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Canadian Conference on Electrical and Computer Engineering 2004 (IEEE Cat. No.04CH37513)

2-5 May 2004

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  • A dynamic multi-wavelength simulink model for EDFA

    Publication Year: 2004, Page(s):2077 - 2080 Vol.4
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (323 KB) | HTML iconHTML

    The erbium doped fiber amplifier (EDFA) is an imperative element in DWDM networks. This all-optical amplifier enables simultaneous amplification of multiple wavelengths. Nevertheless, uneven gain across the usable wavelength region remains a concern. Understanding and modelling the dynamic characteristics of an EDFA is an important step towards achieving a flat gain spectrum. A Simulink model for ... View full abstract»

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  • Embedded system partitioning with flexible granularity by using a variant of tabu search

    Publication Year: 2004, Page(s):2073 - 2076 Vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (348 KB) | HTML iconHTML

    Various techniques to partition a system into hardware and software blocks have been proposed in the past. Most of these techniques use some form of control flow graphs (CFG) and employ optimization algorithms like simulated annealing or tabu search to reach an optimal solution. A partitioning method presented in this paper partitions a CFG representation by employing a variant of tabu search, whi... View full abstract»

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  • A 10 b, 40 Msample/s, 25 mW pipeline analog to digital converter

    Publication Year: 2004, Page(s):1989 - 1992 Vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (334 KB) | HTML iconHTML

    This paper describes a 10 b pipelined ADC designed in 0.35 μm CMOS technology which achieves a power dissipation of 25 mW at full speed operation from a single 3 V supply. The proposed high speed gain-boosted operational amplifier make it possible to achieve requirements of 10-bit resolution and settling time of 8 ns within 0.01% accuracy. A dynamic comparator is used for power efficiency. This... View full abstract»

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  • On the design of low power MCML based ring oscillators

    Publication Year: 2004, Page(s):2383 - 2386 Vol.4
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (324 KB) | HTML iconHTML

    In this paper, a closed form expression for the oscillation frequency of MOS current mode logic (MCML) based ring oscillators is derived. The cycle to cycle jitter of MCML ring oscillators is also discussed. Based on the derived expression and the subsequent discussion, a design approach for MCML ring oscillators is devised that leads to minimum power dissipation of the oscillator designed for a g... View full abstract»

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  • Numerical simulation of a multipowered onboard drive train

    Publication Year: 2004, Page(s):2069 - 2072 Vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (363 KB) | HTML iconHTML

    The article aims to simulate a multipowered onboard drive train system. The proposed system is capable of managing and constantly adapting several power sources of different characteristic to a varying current load. All the power sources integrated in the onboard drive train are renewable energy. They include a battery bank, supercapacitors and a fuel cell. The onboard drive train rests mainly on ... View full abstract»

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  • Model predictive control for bilateral teleoperation systems with time delays

    Publication Year: 2004, Page(s):1877 - 1880 Vol.4
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (366 KB) | HTML iconHTML

    In a bilateral teleoperation system, the controller design aims at providing a faithful transmission of signals (velocities, forces) between the master and the slave manipulators to couple the operator as closely as possible to the remote task. However, when teleoperation is performed over a great distance, a transmission time delay is incurred, and it destabilizes the bilaterally controlled teleo... View full abstract»

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  • An integrated low-voltage SLIC/codec for short loop applications

    Publication Year: 2004, Page(s):2379 - 2382 Vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (340 KB) | HTML iconHTML

    A single chip solution for doing analog and digital signal processing for subscriber line telephony is proposed. Conventional line cards use a set of two chips for doing the same job: a low voltage mixed signal chip operating as a voice coder and a high voltage chip to fulfill high voltage requirement (up to 70 V) of the line. The proposed architecture utilizes a single chip designed in the ordina... View full abstract»

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  • Sub-dictionary selection using local discriminant bases algorithm for signal classification

    Publication Year: 2004, Page(s):2001 - 2004 Vol.4
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB) | HTML iconHTML

    In signal decompositions using overcomplete, redundant time-frequency (TF) dictionaries, often it is challenging to restrict the dictionary to a sub-dictionary tailored for specific applications. In the proposed technique we used a similar approach as local discriminant bases algorithm (LDB) to select optimal TF subdictionaries for signal classification applications. A novel time-width versus freq... View full abstract»

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  • On the debugging of a high clutter tracking system

    Publication Year: 2004, Page(s):2103 - 2106 Vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (331 KB) | HTML iconHTML

    The Raytheon High Clutter Tracker (HCT) enables conventional marine radars to detect and track small targets such as swimmers, life rafts and open boats in heavy seas and at long range. In this article a general introduction to the project is given. Then, three debugging and diagnosis software tools are presented. Examples are given to demonstrate the ideas and how the tools are helpful for real w... View full abstract»

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  • Constraint-based routing across multi-domain optical WDM networks

    Publication Year: 2004, Page(s):2065 - 2068 Vol.4
    Cited by:  Papers (4)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB) | HTML iconHTML

    We consider the problem of dynamic provisioning of an end-to-end optical path that is subject to certain user and network constraints and spanning multiple wavelength-routed WDM optical domains. We propose a hierarchical connection-provisioning algorithm for the computation and setup of the end-to-end constraint-based path. We present initial results for the QoS routing scheme with two constraints... View full abstract»

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  • A novel morphological-based carotid artery contour extraction

    Publication Year: 2004, Page(s):1873 - 1876 Vol.4
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (437 KB) | HTML iconHTML

    Ultrasound imaging provides an inexpensive tool for monitoring the blood flow within the carotid artery. The precipitation of plaque on the wall of the carotid artery has a great influence on the blood flow within the artery. Due to the poor quality and the presence of noise in ultrasound images, manual extraction of carotid artery walls is a tedious and time-consuming task. In this paper, a novel... View full abstract»

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  • Plurix, a distributed operating system extending the single system image concept

    Publication Year: 2004, Page(s):1985 - 1988 Vol.4
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (385 KB) | HTML iconHTML

    The Plurix project implements a lean and high-speed object-oriented operating system (OS) for PC clusters. Communication between the cluster nodes is achieved via shared objects in a distributed shared memory (DSM), which is organized as distributed heap storage (DHS) containing both data and code. The consistency of the DHS is guaranteed by the strong transactional consistency model. The latter u... View full abstract»

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  • Cyclostationary-based diversity combining for blind channel equalization using multiple receive antennas

    Publication Year: 2004, Page(s):2375 - 2378 Vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (390 KB) | HTML iconHTML

    At high data rates, radio channels are characterized by severe intersymbol interference (ISI) and deep fades in the received signal levels. This paper develops an integrated approach for the mitigation of these effects using diversity combining and channel equalization in radio systems with multiple receive antennas. To accommodate higher data rates exceeding the channel coherence bandwidth, frequ... View full abstract»

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  • Representing generalized fuzzy automata in recurrent neural networks

    Publication Year: 2004, Page(s):1901 - 1906 Vol.4
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (430 KB) | HTML iconHTML

    In this paper we present a new architecture for the representation of general fuzzy automata (GFA). It is based on second-order recurrent neural networks (2ORNN). The architecture implements the functions F1 and F2, used in GFA, into the structure of 2ORNN. The performance of this representation method is compared with a previous method for embedding fuzzy automata, and it is... View full abstract»

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  • SDI-12 based turbidity measurement system with field calibration capability

    Publication Year: 2004, Page(s):1975 - 1979 Vol.4
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (377 KB) | HTML iconHTML

    Turbidity is a measure of how much the material suspended in water decreases the passage of light through the water. In order to carry out accurate turbidity measurements, turbidity-measuring probes require periodic calibration. Classical calibration implies manual. procedures characterized by long calibration time, additional common errors and lower repeatability. The paper presents a distributed... View full abstract»

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  • Adaptive gossip-based energy conservation for wireless ad hoc routing

    Publication Year: 2004, Page(s):2099 - 2102 Vol.4
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (402 KB) | HTML iconHTML

    Recently, we have proposed to employ gossiping to place nodes in an ad hoc network in an energy saving sleep state via a gossip-based sleep protocol (GSP). A gossiping node employs a random variable (p) to decide whether or not to enter a sleep mode. Our observation is that in a well connected ad hoc network there are usually many paths existing between a source and a destination, so a percentage ... View full abstract»

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  • Effects of network connection topology and routing algorithm on phase transition and throughput in packet-switching network model

    Publication Year: 2004, Page(s):2429 - 2432 Vol.4
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (358 KB) | HTML iconHTML

    We study phase transition from the free flow state to the congested state in a packet switching network (PSN) model. We have developed a time-discrete algorithmic simulation model of the OSI network layer of PSN. We use this model to investigate how the phase transition point is affected by the network size, network connection topology and routing algorithms. We study how additional links added to... View full abstract»

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  • Joint blind deconvolution, fusion and classification of multi-frame imagery

    Publication Year: 2004, Page(s):2061 - 2064 Vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB) | HTML iconHTML

    We propose a novel method for blind reconstruction of multi-frame images that employs multi-frame fusion and classification based constraints for recursive inverse filtering. In particular, recursive FIR filtering is applied to successively taken scan images with the same spatial resolution. The outputs of the filters are then fused and classified jointly and separately to a predetermined number o... View full abstract»

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  • On the extension of SystemC by SystemVerilog assertions

    Publication Year: 2004, Page(s):1869 - 1872 Vol.4
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (393 KB) | HTML iconHTML

    In this paper, we present an extension to the SystemC library by SystemVerilog assertions. SystemC is an emerging system level design and verification language based on C++ object oriented paradigms. It enables the modelling and simulation of a complete system-on-a-chip. We propose to extend the SystemC library with assertion based verification (ABV) which is a higher abstraction mechanism that al... View full abstract»

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  • Goertzel implementations of the forward and inverse modified discrete cosine transform

    Publication Year: 2004, Page(s):2371 - 2374 Vol.4
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (319 KB) | HTML iconHTML

    The paper suggests the use of Goertzel digital filters to calculate the forward and inverse modified discrete cosine transform (MDCT). The forward and inverse MDCT are expressed as a discrete-time convolution sum and three Goertzel digital filter structures (Goertzel MDCT A, B and C) are obtained from the discrete-time convolution sum. These new recursive algorithms require fewer arithmetic operat... View full abstract»

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  • Average degradation degree fair adaptation algorithm in wireless network with mobile hosts

    Publication Year: 2004, Page(s):2303 - 2306 Vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (345 KB) | HTML iconHTML

    In the literature are proposed different architectures and algorithms finalized to mitigate the impacts of mobility on the real-time services to mobile users; several new architectures are proposed here. Since the dynamics of the resources in mobile computing environments are much more severe than in wire-line environments, the need is perceived in the scientific community to provide effective mec... View full abstract»

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  • Intrusion detection for wireless local area network

    Publication Year: 2004, Page(s):1949 - 1952 Vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (361 KB) | HTML iconHTML

    Wireless intrusion detection systems are an important addition to the security of wireless local area networks (WLANs). We focus on intrusion detection and security consideration in wireless local area networks. We present intrusion detection for WLANs, give wireless intrusion detection systems and system architecture considerations. We also present a conceptual model for an IDS agent. IDS agents ... View full abstract»

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  • Application of fuzzy logic for improved software project management estimations

    Publication Year: 2004, Page(s):1897 - 1900 Vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (373 KB) | HTML iconHTML

    Project management (PM) is the application of knowledge, skills, tools and techniques to project activities in order to meet project requirements. The success of any project relies heavily on the initial estimation of all project parameters. Fuzzy logic is a soft-computing technique used to effectively solve uncertainties due to imprecise inputs to generate linguistic or quantitative outputs. This... View full abstract»

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  • Combining H.264 and MPEG2 for multi-resolution video applications

    Publication Year: 2004, Page(s):2415 - 2419 Vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (413 KB) | HTML iconHTML

    The recent completion of the H.264 standard has opened new areas of research in the area of scalability. Spatial scalability for high definition sequences is particularly important, since future DVDs and broadcasts will undoubtedly be in high definition formats. In this paper, a new method of combining a low-resolution MPEG2 base layer with a high-resolution H.264 enhancement layer is explored. Fo... View full abstract»

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  • Defining power factor for intermittent duty load conditions

    Publication Year: 2004, Page(s):1997 - 2000 Vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB) | HTML iconHTML

    With rapid industrialization the use of electrical machines is increasing exponentially. The use of these machines includes their application as continuous duty and intermittent duty. The intermittent duty applications have become very popular for their applications in automation, but assessment of power and power factor of such application has not been clearly defined, which has drawn attention o... View full abstract»

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