First NASA/ESA Conference on Adaptive Hardware and Systems (AHS'06)

15-18 June 2006

Filter Results

Displaying Results 1 - 25 of 79
  • First NASA/ESA Conference on Adaptive Hardware and Systems - Cover

    Publication Year: 2006, Page(s): c1
    Request permission for reuse | PDF file iconPDF (286 KB)
    Freely Available from IEEE
  • First NASA/ESA Conference on Adaptive Hardware and Systems - Title

    Publication Year: 2006, Page(s):i - iii
    Request permission for reuse | PDF file iconPDF (172 KB)
    Freely Available from IEEE
  • First NASA/ESA Conference on Adaptive Hardware and Systems - Copyright

    Publication Year: 2006, Page(s): iv
    Request permission for reuse | PDF file iconPDF (98 KB)
    Freely Available from IEEE
  • First NASA/ESA Conference on Adaptive Hardware and Systems - TOC

    Publication Year: 2006, Page(s):v - xi
    Request permission for reuse | PDF file iconPDF (209 KB)
    Freely Available from IEEE
  • Preface

    Publication Year: 2006, Page(s): xii
    Request permission for reuse | PDF file iconPDF (196 KB) | HTML iconHTML
    Freely Available from IEEE
  • Conference organizers

    Publication Year: 2006, Page(s): xiii
    Request permission for reuse | PDF file iconPDF (188 KB)
    Freely Available from IEEE
  • Program Committee

    Publication Year: 2006, Page(s): xiv
    Request permission for reuse | PDF file iconPDF (186 KB)
    Freely Available from IEEE
  • Adaptive Multifunctional Circuits and Systems for Future Generations of Wireless Communications

    Publication Year: 2006, Page(s):3 - 11
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (402 KB) | HTML iconHTML

    By sharing building blocks between different applications and standards, portable wireless devices gain advantage over their predecessors: they use a smaller chip area, consume less power, and have a potential for lower overall cost. This requires the development of adaptive circuits and systems that are able to trade off power consumption for performance on the fly. Realization of the adaptivity ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A Self-Tuning Analog Proportional-Integral-Derivative (PID) Controller

    Publication Year: 2006, Page(s):12 - 19
    Cited by:  Papers (20)  |  Patents (2)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (387 KB) | HTML iconHTML

    We present a platform for implementing low power self-tuning analog proportional-integral-derivative controllers. By using a model-free tuning method, the platform overcomes problems typically associated with reconfigurable analog arrays. Unlike a self-tuning digital PID controller, our prototype controller combines the advantages of low power, no quantization noise, high bandwidth and high speed.... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A Tuning Technique for Switched-Capacitor Circuits

    Publication Year: 2006, Page(s):20 - 23
    Cited by:  Papers (2)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (321 KB) | HTML iconHTML

    A simple technique is proposed to adjust coefficients of transfer functions in switched-capacitor circuits. Transfer-function-coefficients are defined by capacitor-values considering full-charge transfer among capacitors. The proposed tuning technique in this paper is based on adjusting the amount of charge transferred from one capacitor to next capacitor. By all means, the net charge transferred ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A Background Mismatch Calibration For Capacitive Digitial-To-Analog Converters RTERS

    Publication Year: 2006, Page(s):24 - 27
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (196 KB) | HTML iconHTML

    This paper presents a background mismatch-calibration method for a capacitive digital-to-analog-converter (CDAC). The linearity of a CDAC depends on the mismatch of the capacitors. In a CDAC, every bit activates the corresponding capacitor-bank (CB). Therefore, there are the same number of CBs as the number of bits. In reality, it is very important to match the current CB with the rest least-signi... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Temperature-Adaptive Circuits on Reconfigurable Analog Arrays

    Publication Year: 2006, Page(s):28 - 31
    Cited by:  Papers (5)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (387 KB) | HTML iconHTML

    This paper describes a new reconfigurable analog array (RAA) architecture and integrated circuit (IC) used to map analog circuits that can adapt to extreme temperatures under programmable control. Algorithm-driven adaptation takes place on the RAA IC. The algorithms are implemented in a separate field programmable gate array (FPGA) IC, co-located with the RAA in the extreme temperature environment... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A Modular Framework for the Evolution of Circuits on Configurable Transistor Array Architectures.

    Publication Year: 2006, Page(s):32 - 42
    Cited by:  Papers (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (926 KB) | HTML iconHTML

    This paper gives an overview over the progress that has been made by the Heidelberg FPTA group within the field of analog evolvable hardware. Achievements are the design of a CMOS configurable transistor array (FPTA), the development of evolutionary algorithms (EAs) for analog circuit synthesis and the implementation of a modular framework, which makes it possible to use various substrates and sim... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Adaptive Micro-Antenna on Silicon Substrate

    Publication Year: 2006, Page(s):43 - 50
    Cited by:  Papers (2)  |  Patents (5)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (936 KB) | HTML iconHTML

    Adaptive antenna technology represents the most advanced smart antenna approach to date. Using a variety of new signal-processing algorithms, the adaptive system takes advantage of its ability to effectively locate and track various types of signals to dynamically minimize interference and maximize intended signal reception. This paper presents the design and development of a micro-antenna for SoC... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Using Hardware-Based Particle Swarm Method for Dynamic Optimization of Adaptive Array Antennas

    Publication Year: 2006, Page(s):51 - 58
    Cited by:  Papers (11)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (523 KB) | HTML iconHTML

    The following article describes and discusses the suitability of the particle swarm optimization (PSO) for the employment with blind adaptation of the directional characteristic of array antennas. By means of extensive simulations it was confirmed that the suggested PSO is able to follow dynamic changes in the environment. Based on these results a concept is discussed for a high-parallel optimizin... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Systolic Array Based Adaptive Beamformer Modeling in SystemC Environment

    Publication Year: 2006, Page(s):59 - 66
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (3293 KB) | HTML iconHTML

    Optimal weight extraction of beamforming algorithms based on systolic structures have been the subject of various researches since the well-known article presented by Gentleman and Kung (1981) on recursive least squares systolic arrays. Systolic algorithms are parallel and fully pipelined structures, this feature improves the performance of the beamforming algorithms and the system. SystemC is a s... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Automatic Alignment of Multiple Optical Components Using Genetic Algorithm

    Publication Year: 2006, Page(s):67 - 73
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (4270 KB) | HTML iconHTML

    We propose and demonstrate a method of automatic alignment for multiple optical components using a genetic algorithm. The connection between two optical components requires extremely precise alignment in the order of sub-micron-meters. It, therefore, typically takes an experienced technician around 30 to 60 minutes to manually align optical components. Although automatic fiber alignment systems ar... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Woofer-Tweeter Adaptive Optics Test Bench

    Publication Year: 2006, Page(s):74 - 80
    Cited by:  Papers (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (430 KB) | HTML iconHTML

    This paper describes the status of a Woofer-Tweeter (W/T) adaptive optics (AO) test bench that is developed at the University of Victoria, BC, Canada. The purpose of the UVic W/T AO bench with regards to the thirty meter telescope (TMT) project, the description of the W/T AO bench components, the hot air turbulence generator, the working principle and performance estimates from the system model of... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Switchable Glass: A Possible Medium for Evolvable Hardware

    Publication Year: 2006, Page(s):81 - 87
    Cited by:  Papers (2)  |  Patents (2)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (228 KB) | HTML iconHTML

    The possibility of using switchable glass (also called smart windows) technology for evolvable hardware tasks is suggested in this paper. Switchable glass technology basically means controlling the transmission of light through windows by using electrical power. By applying a variable voltage to the window we can continuously vary the amount of transmitted light. Three existing technologies are re... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Evolvable Hardware Applied to Nanotechnology

    Publication Year: 2006, Page(s):88 - 96
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (533 KB) | HTML iconHTML

    This manuscript proposes the automatic design and synthesis of nanometer circuits and the optimization of molecular devices by the evolvable hardware technique. The potential of evolvable hardware is investigated by means of three different applications: synthesis of molecular electronic circuits, synthesis and optimization of quantum-dot cellular automata (QCA) and the optimization of OLED (organ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The Novel Stochastic Bernstein Method of Functional Approximation

    Publication Year: 2006, Page(s):97 - 100
    Cited by:  Papers (5)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (272 KB) | HTML iconHTML

    The stochastic Bernstein method (not to be confused with the Bernstein polynomials) is a novel and significantly improved non-polynomial global method of signal processing that is proving very useful for interpolating and for approximating data. It arose as an obvious extension of the work of Bernstein (it preserves some of the remarkable properties of the Bernstein polynomials). However, this ext... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An Adaptive Heuristic Filter for Acceleration

    Publication Year: 2006, Page(s):101 - 108
    Cited by:  Papers (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (309 KB) | HTML iconHTML

    We present an adaptive heuristic algorithm for data filtering aimed to measurements of accelerations for probes entering a planetary atmosphere. The filter is based on properties of the median and the quantiles, and its design takes into account the presupposed properties of the signal, in order to achieve a higher precision of the recovered signal. The adaptive parameter is the filtering window w... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Power Driven Reconfigurable Complex Continuous Wavelet Transform

    Publication Year: 2006, Page(s):109 - 113
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (3084 KB) | HTML iconHTML

    A low power VLSI implementation of reconfigurable complex continuous wavelet transform (CWT) algorithm to generate the two dimensional time scale representation of a one dimensional signal is introduced. The CWT is computationally intensive process. The CWT processor presented in this paper employs a bank of correlators. The correlators which are not needed in a certain transform are disabled to s... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Self-Configurable Neural Network Processor for FIR Filter Applications

    Publication Year: 2006, Page(s):114 - 121
    Cited by:  Papers (2)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (288 KB) | HTML iconHTML

    A self-configurable system is one that is designed primarily for the purpose of reconfigurable control and adaptive signal processing. It evolves by restructures and readjustments back and forth which can track the environment and the system variation in time. Processing methods and application areas include but not limited to transmission enhancement such as filtering, equalization, and noise can... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A New State Space Representation Method for Adaptive Log Domain Systems

    Publication Year: 2006, Page(s):122 - 128
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (155 KB) | HTML iconHTML

    In this paper, a new method for the state space representation of a system is proposed, which is based on the companion form technique. It is very important to have almost equal coefficients of state space equations since their coefficients are proportional to devices' currents or voltages, e.g. transistors' currents for log domain filters. The method gives us the opportunity to choose two arbitra... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.