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Filtering by: Has journal Communications in Computational Physics Remove constraint Has journal: Communications in Computational Physics Decade 1990-1999 Remove constraint Decade: 1990-1999 Degree Field Electrical and Computer Engineering Remove constraint Degree Field: Electrical and Computer Engineering

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  • Optimum equalization and synchronization of broadband multicarrier systems

    Creator:
    Lashkarian, Navid
    Abstract:
    The application of information theory and digital signal processing techniques to digital communication has resulted in robust methods for reliable high speed data transmission over noisy channels environments. Among these methods, multicarrier systems have become a viable solution for exploiting maximum spectral efficiency over both wideband highly dispersive static and...
    Resource Type:
    Dissertation
    Full Text:
    theory and digital signal processing techniques to digital communication has resulted in robust methods

  • Time domain modeling of electromagnetic radiation with application to ultrafast electronic and wireless communication

    Creator:
    Remley, Catherine A.
    Abstract:
    A versatile computational technique for improved time domain modeling of electromagnetic radiative systems is demonstrated. Two computational methods are combined: the finite-difference time domain (FDTD) method, a full-wave electromagnetic field solver, and the Kirchhoff surface integral formulation, a spatial transformation technique. The combined FDTD/Kirchhoff technique is shown to increase accuracy...
    Resource Type:
    Dissertation
    Full Text:
    Communication Systems by Catherine A. Rem ley A THESIS submitted to Oregon State University in partial

  • A simple RLS-POCS solution for reduced complexity ADSL impulse shortening

    Creator:
    Helms, Sheldon J.
    Abstract:
    Recently, with the realization of the World Wide Web, the tremendous need for high-speed data communications has grown. Several access techniques have been proposed which utilize the existing copper twisted pair cabling. Of these, the xDSL family, particularly ADSL and VDSL, have shown great promise in providing broadband or near-broadband...
    Resource Type:
    Masters Thesis
    Full Text:
    in Electrical and Computer Engineering presented on September 3, 1999. Title: A Simple RLS-POCS

  • Proposed implementation of a near-far resistant multiuser detector without matrix inversion using Delta-Sigma modulation

    Creator:
    Myers, Timothy F.
    Abstract:
    A new algorithm is proposed which provides a sub-optimum near-far resistant pattern for correlation with a known signal in a spread-spectrum multiple access environment with additive white gaussian noise (AWGN). Only the patterns and respective delays of the K-1 interfering users are required. The technique does not require the inversion...
    Resource Type:
    Masters Thesis
    Full Text:
    important measures of performance in a communication channel is its bit error rate (BER). For channels that

  • Data rate improvements for the IEEE 802.11 wireless local area network standard through the use of code division multiple access and turbo coding

    Creator:
    Buck, David H.
    Abstract:
    The widespread use of Wireless Local Area Networks (WLAN) and the desire for such products from different vendors to operate together has generated a movement towards standardization. Over the last decade, several organizations worldwide have researched and developed such standards, this includes the IEEE 802.11 committee. One of the important...
    Resource Type:
    Masters Thesis
    Full Text:
    on wireless data communications began in the late 1970s, but it was not until the Federal

  • Characterization and reduction of local oscillator phase noise effects in communications systems

    Creator:
    Godshalk, Edward M.
    Abstract:
    Recent developments in digital communications at microwave frequencies have revealed that local oscillator phase noise is often a factor in the bit error rate (BER) analysis. Digital signals transported across microwave radio links acquire waveform jitter from local oscillator phase noise. As jitter increases so does BER. The main goals...
    Resource Type:
    Dissertation
    Full Text:
    noise effects in communications systems AN ABSTRACT OF THE DISSERTATION OF Edward M. Godshalk for

  • Efficient decision feedback receiver design for cellular CDMA spread spectrum communications

    Creator:
    Volz, Patrick U.
    Abstract:
    This dissertation presents the continued study of a non-iterative decision feedback (DF) receiver/decoder design and its application to cellular communications or wireless local loop systems based on the IS-95(-A) standard of the Telecommunications Industry Association and also Personal Communications Services systems based on the American National Standards Institute standard J-STD-...
    Resource Type:
    Dissertation
    Full Text:
    , a new block interleaver design. 2 1.1. Cellular Communications In the 1960s and 1970s

  • Cluster partitioning approaches to parallel Monte Carlo simulation on multiprocessors

    Creator:
    Ranawake, Udaya A.
    Abstract:
    We consider the parallelization of Monte Carlo algorithms for analyzing numerical models of charge transport used in semiconductor device physics. Parallel algorithms for the standard k-space Monte Carlo simulation of a three band model of bulk GaAs on hypercube multicomputers are first presented. This Monte Carlo model includes scattering due...
    Resource Type:
    Dissertation
    Full Text:
    models of charge transport used in semiconductor device physics. Parallel algorithms for the standard k

  • Motion-based MPEG video summarization

    Creator:
    Colle, Olivier
    Abstract:
    A new, fully automated summarization algorithm of MPEG compressed videos is designed to address the challenge of content based video retrieval. This algorithm segments the MPEG stream motion vector magnitudes using a seed growing region technique. Following the spatial segmentation of each frame, an intra-frame class-merging operation is performed. The...
    Resource Type:
    Masters Thesis
    Full Text:
    THESIS OF Olivier Colle for the degree of Master of Science in Electrical and Computer Engineering

  • Fast Galois field arithmetic for elliptic curve cryptography and error control codes

    Creator:
    Sunar, Berk
    Abstract:
    Today's computer and network communication systems rely on authenticated and secure transmission of information, which requires computationally efficient and low bandwidth cryptographic algorithms. Among these cryptographic algorithms are the elliptic curve cryptosystems which use the arithmetic of finite fields. Furthermore, the fields of characteristic two are preferred since they provide...
    Resource Type:
    Dissertation
    Full Text:
    computational effort in terms of time and space. Therefore, we are mainly interested in obtaining