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IEEE Transactions on Circuits and Systems II: Express Briefs

Issue 11 • Date Nov. 2005

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Displaying Results 1 - 25 of 29
  • Table of contents

    Publication Year: 2005, Page(s): c1
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  • IEEE Transactions on Circuits and Systems—II: Express Briefs publication information

    Publication Year: 2005, Page(s): c2
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  • On an inviable approach for derivation of 2-D stability tests

    Publication Year: 2005, Page(s):713 - 718
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (184 KB) | HTML iconHTML

    A tabular stability test for two-dimensional (2-D) discrete systems that was published in these Transaction is shown to be not correct. It is also shown that the claimed new method that it introduced to extend stability conditions from one-dimensional (1-D) to 2-D systems relies on a mathematically inviable argument. The paper tries to find a similar but correct algorithm and stability conditions.... View full abstract»

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  • Nonlinear dynamical systems control using a new RNN temporal learning strategy

    Publication Year: 2005, Page(s):719 - 723
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (240 KB)

    The ability of recurrent neural networks (RNN) to handle time-varying input/output through its own temporal operation is discussed. A new class of continuous-time (CT) RNN is proposed and it is proved that any finite time trajectory of a given n-dimensional dynamical CT system with input can be approximated by the internal state of the output units of an RNN. The proposed RNNs are extended for tem... View full abstract»

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  • A new compact temperature-compensated CMOS current reference

    Publication Year: 2005, Page(s):724 - 728
    Cited by:  Papers (40)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (240 KB) | HTML iconHTML

    This paper describes a new circuit integrated on silicon, which generates temperature-independent bias currents. Such a circuit is firstly employed to obtain a current reference with first-order temperature compensation, then it is modified to obtain second-order temperature compensation. The operation principle of the new circuits is described and the relationships between design and technology p... View full abstract»

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  • Wide dynamic range snapshot APS for ultra low-power applications

    Publication Year: 2005, Page(s):729 - 733
    Cited by:  Papers (5)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (592 KB) | HTML iconHTML

    A novel wide dynamic range (WDR) snapshot active pixel sensor for ultra-low power applications is presented. The proposed imager allows capturing of fast moving objects in the field of view and provides WDR by applying adaptive exposure time to each pixel, according to the local illumination intensity level. Driven by low-power dissipation requirements, the proposed pixel is operated by dual low v... View full abstract»

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  • Hybrid mode-switched control of DC-DC boost converter circuits

    Publication Year: 2005, Page(s):734 - 738
    Cited by:  Papers (21)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB) | HTML iconHTML

    This paper has proposed a new switching scheme for controlling dc-dc boost converter circuits. The converter is represented as a hybrid system with three modes of operation. The switching among these modes is governed by the adjustable reference voltage and a reference current which are calculated by an energy balance principle. The scheme has been applied to a realistic converter circuit modeled ... View full abstract»

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  • Quasi-orthogonal chaotic CDMA multi-user detection using optimal chaos synchronization

    Publication Year: 2005, Page(s):739 - 743
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB) | HTML iconHTML

    In this paper, a novel optimal chaos synchronization (CS)-based method is proposed to realize multi-user detection of quasi-orthogonal chaotic code-division multiple access (CDMA) system. Theoretical analysis and computer simulations show that the multi-user quasi-orthogonal chaotic signal used in the CDMA system can be detected successfully by using the optimal CS. . Computer simulations show tha... View full abstract»

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  • Detecting infinite zeros in polynomial matrices

    Publication Year: 2005, Page(s):744 - 745
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (75 KB) | HTML iconHTML

    A simple necessary and sufficient algebraic condition is given to detect zeros at infinity in a polynomial matrix. View full abstract»

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  • Extensible supply voltage control mechanism for low power array structure design

    Publication Year: 2005, Page(s):746 - 750
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB) | HTML iconHTML

    A novel supply voltage switching control mechanism, called D-logic, for reducing power dissipation of array structures is presented. With this D-logic mechanism, the supply voltage levels are successively activated by external clock signal in the direction of signal propagation, which eliminates power dissipated by the glitches. The mechanism is easily incorporated with minimal circuit change in t... View full abstract»

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  • Adaptive lossless image coding using least squares optimization with edge-look-ahead

    Publication Year: 2005, Page(s):751 - 755
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (768 KB) | HTML iconHTML

    In predictive image coding, the least squares (LS)-based adaptive predictor is noted as an efficient method to improve prediction result around edges. However pixel-by-pixel optimization of the predictor coefficients leads to a high coding complexity. To reduce computational complexity, we activate the LS optimization process only when the coding pixel is around an edge or when the prediction erro... View full abstract»

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  • An adaptation procedure on envelope statistics for predistorter designs based on statistical modeling methods

    Publication Year: 2005, Page(s):756 - 760
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (184 KB) | HTML iconHTML

    There have long been some experiment findings that the behavior of a power amplifier (PA) to digitally modulated stimuli depends on its input statistics. Correspondingly, there have been efforts in characterizing PA behaviors and, more recently, in designing amplifier linearization devices by including the information of envelope statistics or using statistical methods. Superior performance have b... View full abstract»

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  • Global exponential convergence of multitime-scale neural networks

    Publication Year: 2005, Page(s):761 - 765
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (184 KB) | HTML iconHTML

    In this paper, we investigate the convergence and stability of a neural network model with different time scales, which models the activity of cortical cognitive maps. We provide a theoretic condition for global exponential convergence of the solutions of the network, which is proved weaker than some existing results in the literature. We also introduce time-varying delays with less constraints in... View full abstract»

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  • Design procedure for two-stage CMOS operational amplifiers employing current buffer

    Publication Year: 2005, Page(s):766 - 770
    Cited by:  Papers (24)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (224 KB) | HTML iconHTML

    The design procedure of the two-stage CMOS operational amplifiers employing Miller capacitor in conjunction with the common-gate current buffer is presented. Unlike the previously reported design strategy of the opamp of this type, which results in the opamp with a pair of nondominant complex conjugate poles and a finite zero, the proposed procedure is based upon the design strategy that results i... View full abstract»

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  • Quadrature ΣΔ modulators with a dynamic element matching scheme

    Publication Year: 2005, Page(s):771 - 775
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (272 KB) | HTML iconHTML

    This paper presents a new topology of a multibit quadrature bandpass sigma-delta modulator which employs a simple dynamic element matching (DEM) technique in order to reduce the effects of path mismatch, namely aliasing in the signal band of the mirror images of the signal and of the quantization noise. The DEM scheme results in a reduction of the aliasing of the quantization noise mirror image wh... View full abstract»

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  • Transconductance amplifier with low-power consumption

    Publication Year: 2005, Page(s):776 - 779
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (144 KB) | HTML iconHTML

    A modified transconductance amplifier with low harmonic distortion and high current efficiency is proposed. It can be used in high-frequency applications up to 10 MHz. Each half of the transconductor differential input stage consists of a pair of transistors in saturation and linear regimes with a voltage feedback loop. Results of theoretical analysis are confirmed by SPICE simulations. View full abstract»

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  • A CMOS burst-mode optical transmitter for 1.25-Gb/s ethernet PON applications

    Publication Year: 2005, Page(s):780 - 783
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1112 KB) | HTML iconHTML

    This brief presents a CMOS burst-mode optical transmitter suitable for use in 1.25-Gb/s Ethernet passive optical network applications. Based on feedback from the monitoring photodiode, in order to control consecutive burst data the proposed transmitter in this brief uses a reset mechanism, which allows fast responses from the beginning of a high-speed input burst. The chip is fabricated in mixed-m... View full abstract»

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  • A modified architecture used for input matching in CMOS low-noise amplifiers

    Publication Year: 2005, Page(s):784 - 788
    Cited by:  Papers (23)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (560 KB) | HTML iconHTML

    An architecture used for input matching in CMOS low-noise amplifiers (LNAs) is investigated in this paper. In the proposed architecture, gate and source inductors, which are essential in the traditional source inductive degeneration CMOS LNAs, are either reduced or removed. The architecture is finally verified by a narrow-band LNA and a wide-band LNA operating at 2.4-2.5 and 5.1-5.9 GHz, respectiv... View full abstract»

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  • Influence of noise intensity on the spectrum of an oscillator

    Publication Year: 2005, Page(s):789 - 793
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (280 KB) | HTML iconHTML

    This paper investigates the influence of high-intensity noise on the correlation spectrum of a two-dimensional (2-D) nonlinear oscillator. An exact analytical solution for the correlation spectrum of this 2-D oscillator is provided. The analytical derivations are well suited for oscillators with white noise of any intensity, but computational constraints on the solution of the partial differential... View full abstract»

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  • System-level test and yield improvement for optoelectronic-VLSI chips

    Publication Year: 2005, Page(s):794 - 797
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB) | HTML iconHTML

    Some of the unique issues involved in testing transmitter and receiver circuits for optoelectronic-very-large-scale-integrated (OE-VLSI) applications are reviewed. In particular, the problem of testing OE-VLSI chips prior to optoelectronic device integration is outlined. Based on circuit-level approaches such as fault sensitization and novel system-level testing methodologies, the first OE-VLSI ch... View full abstract»

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  • Finite-time tracking controller design for nonholonomic systems with extended chained form

    Publication Year: 2005, Page(s):798 - 802
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (160 KB) | HTML iconHTML

    A design scheme of the finite-time tracking controller is given for the nonholonomic systems with extended chained form. The relay switching technique and the terminal sliding mode control scheme with finite-time convergence are used to the design of the controller. The global stability is guaranteed and the system states accurately track the states of the reference model in finite time. The simul... View full abstract»

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  • Special issue on smart sensors

    Publication Year: 2005, Page(s): 803
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  • 2006 IEEE International Conference on Multimedia and Expo (ICME)

    Publication Year: 2005, Page(s): 804
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  • 2006 IEEE International Symposium on Circuits and Systems (ISCAS 2006)

    Publication Year: 2005, Page(s): 805
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  • 49th IEEE International Midwest Symposium on Circuits and Systems (MWSCAS 2006)

    Publication Year: 2005, Page(s): 806
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Aims & Scope

Part I will now contain regular papers focusing on all matters related to fundamental theory, applications, analog and digital signal processing. Part II will report on the latest significant results across all of these topic areas.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief

Chi K. Michael Tse
Dept. of Electronic and Information Engineering
Hong Kong Polytechnic University
Hunghom, Hong Kong
cktse@ieee.org