Now showing items 187-206 of 1509

  • Cache management in scalable network servers 

    Pai, Vivek Sadananda (2000)
    For many users, the perceived speed of computing is increasingly dependent on the performance of network server systems, underscoring the need for high performance servers. Cost-effective scalable network servers can be ...
  • A Canonical Covariance Based Method for Generalized Joint Signal Representations 

    Jones, Douglas L.; Sayeed, Akbar M. (1996-04-20)
    Generalized joint signal representations extend the scope of joint time-frequency representations to a richer class of nonstationary signals. Cohen's marginal-based generalized approach is canonical from a distributional ...
  • The Capacity of Average and Peak Power Constrained Fading Channels with Channel Side Information 

    Khojastepour, Mohammad; Aazhang, Behnaam (2004-03-01)
    We derive the ergodic capacity of discrete-time fading channel with additive Gaussian noise subject to both peak and average power constraint. The average power can be interpreted as the cost that we incur to achieve a ...
  • Capacity of low power multiuser systems with antenna arrays 

    Muharemovic, Tarik (2005)
    In this thesis, we study wireless multiuser communication systems in the regime of low spectral efficiencies, where users and the multiple access point are equipped with antenna arrays. Our first contribution is to develop ...
  • CAPE - VLSI Implementation of a Systolic Processor Array: Architecture, Design and Testing 

    Hemkumar, Nariankadu D.; Kota, Kishore; Cavallaro, Joseph R. (1991-06-20)
    The SVD is an important matrix decomposition in many real-time signal processing, image processing and robotics applications. Special-purpose processor arrays can achieve significant speed-up over conventioinal architectures ...
  • Challenges in Computer Architecture Evaluation 

    Skadron, Kevin; Martonosi, Margaret; August, David; Hill, Mark; Lilja, David; Pai, Vijay S. (2003-08-20)
    A report to the US National Science Foundation argues that simulation and benchmarking technology will require a leap in capability within the next few years to maintain ongoing innovation in computer systems.
  • Channel equalization algorithms for MIMO downlink and ASIP architectures 

    Radosavljevic, Predrag (2004)
    Processors for mobile handsets in 3G cellular systems require: high speed, flexibility and low power dissipation. While computationally efficient, ASIC processors are often not flexible enough to support necessary variations ...
  • Channel Equalization Algorithms for MIMO Downlink and ASIP Architectures 

    Radosavljevic, Predrag (2004-04-01)
    Processors for mobile handsets in 3G cellular systems require: high speed, flexibility and low power dissipation. While computationally efficient, ASIC processors are often not flexible enough to support necessary ...
  • Channel Estimation and Signal Detection for Multi-Carrier CDMA Systems with Pulse-Shaping Filter 

    Borran, Mohammad Jaber; Varshney, Prabodh; Vilpponen, Hannu; Papadimitriou, Panayiotis (2003-05-20)
    We consider the problem of digital communication in a fading environment using the Multi-Carrier CDMA technology. By incorporating the effect of the pulse-shaping filter in the channel estimation and signal detection ...
  • Channel estimation for code division multiple access communication systems 

    Bensley, Stephen Edward (1994)
    We consider the estimation of channel parameters for code division multiple access (CDMA) communication systems operating over channels with either single or multiple propagation paths. We present two approaches for ...
  • Channel Estimation for Multirate DS-CDMA Systems 

    Sabharwal, Ashutosh; Mitra, Urbashi; Bhashyam, Srikrishna (2000-11-20)
    The problem of channel estimation for multiple data rate Direct-Sequence Code-Division Multiple-Acess (DS-CDMA) systems is addressed. The derived algorithms are suitable for both variable chipping rate and/or variable ...
  • Characterization of block memory operations 

    Calhoun, Michael (2006)
    Block memory operations are frequently performed by the operating system and consume an increasing fraction of kernel execution time. These operations include memory copies, page zeroing, interprocess communication, and ...
  • Characterization of Iron Doped Lithium Niobate for Holographic Storage Applications 

    Shah, Rajiv R.; Kim, Dae M.; Rabson, Thomas A.; Tittel, Frank K. (1976-06-20)
    A detailed study of eight systematically chosen Fe:LiNb0<sub>3</sub> crystals is presented. Correlation between the photorefractive sensitivity and various chemical properties of Fe:LiNb0<sub>3</sub> is investigated in ...
  • Charge-Dependent Transport Switching of Single Molecular Ions in a Weak Polyelectrolyte Multilayer 

    Tauzin, Lawrence J.; Shuang, Bo; Kisley, Lydia; Mansur, Andrea P.; Chen, Jixin; de Leon, Al; Advincula, Rigoberto C.; Landes, Christy F. (2014)
    The tunable nature of weak polyelectrolyte multilayers makes them ideal candidates for drug loading and delivery, water filtration, and separations, yet the lateral transport of charged molecules in these systems remains ...
  • Chip level LMMSE Equalization for Downlink MIMO CDMA in fast fading environments 

    de Baynast, Alexandre; Radosavljevic, Predrag; Cavallaro, Joseph R. (2004-11-01)
    In this paper, we consider linear MMSE equalization for wireless downlink transmission with multiple transmit and receive antennas in fast fading environment. We propose a new algorithm based on conjugate-gradient algorithm ...
  • Circular polarization dependent cyclotron resonance in large-area graphene in ultrahigh magnetic fields 

    Booshehri, L.G.; Mielke, C.H.; Rickel, D.G.; Crooker, S.A.; Zhang, Q.; Ren, L.; Haroz, E.H.; Rustagi, A.; Stanton, C.J.; Jin, Z.; Sun, Z.; Yan, Z.; Tour, J.M.; Kono, J. (2012)
    Using ultrahigh magnetic fields up to 170 T and polarized midinfrared radiation with tunable wavelengths from 9.22 to 10.67 μm, we studied cyclotron resonance in large-area graphene grown by chemical vapor deposition. Circular ...
  • CMOS Processor Element For A Fault-Tolerant SVD Array 

    Kota, Kishore; Cavallaro, Joseph R. (1993-07-20)
    This paper describes the VLSI implementation of a CORDIC based processor element for use in a fault-reconfigurable systolic array to compute the Singular Value Decomposition (SVD) of a matrix. The chip implements a time ...
  • Code design and multiuser detection for code division multiple access systems with continuous phase modulation 

    Papasakellariou, Aristides (1996)
    The proliferation of wireless communications services combined with the limited spectrum availability have placed the bandwidth utilization as a major performance measure. Consequently, the bandwidth allocation technique ...
  • Code design for multiple-antenna systems 

    Memarzadeh, Mahsa (2001)
    We propose a systematic method for the design of space-time codes for AWGN slowly and fast Rayleigh fading channels. This can be accomplished by adopting a concatenated space-time code structure, where an orthogonal transmit ...
  • Code Design for Multiple-Antenna Systems 

    Memarzadeh, Mahsa (2001-04-20)
    We propose a systematic method for the design of space-time codes for AWGN slowly and fast Rayleigh fading channels. This can be accomplished by adopting a concatenated space-time code structure, where an orthogonal transmit ...