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Filtering by: Advisor Magana, Mario Remove constraint Advisor: Magana, Mario Degree Field Electrical and Computer Engineering Remove constraint Degree Field: Electrical and Computer Engineering

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  • Massive MIMO Channel Characterization

    Creator:
    Assiri, Mohammad
    Abstract:
    It has been estimated that data traffic from the different mobile devices that range from smartphones to machine-to-machine (M2M) devices will exceed 15.9 exabyte per month by the year 2018. With this immense data growth, the current wireless communication systems suffer from the scarcity of the radio spectrum and eventually...
    Resource Type:
    Masters Thesis
    Full Text:
    : Massive MIMO Channel Characterization Abstract approved: Mario E. Magaña It has been estimated that

  • 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:
    , Professor Mario E. Magaña, who has provided me with guidance every step of the way and without whom this

  • Network coding in relay networks

    Creator:
    Alban, Eduardo
    Abstract:
    Transmission over wireless networks presents multiple technical challenges due to noise, interference, fading, power constraints and bandwidth limitation. Different solutions have been propposed to overcome these issues and some of them are treated here. Cooperative diversity has been proposed as an implementation for networks where terminals are restricted to using...
    Resource Type:
    Masters Thesis
    Full Text:
    . Title: Network Coding in Relay Networks Abstract approved: Mario E. Magaña Transmission over

  • Multiple Nonlinear Model Predictive Control for a Six-body System Oscillating Water Column Wave Energy Converters Array

    Creator:
    Xu, Zhicheng
    Abstract:
    This research presents the design of three nonlinear model predictive controllers (NMPCs) for floating oscillating water column (OWC) wave energy converters (WECs) array to maximize generated power, augmented with the control of the high-speed stop valves (HSSVs). Key to this design is the development of a high-fidelity discretized model for...
    Resource Type:
    Masters Thesis
    Full Text:
    Converters Array Abstract approved: Mario Edgardo Magaña This research presents the design of three

  • Global Hierarchical Control of a Park of Spar Buoy-type Floating Oscillating Water Column Wave Energy Converters

    Creator:
    Gaebele, Daniel T.
    Abstract:
    Converting energy from ocean waves is a challenging area for control theory application because of the nonlinear dynamics in various time scales. Generally, wave energy converter (WEC) control is applied in order to maximize power absorption, in the most common wave conditions, and subject to the devices’ physical constraints. Commonly,...
    Resource Type:
    Dissertation
    Full Text:
    Energy Converters Abstract approved: Mario E. Magaña Converting energy from ocean waves is a

  • The Partitioning Technique of Power System to Improve the Observability of Sub-System for Multi-area State Estimation

    Creator:
    Lyu, Tao
    Abstract:
    An accurate state estimation plays an essential role in power system operation and planning in energy management systems. However, existing multi-area state estimation researches have not focused on the importance of system clustering. The clustering mechanism divides or partitions a system according to user-defined criteria. Few published research works have...
    Resource Type:
    Dissertation
    Full Text:
    Estimation Abstract approved: Mario Edgardo Magaña An accurate state estimation plays an essential role

  • Coding Techniques for Achieving Efficient Wireless Sensor Networks

    Creator:
    Qassim, Yousef M.
    Abstract:
    In this dissertation, we explored multiple coding techniques to reduce energy consumption, improve performance, and secure wireless sensor networks specifically and ad-hoc networks in general. With the introduction of Internet of Things (IoT) and 5G technologies, wireless sensor networks are quickly emerging as an important and key technology in the...
    Resource Type:
    Dissertation
    Full Text:
    , and Jawad for believing in me and being there when I needed them. I like to thank Prof. Mario Magaña

  • Distributed Dynamic Multi-Area State Estimation with Fusion Technique

    Creator:
    Guo, Jia
    Abstract:
    As the power system grows larger and more complex, real-time monitoring and control become very significant in order to achieve reliable operation of the power system. Before any security assessment can be made or control actions are taken, the reliable estimate of the existing state of the system must be...
    Resource Type:
    Dissertation
    Full Text:
    : Distributed Dynamic Multi-Area State Estimation with Fusion Technique Abstract approved: Mario E. Magaña

  • Channel Estimation in TDD MU-MIMO Systems using Sub-Linear Sparse Signal Recovery Algorithms

    Creator:
    Barry, David G.
    Abstract:
    Massive Multiple-User Miltiple-Input Multiple-Output (MU-MIMO) wireless communication systems incorporate promising advanced strong technologies for upcoming 5G communications. To obtain some of the high spectrum and energy e ciencies bonuses brought by MU-MIMO systems, the ability to obtain Channel State information, especially on the receiver side (CSI), is important. To minimize...
    Resource Type:
    Masters Thesis
    Full Text:
    : Mario E. Magaña Massive Multiple-User Miltiple-Input Multiple-Output (MU-MIMO) wireless communi

  • Multi-User Massive MIMO Channel Estimation Based on Kalman Filters

    Creator:
    Yao, Zhaoda
    Abstract:
    In wireless communication, channel state information (CSI) is essential for data detection. Fast fading coefficients estimation is important in order to acquire accurate CSI. Kalman filters (KF) are widely used for real time parameter estimation and can be used to estimate the fast fading coefficients of a mobile communication channel....
    Resource Type:
    Masters Thesis
    Full Text:
    Mario E. Magaña In wireless communication, channel state information (CSI) is essential for data

  • Channel Estimation in TDD Massive MIMO Systems with Subsampled Data at BS

    Creator:
    Tian, Yichuan
    Abstract:
    Massive MIMO is a promising technique for future 5G communications due to its high spectrum and energy efficiency. To realize its potential performance gain, accurate channel state information at transmitter side (CSIT) is essential. Frequency division duplex (FDD) is widely employed by the most cellular systems today. However, it requires...
    Resource Type:
    Masters Thesis
    Full Text:
    : ______________________________________________________ Mario E. Magaña Massive MIMO is a promising technique for future 5G communications due to

  • Grid Voltage Frequency Estimation Using an Adaptive Complex Master-Slave Unscented Kalman Filter

    Creator:
    Muñoz Constantine, Juan Pablo
    Abstract:
    Due to the popularity of electronically controlled loads and the widespread use of alternative energy sources such as wind turbines and solar cells, the power quality at the distribution level must be carefully monitored. One of the many different means to monitor power quality is through frequency measurements. Nonlinearities cause...
    Resource Type:
    Masters Thesis
    Full Text:
    approved: ______________________________________________________ Mario E. Magaña Due to the

  • Compensation method of the excess loop delay in continuous-time delta-sigma ADCs based on model matching approach

    Creator:
    Guo, Jia
    Abstract:
    Continues-Time (CT) Delta-Sigma (ΔΣ) Analog-to-Digital Converters (ADCs) have one important constrain, namely the excess loop delay. Most previous excess lop delay compensation methods need to know the exact value of the excess loop delay in advance. However, the value of the excess loop delay is a uniformly distribution random variable....
    Resource Type:
    Masters Thesis
    Full Text:
    : Mario E. Magaña

  • Adaptive broadband wireless interference mitigation architecture applying higher order statistics algorithm for computer platform

    Creator:
    Wang, Qiwei
    Abstract:
    The broadband wireless interference in a computer platform is resulted by multiple electro-magnetic emission sources. This non-Gaussian interference is proved to be double-sided K-distributed in previous research. With the limitation of transmission power and dimension of the device, interference mitigation is an efficient way to improve received signal bit error...
    Resource Type:
    Masters Thesis
    Full Text:
    : _____________________________________________________ Mario E. Magaña The broadband wireless interference in a computer platform is resulted by

  • A frequency-domain approach to simulating wave energy converter hydrodynamics

    Creator:
    Simmons, Asher
    Abstract:
    Wave energy converter (WEC) devices are complicated systems containing hydrodynamic, mechanical, and electrical elements. WEC design efforts are primarily focused in the time-domain, using frequency-based energy analyses and numerical problem solving approaches that are staples in hydrodynamic design efforts to form the basic information set used in these time-domain development...
    Resource Type:
    Masters Thesis
    Full Text:
    Professor Magaña and Professor Brekken for their excellent academic support; Dr. Margaret Simmons and Mr

  • Improved Lyapunov-based decentralized adaptive controller

    Creator:
    Dai, Reza A.
    Abstract:
    An improved robot manipulator decentralized non-linear adaptive controller that performs well in the presence of disturbances with unknown parameters and non-linearities is presented in this work. The proposed decentralized adaptive structure is a modification of the controller developed by Seraji [13-17] and is characterized by an auxiliary signal that compensates...
    Resource Type:
    Masters Thesis
    Full Text:
    Controller Redacted for PrivacyAbstract approved:_ 1 irjrio E. Magana An improved robot manipulator

  • 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

  • Modified limiting dilution analysis : a mathematical model with biological interpretation

    Creator:
    Maier, Stefan H.
    Abstract:
    A mathematical model of Limiting Dilution Analysis for two limiting parameters is presented and investigated. Limiting Dilution Analysis is a microbiological cell assay developed for immunological application. In the given case we deal with the interaction between B lymphocytes, macrophage derived factor and T-independent antigens. The state of the art...
    Resource Type:
    Masters Thesis
    Full Text:
    . Mario E. Magaria, without whom this thesis would not have been possible. Furthermore I want to thank

  • Active robust control of cable-stayed bridges

    Creator:
    Scheer, Dietmar
    Abstract:
    Long bridges tend to develop large deformations under the action of intense dynamical loads such as wind or earthquakes. Unless these deformations are controlled in some fashion, the structure might suffer damage or even collapse. One possible solution to this problem is to apply external forces to the bridge through...
    Resource Type:
    Masters Thesis
    Full Text:
    for Privacy Abstract approved: - Mario E. Magalla Long bridges tend to develop large deformations

  • A fast trajectory tracking adaptive controller for robot manipulators

    Creator:
    Tagami, Shinsuke
    Abstract:
    An adaptive decentralized nonlinear controller for a robot manipulator is presented in this thesis. Based on the adaptive control schemes designed by Seraji [18], Dai [30], and Jimenez [31], we redesigned and further simplified the control algorithm and, as a consequence, we achieved better path tracking performance. The proposed adaptive...
    Resource Type:
    Masters Thesis
    Full Text:
    , 1993 Typed by Shinsuke Tagami ACKNOWLEDGEMENT To my professor Dr. Mario E. Magana TABLE OF