Now showing items 331-350 of 1055

  • 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 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 ...
  • FPGA Prototyping of A High Data Rate LTE Uplink Baseband Receiver 

    Wang, Guohui; Yin, Bei; Amiri, Kiarash; Sun, Yang; Wu, Michael; Cavallaro, Joseph R. (2009-11-01)
    The Third Generation Partnership Project (3GPP) Long Term Evolution (LTE) standard is becoming the appropriate choice to pave the way for the next generation wireless and cellular standards. While the popular OFDM ...
  • An FPGA-based Daughtercard for TIs C6000 family of DSKs 

    Gadhiok, Manik; Hardy, Ricky; Murphy, Patrick; Frantz, Patrick; Choi, Hyeokho; Cavallaro, Joseph R. (2005-06-01)
    In this paper we present an FPGA-based daughtercard designed for TIs C6000 family of DSP Starter Kits (DSKs). The hardware, initially designed for a course project, provides a platform for studying heterogeneous systems ...
  • A FPGA­Based Experimental PHY for 802.11b WLAN 

    Lou, Feifei; Murphy, Patrick; Frantz, Patrick (2003-10-20)
    The swift proliferation of wireless data communication systems, and the ever-increasing demand for faster data rates requires that engineers be able to quickly design, implement and test new wireless algorithms for data ...
  • Fractional Brownian motion and data traffic modeling: The other end of the spectrum 

    Vehel, Jacques; Riedi, Rudolf H. (1997-01-20)
    We analyze the fractal behavior of the high frequency part of the Fourier spectrum of fBm using multifractal analysis and show that it is not consistent with what is measured on real traffic traces. We propose two extensions ...
  • Frequency Domain Synthesis of Multivariable Linear Regulators 

    Cheng, Lin-Fu; Pearson, J.B. (1977-04-20)
    This paper considers a general class of multivariable linear regulators and determines conditions under which there exist proper controllers such that output regulation is achieved with internal stability.
  • Frequency-Domain ICI Estimation, Shortening, and Cancellation in OFDM Receivers 

    Sestok, Charles K.; Radosavljevic, Predrag (2006-04-01)
    Orthogonal frequency division multiplexing (OFDM) communication systems encounter performance limitations due to time-varying channels common in wireless applications. The channel variations introduce inter-carrier ...
  • Fundamental optical processes in armchair carbon nanotubes 

    Haroz, Erik H.; Duque, Juan G.; Tu, Xiaomin; Zheng, Ming; Walker, Angela R. Hight; Hauge, Robert H.; Doorn, Stephen K.; Kono, Junichiro (2013)
    Single-wall carbon nanotubes provide ideal model one-dimensional (1-D) condensed matter systems in which to address fundamental questions in many-body physics, while, at the same time, they are leading candidates for ...
  • A Further Investigation on AR-Vector Models for Text Independent Speaker Identification 

    Magrin-Chagnolleau, Ivan; Bimbot, Frederic (1996-01-01)
    In this paper, we investigate on the role of dynamic information on the performances of AR-vector models for speaker recognition. To this purpose, we design an experimental protocol that destroys the time structure of ...
  • Gas Sensing using Terahertz Time-Domain Spectroscopy 

    Mittleman, Daniel M.; Jacobsen, R. H.; Neelamani, Ramesh; Baraniuk, Richard G.; Nuss, Martin C. (1998-01-15)
    A method for detection and identification of polar gases and gas mixtures based on the technique of terahertz time-domain spectroscopy is presented. This relatively new technology promises to be the first portable far-infared ...
  • A General Hardware/Software Co-design Methodology for Embedded Signal Processing and Multimedia Workloads 

    Brogioli, Michael; Radosavljevic, Predrag; Cavallaro, Joseph R. (2006-11-01)
    This paper presents a hardware/software co-design methodology for partitioning real-time embedded multimedia applications between software programmable DSPs and hardware based FPGA coprocessors. By following a strict set ...
  • Generalized Beamforming for MIMO Systems with Limited Transmitter Information 

    Mukkavilli, Krishna Kiran; Sabharwal, Ashutosh; Aazhang, Behnaam (2003-11-20)
    In this work, we investigate the outage performance of beamforming schemes in wireless systems equipped with multiple transmit and receive antennas. In particular, we analyze the outage performance of unit rank beamforming ...
  • Generalized Digital Butterworth Filter Design 

    Selesnick, Ivan W.; Burrus, C. Sidney (1995-01-15)
    This paper presents a formula-based method for the design of IIR filters having more zeros than (nontrivial) poles. The filters are designed so that their square magnitude frequency responses are maximally-flat at <i>m</i> ...
  • Generalized Digital Butterworth Filter Design 

    Selesnick, Ivan W.; Burrus, C. Sidney (1996-01-15)
    This paper presents a formula-based method for the design of IIR filters having more zeros than (nontrivial) poles. The filters are designed so that their square magnitude frequency responses are maximally-flat at <i>m</i> ...
  • Generalized Joint Signal Representations and Optimum Detection 

    Sayeed, Akbar M.; Jones, Douglas L. (1996-01-20)
    Generalized joint signal representations (JSRs) extend the scope of joint time-frequency representations (TFRs) to a richer class of nonstationary signals, but their use, just as in the case of TFRs, has been primarily ...
  • Generalized likelihood ratio detection for fMRI using complex data 

    Nan, F.Y.; Nowak, Robert David (1999-04-20)
    The majority of fMRI studies obtain functional information using statistical tests based on the magnitude image reconstructions. Recently, a complex correlation (CC) test was proposed based on teh complex image data in ...
  • Generation of diffraction-free beams for applications in optical microlithography 

    Erdelyi, Miklos; Horvath, Zoltan L.; Szabo, Gabor; Bor, Zs.; Tittel, Frank K.; Cavallaro, Joseph R.; Smayling, Michael C. (1997-03-01)
    A new concept based on a Fabry–Perot interferometer for the generation of nondiffracting Bessel beams is described and proposed for potential applications in microlithography such as the fabrication of small isolated ...
  • Generation of nearly nondiffracting Bessel beams with a Fabry–Perot interferometer 

    Horvath, Zoltan L.; Erdelyi, Miklos; Szabo, Gabor; Bor, Zs.; Tittel, Frank K.; Cavallaro, Joseph R. (1997-11-01)
    A new concept for generating zero-order Bessel beams was studied theoretically. The spatial intensity distribution was calculated numerically using a wave optics model. Approximate analytical expressions were derived to ...
  • A Geometric Hidden Markov Tree Wavelet Model 

    Romberg, Justin; Wakin, Michael; Choi, Hyeokho; Baraniuk, Richard G. (2003-08-01)
    In the last few years, it has become apparent that traditional wavelet-based image processing algorithms and models have significant shortcomings in their treatment of edge contours. The standard modeling paradigm exploits ...