Now showing items 231-250 of 721

    • Fabrication of plasmonic nanoparticle structures on planar substrates 

      Lwin, Nyein Z. (2006)
      Studying the optical properties of coupled plasmonic systems is important for both fundamental understanding and optimization of plasmon-enhanced optical sensing applications such as surface enhanced Raman scattering (SERS), ...
    • Failure Mode Analysis of a Proposed Manipulator-based Hazardous Material Retrieval System 

      Cavallaro, Joseph R.; Walker, Ian D. (1997-04-01)
      Failure mode and reliability analysis is particularly important for robot manipulators to be deployed in remote environments, where inspection and repair are diffcult, and reliability is of prime importance. This is ...
    • FAR-INFRARED PHOTOCONDUCTIVITY IN HIGH PURITY EPITAXIAL INDIUM-PHOSPHIDE 

      LAU, KEI MAY (1981)
      Far-infrared photoconductivity from shallow donors in n-type InP was studied using Fourier transform spectroscopy. The 1s to 2p transition frequency was found to be 45.5 (+OR-) 0.2 cm('-1) in zero magnetic field. Spectral ...
    • Fast computation of the sliding-window Radon transform with application to attribute extraction 

      Steeghs, Philippe (1999-01-15)
      We have developed a fast and robust algorithm for the extraction of 3-D seismic attributes. The algorithm is based on the recursive computation of the 3-D sliding-window Radon transform. Considerable gain in computational ...
    • Fast Fourier transforms for constrained data 

      Sorensen, Henrik Vittrup (1988)
      This thesis develops several new algorithms for computing the discrete Fourier transform (DFT). The work describes algorithms for which a set of constraints on the input or the output allow the DFT to be computed more ...
    • Fast, Exact Synthesis of Gaussian and nonGaussian Long-Range-Dependent Processes 

      Crouse, Matthew; Baraniuk, Richard G. (1999-01-15)
      1/<i>f</i> noise and statistically self-similar processes such as fractional Brownian motion (fBm) are vital for modeling numerous real-world phenomena, from network traffic to DNA to the stock market. Although several ...
    • Fault-Tolerant VLSI Processor Array for the SVD 

      Cavallaro, Joseph R.; Near, Christopher D.; Uyar, M. Umit (1989-10-01)
      Dynamic reconfiguration techniques are presented for a two-dimensional systolic array for the SVD of a matrix. Extra computation time is not required, since idle time inherent in the array is exploited. The scheme does not ...
    • Feature Extraction Techniques for Classification and Identification of Spectral Signatures 

      de Figueiredo, Rui J.P. (1976-04-20)
      Some of the results obtained at Rice University on the extraction of features from spectral signatures for the purpose of classifying and identifying these signatures are described.
    • Feedback gain in Multiple Antenna Systems 

      Bhashyam, Srikrishna; Sabharwal, Ashutosh; Aazhang, Behnaam (2002-05-20)
      Multiple antenna transmission and reception have been shown to significantly increase the achievable data rates of wireless systems. However, most of the existing analysis assumes perfect or no channel information at the ...
    • FFT-Accelerated Iterative MIMO Chip Equalizer Architecture For CDMA Downlink 

      Guo, Yuanbin; McCain, Dennis; Cavallaro, Joseph R. (2005-03-01)
      In this paper, we present a novel FFT-accelerated iterative Linear MMSE chip equalizer in the MIMO CDMA downlink receiver. The reversed form time-domain matrix multiplication in the Conjugate Gradient iteration is accelerated ...
    • Finite Rate Feedback Design for Multiple Transmit Antennas 

      Mukkavilli, Krishna Kiran; Sabharwal, Ashutosh; Aazhang, Behnaam (2002-10-20)
      Many practical systems employ a feedback channel to convey the channel state information to the transmitter.The capacity of the feedback channels is usually limited to a few bits per frame. We design feedback based ...
    • Flexible N-Way MIMO Detector on GPU 

      Wu, Michael; Yin, Bei; Cavallaro, Joseph R. (2012-10-17)
      This paper proposes a flexible Multiple-Input Multiple-Output (MIMO) detector on graphics processing units (GPU). MIMO detection is a key technology in broadband wireless system such as LTE,WiMAX, and 802.11n. Existing ...
    • Flexible Wavelet Transforms Using Lifting 

      Claypoole, Roger L.; Baraniuk, Richard G. (1998-09-01)
      We introduce and discuss biorthogonal wavelet transforms using the lifting construction. The lifting construction exploits a spatial-domain, prediction-error interpretation of the wavelet transform and provides a powerful ...
    • Floating-Point CORDIC for Matrix Computations 

      Cavallaro, Joseph R.; Luk, Franklin T. (1988-10-01)
      The CORDIC algorithms provide a VLSI hardware technique for computing the inverse tangents and vector rotations needed by many matrix decomposition algorithms. Although normally stated for fixed-point arithmetic, the CORDIC ...
    • Focused terahertz waves generated by a phase velocity gradient in a parallel-plate waveguide 

      McKinney, Robert W.; Monnai, Yasuaki; Mendis, Rajind; Mittleman, Daniel (2015)
      We demonstrate the focusing of a free-space THz beam emerging from a leaky parallel-plate waveguide (PPWG). Focusing is accomplished by grading the launch angle of the leaky wave using a PPWG with gradient plate separation. ...
    • Four top reasons why mutual information does not assess neural information processing 

      Johnson, Don (2002-07-20)
      Mutual information between stimulus and response has been advocated as an information theoretic measure of a neural system's capability to process information. Once calculated, the result is a single number that supposedly ...
    • An FPGA Implementation Of Alamouti's Transmit Diversity Technique 

      Murphy, Patrick; Frantz, Patrick; Dick, Chris (2003-10-01)
      This paper presents the FPGA implementation of a multiple antenna wireless communications system based on Alamouti's transmit diversity scheme. Alamouti's transmit diversty scheme is a space-time block code with support ...
    • FPGA Implementation of Matrix Inversion Using QRD-RLS Algorithm 

      Karkooti, Marjan; Cavallaro, Joseph R.; Dick, Chris (2005-10-01)
      This paper presents a novel architecture for matrix inversion by generalizing the QR decomposition-based recursive least square (RLS) algorithm. The use of Squared Givens rotations and a folded systolic array makes this ...
    • FPGA Implementation of Matrix Inversion Using QRD-RLS Algorithm 

      Karkooti, Marjan; Cavallaro, Joseph R.; Dick, Chris (2005-11-01)
      This paper presents a novel architecture for matrix inversion by generalizing the QR decomposition-based recursive least square (RLS) algorithm. The use of Squared Givens rotations and a folded systolic array makes this ...
    • FPGA in Wireless Communications Applications 

      Amiri, Kiarash; Duarte, Melissa; Cavallaro, Joseph R.; Dick, Chris; Rao, Raghu; Sabharwal, Ashutosh (2012-07-12)
      In the past decade we have witnessed explosive growth in the wireless communications industry with over 4 billion subscribers worldwide. While first and second generation systems focused on voice communications, third ...