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Filtering by: Creator Schmidt%2C Mariek E. Remove constraint Creator: Schmidt%2C Mariek E. Degree Field Electrical and Computer Engineering Remove constraint Degree Field: Electrical and Computer Engineering

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  • Spectral modular arithmetic

    Creator:
    Saldamli, Gökay
    Abstract:
    In many areas of engineering and applied mathematics, spectral methods provide very powerful tools for solving and analyzing problems. For instance, large to extremely large sizes of numbers can efficiently be multiplied by using discrete Fourier transform and convolution property. Such computations are needed when computing π to millions of...
    Resource Type:
    Dissertation
    Full Text:
    c = me mod n where c, m, e, n are large integers. Therefore following the spectral modular

  • New methods for finite field arithmetic

    Creator:
    Yanik, Tuğrul
    Abstract:
    We describe novel methods for obtaining fast software implementations of the arithmetic operations in the finite field GF(p) and GF(p[superscript k]). In GF(p) we realize an extensive speedup in modular addition and subtraction routines and some small speedup in the modular multiplication routine with an arbitrary prime modulus p which...
    Resource Type:
    Dissertation
    Full Text:
    reviews, par- ticularly to Dr. Thomas A. Schmidt from the Mathematics Department. At various stages in

  • Inertial control of a beamforming antenna array for use in cellular phones

    Creator:
    Schmidt, Patrick (Patrick Lane)
    Abstract:
    This research explores the viability and effectiveness of using an inertial navigation system (INS) to control a beamforming array of microstrip patch antennas with the aim of reducing users' exposure to electromagnetic radiation. The system reduces radiated power directed toward a cellular phone user to below 10% of the total...
    Resource Type:
    Masters Thesis
    Full Text:
    Schmidt for the degree of Master of Science in Electrical and Computer Engineering presented on May 18

  • Feedback in multiple antenna wireless communication systems

    Creator:
    Xu, Tao
    Abstract:
    Multiple-input multiple-output wireless systems promise significant capacity gain and/or diversity gain over single antenna systems. If channel state information (CSI) is available at both the transmitter and the receiver, the performance can be further improved. In this thesis, first, we study binary index feedback problem in beamforming systems when the...
    Resource Type:
    Dissertation
    Full Text:
    Professor Bechir Hamdaoui, Professor Mario E. Magaña, Professor Raviv Raich, and Professor Thomas A

  • Hybrid AOA and TDOA Solution for Transmitter Positioning

    Creator:
    Ahmed, Sarah A.
    Abstract:
    Accurate positioning has become an active research area in recent years. It has a wide range of applications in many fields such as navigation, asset tracking, health care, proximity marketing/location-based advertising, and sport analytics. Transmitter positioning via radio frequency (RF) signals is the most widely encountered scenario, and it uses...
    Resource Type:
    Masters Thesis
    Full Text:
    ) =  1 e−j 2πd1 sin(θk) λ : e−j(D−1) 2πdp−1 sin(θk) λ  . (2.16) The equation for the MUSIC

  • A digital multiplying delay locked loop for high frequency clock generation

    Creator:
    Uttarwar, Tushar
    Abstract:
    As Moore’s Law continues to give rise to ever shrinking channel lengths, circuits are becoming more digital and ever increasingly faster. Generating high frequency clocks in such scaled processes is becoming a tough challenge. Digital phase locked loops (DPLLs) are being explored as an alternative to conventional analog PLLs but...
    Resource Type:
    Masters Thesis
    Full Text:
    − 𝛽 1 + 𝛽 − 1 𝑒−𝑗𝑤 𝑇𝑟 ∗ 𝑒−𝑗𝑤 𝑇𝑟/2 ∗ sin 𝑤𝑇𝑟 2 𝑤𝑇𝑟 2 𝐻𝑢𝑝 𝑗𝑤 = 𝑁𝛽

  • Design of a low jitter digital PLL with low input frequency

    Creator:
    Jung, Seokmin
    Abstract:
    Complex digital circuits such as microprocessors typically require support circuitry that has traditionally been realized using analog or mixed-signal macros. PLL circuits are used in many integrated applications such as frequency synthesizers and inter-chip communication interfaces. As process technologies advance and grow in complexity, the challenge of maintaining required analog...
    Resource Type:
    Masters Thesis
    Full Text:
    Frequency (Hz) Ph as e N oi se (d Bc /H z) S  OUT I R S  OUT  VCO S  OUT I SCR S

  • Cryptanalysis and enhancement of authentication protocols

    Creator:
    Kim, Minho
    Abstract:
    Authentication protocols play important roles in network security. A variety of authentication protocols ranging from complex public-key cryptosystems to simple password-based authentication schemes have been proposed. However, currently there is no fully secure authentication scheme that can resist all known attacks. When a user authentication is performed over an insecure...
    Resource Type:
    Dissertation
    Full Text:
    Schmidt, and Greg Baker for their serving in my graduate committee. I would like to thanks my colleagues

  • Nontraditional amorphous oxide semiconductor thin-film transistor fabrication

    Creator:
    Sundholm, Eric Steven
    Abstract:
    Fabrication techniques and process integration considerations for amorphous oxide semiconductor (AOS) thin-film transistors (TFTs) constitute the central theme of this dissertation. Within this theme three primary areas of focus are pursued. The first focus involves formulating a general framework for assessing passivation. Avoiding formation of an undesirable backside accumulation layer...
    Resource Type:
    Dissertation

  • Locating Radio Signals Using Software Defined Radio

    Creator:
    Johnson, Benjamin E.
    Abstract:
    Locating sources of radio signals can be useful in many applications. From pointing antennas at nearby radio towers to fox hunting, being able to determine the relative location or direction to a radio transmitter can be very useful. Generally, it is necessary to have the current GPS locations of both...
    Resource Type:
    Honors College Thesis
    Full Text:
    , SDR, software defined radio, FPGA Corresponding e-mail address: johnsbe3@oregonstate.edu