Now showing items 73-92 of 268

  • Failure Mode Analysis for a Hazardous Waste Clean-up Manipulator 

    Walker, Ian D.; Cavallaro, Joseph R. (Elsevier Science Limited, 1996-05-01)
    This paper describes the application of Fault Tree Analysis to the design phase of a robot manipulator for hazardous waste retrieval. The robot is to be deployed in single-shell under-ground storage tanks at the US Department ...
  • Failure Mode Analysis of a Proposed Manipulator-based Hazardous Material Retrieval System 

    Cavallaro, Joseph R.; Walker, Ian D. (American Nuclear Society, 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 ...
  • A Fast Algorithm and Testbed Evaluation for Sound Source Localization Using Sensor Networks 

    Johnston, Brian; Yin, Xiaoming; Valenzuela, Adrian; Frantz, Patrick (2005-09-01)
    The theoretical idea of a network composed of small, low-cost sensor nodes able to localize the source of acoustic events has the potential to make a multitude of exciting applications possible. However, this potential can ...
  • Fast Multi-user Detector for a Time-varying CDMA System 

    Das, Suman; Cavallaro, Joseph R.; Aazhang, Behnaam (SPIE, 1997-07-01)
    This paper investigates methods to reduce the amount of computation needed to detect information bits using a linear detector for a CDMA system. We show windowing technique coupled with pipelining can reduce the amount of ...
  • Fault Detection and Fault Tolerance in Robotics 

    Visinsky, Monica L.; Walker, Ian D.; Cavallaro, Joseph R. (1991-07-01)
    Robots are used in inaccessible or hazardous environments in order to alleviate some of the time, cost and risk involved in preparing men to endure these conditions. In order to perform their expected tasks, the robots ...
  • Fault Residual Generation via Nonlinear Analytical Redundancy 

    Leuschen, Martin L.; Walker, Ian D.; Cavallaro, Joseph R. (IEEE, 2005-05-01)
    Fault detection is critical in many applications, and analytical redundancy (AR) has been the key underlying tool for many approaches to fault detection. However, the conventional AR approach is formally limited to linear ...
  • Fault Tolerant Algorithms and Architectures for Robotics 

    Hamilton, D. L.; Visinsky, Monica L.; Bennett, J. K.; Cavallaro, Joseph R.; Walker, Ian D. (IEEE, 1994-04-01)
    As robot tasks in space, nuclear, and medical environments become more widespread, the issues of reliability and safety for robots are becoming more critical. Attempts to address these issues have resulted in a a recent ...
  • Fault-Tolerant VLSI Processor Array for the SVD 

    Cavallaro, Joseph R.; Near, Christopher D.; Uyar, M. Umit (IEEE Computer Society Press, 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 ...
  • 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 element analysis of the use of temperature feedback for control of laser coagulation in biological tissue 

    Glenn, Tami Neal (1994)
    Study of thermal damage processes in laser irradiated tissue can provide further insight into the determination of optimal coagulation procedures. Arrhenius rate thermal damage processes are sensitive to tissue damage ...
  • Flex-Sphere: An FPGA Configurable Sort-Free Sphere Detector For Multi-user MIMO Wireless Systems 

    Amiri, Kiarash; Dick, Chris; Rao, Raghu; Cavallaro, Joseph R. (SDR Forum, 2008-10-01)
    Spatial division multiplexing (SDM) in MIMO technology significantly increases the spectral efficiency, and hence capacity, of a wireless communication system: it is a core component of the next generation wireless systems, ...
  • A Flexible LDPC/Turbo Decoder Architecture 

    Sun, Yang; Cavallaro, Joseph R. (Springer, 2011-07-01)
    Low-density parity-check (LDPC) codes and convolutional Turbo codes are two of the most powerful error correcting codes that are widely used in modern communication systems. In a multi-mode baseband receiver, both LDPC ...
  • Flexible N-Way MIMO Detector on GPU 

    Wu, Michael; Yin, Bei; Cavallaro, Joseph R. (IEEE Computer Society, 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 ...
  • Floating-Point CORDIC for Matrix Computations 

    Cavallaro, Joseph R.; Luk, Franklin T. (IEEE Computer Society Press, 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 ...
  • FPGA Implementation of Dynamic Threshold Sphere Detection for MIMO Systems 

    Amiri, Kiarash; Cavallaro, Joseph R. (IEEE, 2006-11-01)
    In this paper, we consider the FPGA implementation of a modified sphere detection algorithm. We analyze breadth-first and depth-first search in sphere detection, and compare the relative performance and complexity. Based ...
  • 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 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 (Elsevier, Waltham, MA, 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. (IEEE, 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 ...
  • A General Hardware/Software Co-design Methodology for Embedded Signal Processing and Multimedia Workloads 

    Brogioli, Michael; Radosavljevic, Predrag; Cavallaro, Joseph R. (IEEE, 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 ...