Now showing items 381-400 of 1757

    • Design of the Transit Access Point Hardware Platform 

      Murphy, Patrick; Frantz, Patrick; Aazhang, Behnaam (2005-09-01)
      Our objective is to design, analyze, prototype and experimentally study the theoretical underpinnings for a wireless internet that simultaneously achieves deployability, scalability, high performance and a cost-effective ...
    • Design of Training Data Based Quadratic Detectors with Application to Mechanical Systems 

      Rizzoni, Giorgio; Sayeed, Akbar M.; Jones, Douglas L. (1996-01-20)
      Reliable detection of engine knock is an important issue in the design and maintenance of high performance internal combustion engines. Cost considerations dictate the use of vibration signals, measured at the engine ...
    • Design of WARP: A Wireless Open-Access Research Platform 

      Murphy, Patrick; Sabharwal, Ashutosh; Aazhang, Behnaam (2006-09-01)
      This paper presents the design of WARP, a custom platform for research in advanced wireless algorithms and applications. The platform consists of both custom hardware and FPGA implementations of key communications blocks. ...
    • Design space exploration for real-time embedded stream processors 

      Rajagopal, Sridhar; Cavallaro, Joseph R.; Rixner, Scott (2004-07-01)
      We present a design framework for rapidly exploring the design space for stream processors in real-time embedded systems. Stream processors enable hundreds of arithmetic units in programmable pro-cessors by using clusters ...
    • Design Techniques for Robust Analog Signal Acquisition 

      Singal, Vikas (2012-10-02)
      The random demodulator architecture is a compressive sensing based receiver that allows the reconstruction of frequency-sparse signals from measurements acquired at a rate below the signal’s Nyquist rate. This in turn ...
    • Design, Implementation and Characterization of a Cooperative Communications System 

      Murphy, Patrick O. (2011)
      Cooperative communications is a class of techniques which seek to improve reliability and throughput in wireless systems by pooling the resources of distributed nodes. While cooperation can occur at different network layers ...
    • Detecting Events From Twitter In Real-Time 

      Zhao, Siqi (2013-09-16)
      Twitter is one of the most popular online social networking sites. It provides a unique and novel venue of publishing: it has over 500 million active users around the globe; tweets are brief, limited to 140 characters, an ...
    • Detecting Periodic Behavior in Nonstationary Signals 

      Venkatachalam, Vidya; Aravena, Jorge.L. (1998-10-20)
      This paper presents results on the multiresolution analysis of nonstationary signals with the objective of detecting underlying periodic phenomena. Wavelet packet analysis with coefficient thresholding is the basis for the ...
    • Detection and estimation with compressive measurements 

      Baraniuk, Richard G.; Davenport, Mark A.; Wakin, Michael B. (2006-11-01)
      The recently introduced theory of compressed sensing enables the reconstruction of sparse or compressible signals from a small set of nonadaptive, linear measurements. If properly chosen, the number of measurements can ...
    • Detection of Target Speakers in Audio Databases 

      Magrin-Chagnolleau, Ivan; Rosenberg, Aaron; Parthasarathy, S. (1999-01-15)
      The problem of speaker detection in audio databases is addressed in this paper. Gaussian mixture modeling is used to build target speaker and background models. A detection algorithm based on a likelihood ratio calculation ...
    • DETERMINATION OF MOTION PARAMETERS OF A MOVING OBJECT FROM MOVING CAMERA DATA 

      FOTEDAR, SUNIL (1987)
      The determination of 3-D motion parameters of an object from its image-sequences is discussed for three types of motion analysis: (1) monocular vision, (2) stereo vision, and (3) stereo motion. These parameters of the ...
    • Development and characterization of XUV xenon laser 

      Wu, Jun (1994)
      Short wavelength lasers have many potential scientific and engineering applications. The goal of this research is to develop and improve a practical XUV Xe laser, and to use it for XUV holographic imaging. Measurements on ...
    • Development of a coherent THz magneto-spectroscopy system 

      Wang, Xiangfeng (2006)
      We have developed a coherent time-domain THz magneto-spectroscopy system. It can be used for measuring the refractive index, complex conductivities, and cyclotron resonance of different semiconductor structures as well as ...
    • Development of compact DSP based mid-infrared quantum cascade laser spectrometers 

      So, Stephen G. (2005)
      This thesis describes the development of digital signal processor (DSP) and quantum cascade laser (QCL) technology for compact, standalone, integrated, trace gas sensors capable of gas sensing at part-per-billion (ppb) ...
    • Development of Digital Signal Processor controlled Quantum Cascade Laser based Trace Gas Sensor Technology 

      So, Stephen; Wysocki, Gerard; Frantz, Patrick; Tittel, Frank K. (2006-08-01)
      This work reports the design and integration of a custom digital signal processor (DSP) system into a pulsed quantum cascade laser (QCL) based trace gas sensor to improve its portability, robustness and operating performance. ...
    • Development of Japanese-language DSP Education Content in the Connexions Project 

      Frantz, Patrick; Yamada, Yoji (2005-10-01)
      Due to factors such as a small and fragmented market and rapid hardware development, the conventional textbook is inadequate for DSP lab education. Freely available open-content materials that enable and promote local ...
    • Dialogue Concerning Neural Coding and Information Theory 

      Johnson, Don (2003-08-20)
      The relations between information theory and neural coding are discussed by two researchers, one knowledgeable in information theory, the other in neuroscience. The classic information-theoretic notions of entropy, mutual ...
    • Diameter dependence of TO phonon frequencies and the Kohn anomaly in armchair single-wall carbon nanotubes 

      Telg, Hagen; Hároz, Erik H.; Duque, Juan G.; Tu, Xiaomin; Khripin, Constantine Y.; Fagan, Jeffrey A.; Zheng, Ming; Kono, Junichiro; Doorn, Stephen K. (2014)
      We present resonant Raman scattering experiments on nanotube samples enriched in metallic armchair single-wall carbon nanotubes (SWCNTs). We establish the transverse optical (ATO) phonon frequency for the (5,5) through ...
    • Dicke superradiance in solids [Invited] 

      Cong, Kankan; Zhang, Qi; Wang, Yongrui; Noe, G. Timothy; Belyanin, Alexey; Kono, Junichiro (2016)
      Recent advances in optical studies of condensed matter systems have led to the emergence of a variety of phenomena that have conventionally been studied in the realm of quantum optics. These studies have not only deepened ...