Now showing items 483-502 of 1897

    • A DSP-Based Platform for Wireless Video Compression 

      Murphy, Patrick; Bharadwaj, Vinay; Welsh, Erik; Frantz, Patrick (2002-11-01)
      With the exponential growth of wireless voice markets, demand for wireless video services is soon to follow. However, bandwidth limited wireless channels coupled with mobility issues pose a great challenge in the hardware, ...
    • Dual Problems in Power Control 

      Sabharwal, Ashutosh; Rajan, Dinesh; Aazhang, Behnaam (2001-10-20)
      In this paper, we study power control to minimize packet loss for delay-bounded transmission of bursty sources over Gaussian channels and transmission of constant rate sources over time-varying block fading channels. In ...
    • Dual Wi-Fi: Dual Channel Wi-Fi for Congested WLANs with Asymmetric Traffic Loads 

      Flores Miranda, Adriana (2013-10-08)
      In many WLANs scenarios, the load transmitted from the AP to the clients (Downlink), far outweighs traffic demand from the clients to the AP (Uplink), thereby yielding traffic asymmetry. Moreover, when many clients associate ...
    • Dual-feedback mid-infrared cavity-enhanced absorption spectroscopy for H2CO detection using a radio-frequency electrically-modulated interband cascade laser 

      He, Qixin; Zheng, Chuantao; Lou, Minhan; Ye, Weilin; Wang, Yiding; Tittel, Frank K. (2018)
      A mid-infrared cavity-enhanced sensor system was demonstrated for the detection of formaldehyde (H2CO) using a continuous-wave (cw) interband cascade laser (ICL) centered at 3599 nm. A compact Fabry-Perot (F-P) cavity with ...
    • Dual-frequency modulation and range disambiguation in laser rangefinding systems 

      Melton, Darren (1994)
      Laser rangefinders, which measure distances by detecting the phase shift of intensity modulated laser light reflected by objects, are very useful for obtaining 3-D models of the surrounding environment. A drawback of ...
    • The Dual-Tree Complex Wavelet Transform 

      Selesnick, Ivan W.; Baraniuk, Richard G.; Kingsbury, Nicholas G. (2005-11-01)
      The paper discusses the theory behind the dual-tree transform, shows how complex wavelets with good properties can be designed, and illustrates a range of applications in signal and image processing. The authors use the ...
    • Dual-Vth Independent-Gate FinFETs for Low Power Logic Circuits 

      Rostami, Masoud; Mohanram, Kartik (2011-03)
      This paper describes the electrode work-function, oxide thickness, gate-source/drain underlap, and silicon thickness optimization required to realize dual-Vth independent-gate FinFETs. Optimum values for these FinFET ...
    • Dyadic decision trees 

      Scott, Clayton (2004)
      This thesis introduces a new family of classifiers called dyadic decision trees (DDTs) and develops their theoretical properties within the framework of statistical learning theory. First, we show that DDTs achieve optimal ...
    • Dye-Assisted Gain of Strongly Confined Surface Plasmon Polaritons in Silver Nanowires 

      Paul, Aniruddha; Zhen, Yu-Rong; Wang, Yi; Chang, Wei-Shun; Xia, Younan; Nordlander, Peter; Link, Stephan (2014)
      Subwavelength confinement and active control of light is essential for nanoscale communication devices at visible frequencies that support large bandwidths.[1-5] Noble-metal nanostructures present an excellent platform for ...
    • Dynamic fault detection and intelligent fault tolerance for robotics 

      Visinsky, Monica Lynn (1994)
      As robotics has begun to spread from the accessible arenas of laboratories and industry into more dangerous and remote environments such as space or hazardous waste remediation tanks, the need for autonomous and intelligent ...
    • Dynamic Fault Reconfigurable Intelligent Control Architectures for Robotics 

      Cavallaro, Joseph R.; Walker, Ian D. (1993-04-01)
      In this paper we describe new progress in our development of an Intelligent Control Framework for robots which dynamically reconfigures itself to cope with faults in either sensors or joint hardware. The Framework is ...
    • A Dynamic Fault Tolerance Framework for Remote Robots 

      Visinsky, Monica L.; Cavallaro, Joseph R.; Walker, Ian D. (1995-08-01)
      Fault tolerance is increasingly important for robots, especially those in remote or hazardous environments. Robots need the ability to effectively detect and tolerate internal failures in order to continue performing their ...
    • Dynamic Franz-Keldysh effect and its applications 

      Srivastava, Ajit (2003)
      In this dissertation we study the dynamic Franz-Keldysh effect (DFKE) in GaAs. We observe the salient features of DFKE viz., below bandgap absorption and oscillations above the band gap, in our experiments. We also report ...
    • Dynamic Memory Interconnections for Rapid Access 

      Iyer, Bala; Sinclair, J. Bartlett (1980-11-01)
      Certain aspects of bulk storage technology development have required the study of dynamic memory interconnections. Various schemes to interconnect physical storage locations have been proposed in the literature. Taking ...
    • DYNAMIC REASSIGNMENT IN DISTRIBUTED PROCESSING SYSTEMS 

      SINCLAIR, JAMES BARTLETT (1979)
    • Dynamic Senor-Based Fault Detection for Robots 

      Visinsky, Monica L.; Cavallaro, Joseph R.; Walker, Ian D. (1993-09-01)
      Fault detection and fault tolerance are increasingly important for robots in space or hazardous environments due to the dangerous and often inaccessible nature of these environs. We have previously developed algorithms to ...
    • Dynamically reconfigurable data caches in low-power computing 

      Brogioli, Michael C. (2003)
      In order to curb microprocessor power consumption, we propose an L1 data cache which can be reconfigured dynamically at runtime according to the cache requirements of a given application. A two phase approach is used ...
    • Edge Characteristics in Wavelet-Based Image Coding 

      Wakin, Michael (2001-04-20)
      Accurate prediction of wavelet coefficients relies on an understanding of the phase effects of edge alignment. This research examines techniques for uncovering edge information based on the available coefficients. These ...
    • Edge Localized Image Sharpening via Reassignment with Application to Computed Tomography 

      Dorney, Timothy D.; Bhashyam, Srikrishna; Doran, Andrew; Choi, Hyeokho; Flandrin, Patrick; Baraniuk, Richard G. (2000-07-01)
      Traditional filtering methods operate on the entire signal or image. In some applications, however, errors are concentrated in specific regions or features. A prime example is images generated using computed tomography. ...
    • Edge-based inference, control, and DoS resilience for the Internet 

      Kuzmanovic, Aleksandar (2004)
      Realizing new services on the Internet ultimately requires edge-based solutions for both deployability and scalability. Each such solution has two fundamental aspects. The first is the ability to accurately infer critical ...