 268a
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (877 KB) | HTML iconHTML

    The main objective of this paper is to propose and develop a billing system for use by Internet service providers (ISPs) to charge Internet users according to their network usage (i.e. their traffic). This means that users are charged depending on the volume of traffic they create. The main idea of the proposed billing system is that when a user attempts to establish a connection with the outside ... View full abstract»

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  • Nonlinear PID controller design using fuzzy logic

    Publication Year: 2002, Page(s):595 - 599
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (444 KB) | HTML iconHTML

    An algorithm for designing a nonlinear PID controller is presented. The essential idea is to combine linear controllers using fuzzy reasoning to produce a nonlinear PID controller. The resulting controller enjoys several interesting properties: it has the limiting structure of a PD controller for maximum error and becomes a PI controller, as the error tends to zero. Large control effort is produce... View full abstract»

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  • A complete algorithm to fault calculation due to simultaneous faults. "Combination of short circuits and open lines"

    Publication Year: 2002, Page(s):522 - 526
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (468 KB) | HTML iconHTML

    This paper discusses the great variety of fault types that can arise on a power system. The most important techniques of this paper is the consideration of unequal magnitudes of source EMF and with different phase angles to show their effect on fault analysis and protection of the power system. Furthermore, an algorithm developed for the calculation of simultaneous power system faults is explained... View full abstract»

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  • Position of modern peer-to-peer systems in the distributed systems architecture

    Publication Year: 2002, Page(s):341 - 345
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (531 KB) | HTML iconHTML

    Recently, the hottest development in the area of distributed computing is the appearance of peer-to-peer systems, employing a direct communication and free resources on desktop computers. We describe peer-to-peer systems, compare the definitions of distributed systems with those of peer-to-peer systems and stress the characteristic aspects. View full abstract»

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  • Current-balanced logic in submicron technology

    Publication Year: 2002, Page(s):41 - 44
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (354 KB) | HTML iconHTML

    The analysis of the current-balanced logic (CBL) in submicron technology is presented. Current-balanced logic is a low-noise logic family suitable for use in mixed-signal integrated circuits, because of the reduced supply current spikes. On entering the submicron region, the question arises as to whether the CBL will still maintain this good performance. The analysis of CBL with the simple current... View full abstract»

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  • A sinusoidal PWM control for four-quadrant single-phase drive system

    Publication Year: 2002, Page(s):147 - 151
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (499 KB) | HTML iconHTML

    DC drive systems controlled by pulse-width modulation (PWM) techniques are expected to replace the conventional phase-controlled systems. This is due to their simple control, high reliability, low cost and fast response. This paper presents the performance of a new four-quadrant single-phase DC motor drive system controlled by a sinusoidal PWM full-bridge DC-DC power converter and provides an acti... View full abstract»

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  • Call admission control with adaptive allocation of resources in wireless ATM networks

    Publication Year: 2002, Page(s):255 - 259
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (584 KB) | HTML iconHTML

    Wireless ATM is an emerging network technology that combines the capabilities of ATM with user mobility and undeterred access. Therefore, call admission control is a crucial function in mobile networks. It assists users to move and communicate freely beyond the limits of a specific wireless area, without losing their established connection and at the same time it decides whether an incoming call s... View full abstract»

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  • A new self-tuning method for fuzzy control

    Publication Year: 2002, Page(s):590 - 594
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (443 KB) | HTML iconHTML

    A self-tuning scheme for fuzzy logic controllers (FLC) is presented. Within the normalized phase plane, the state vector is analyzed into two components (d1, d2): one on the direction of the pseudoswitching line and the other on the perpendicular direction. The output scaling factors of the FLC are adjusted on-line according to the magnitudes of d1 and d2 View full abstract»

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  • Behavior study of polarized distance relay in presence of the simultaneous faults

    Publication Year: 2002, Page(s):517 - 521
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (531 KB) | HTML iconHTML

    The first part of the paper is concerned with an algorithm of fault calculations for several cases of simultaneous faults to obtain complete information about the current and voltage which are needed in power network protection systems, especially distance relays. The second part presents the behavior of plain and polarized distance relays for each fault case and deals with the operation caused by... View full abstract»

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  • A procedure for functional profiles determination

    Publication Year: 2002, Page(s):336 - 340
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (518 KB) | HTML iconHTML

    The paper outlines a methodology for the selection of functional profiles to be used in developing information infrastructures for transition countries, which should ensure end-to-end connectivity along with full user interoperability. The characteristics of layered end-to-end communication as well as the importance of functional profiles in implementing distributed applications require the determ... View full abstract»

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  • Temperature effects modeling in silicon piezoresistive pressure sensor

    Publication Year: 2002, Page(s):36 - 40
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB) | HTML iconHTML

    Temperature effects and compensation for temperature drift of offset voltage in silicon piezoresistive pressure sensors were analyzed. The derived equations take into account temperature dependences, the piezoresistive effect and thermal expansion of the diaphragm inducing additional stresses. Measurements performed on fabricated sensors confirm the importance of diaphragm induced thermal stress. ... View full abstract»

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  • The use of digital signal processing for a modulation classification

    Publication Year: 2002, Page(s):126 - 130
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (571 KB) | HTML iconHTML

    A modulation classifier, a device that automatically recognizes the modulation type of received radio signals, plays an important role in several communications applications. One solution of a modulation classifier is described in the paper. It is based on the pattern-recognition approach, where some discriminating features are extracted from incoming signal. In the proposed solution, the signal e... View full abstract»

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  • An artificial neural network-based chopper-controlled slip-ring induction motor

    Publication Year: 2002, Page(s):142 - 146
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (447 KB) | HTML iconHTML

    Improving starting conditions and adjusting the speed of wound-rotor induction motor can be achieved by controlling its slip energy using chopper control circuit in the rotor side. This paper presents a novel Artificial Neural Network (ANN)-based chopper-controller. which generates the appropriate chopper duty cycle for my given operating condition. An ANN model was designed for that purpose. The ... View full abstract»

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  • Techniques for performance improvement of VoIP applications

    Publication Year: 2002, Page(s):250 - 254
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (541 KB) | HTML iconHTML

    In order to effectively compete in today's telecommunication market, service providers and enterprises are turning towards voice over IP (VoIP) technology. Initially, the goal of using VoIP in enterprises was a better utilisation of internal packet networks and avoiding long-distance toll charges. On the other side service providers need to rollout new revenue generating services quickly. There ar... View full abstract»

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