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  • A Two-element CZT-based Radioxenon Detection System for Nuclear Weapon Test Monitoring

    Creator:
    Ranjbar, Lily
    Abstract:
    Detection of xenon radioisotopes (radioxenons) has proven to be an important method for detecting nuclear explosions and is particularly well suited for detecting undeclared underground testing. The radioxenon isotopes ¹³¹mXe (t₁/₂ = 11.934 d), ¹³³mXe (t₁/₂ = 2.19 d), ¹³³Xe (t₁/₂ = 5.243 d) and ¹³⁵Xe (t₁/₂ = 9.14 h)...
    Resource Type:
    Dissertation
    Full Text:
    Abstract approved: ______________________________________________________ Abi T. Farsoni

  • Real-time radioxenon measurement using a Compton-suppressed well-type phoswich detector for nuclear explosion monitoring

    Creator:
    Alemayehu, Bemnet
    Abstract:
    Radioxenon detection is a technique used to monitor nuclear explosion and verify the Comprehensive Nuclear-Test-Ban Treaty (CTBT). Because of an ultra-low concentration of radioxenon at radioxenon monitoring stations, radioxenon detection systems must have high sensitivity. This sensitivity is measured in terms of detector's minimum detectable concentration (MDC). It is required...
    Resource Type:
    Dissertation
    Full Text:
    : __________________________________________________________________ Abdollah T. Farsoni Radioxenon

  • Development of a CZT-Silicon Detection System in Support of the Comprehensive Nuclear-Test-Ban Treaty

    Creator:
    Alhawsawi, Abdulsalam M.
    Abstract:
    The Comprehensive Nuclear-Test-Ban Treaty (CTBT) bans all nuclear explosion tests for military or civilian purposes. The International Monitoring System (IMS) was established to verify compliance with the treaty. It consists of several monitoring stations that detect: seismic activities, hydrocoustic activities, infrasound waves, and radionuclide particles and noble gases. Radioxenon detection...
    Resource Type:
    Dissertation
    Full Text:
    : ______________________________________________________ Abi T. Farsoni The Comprehensive Nuclear-Test-Ban Treaty (CTBT) bans all nuclear

  • Adaptive load balancing metric for WLANs

    Creator:
    Ryou, Jong bum
    Abstract:
    As the number of mobile devices accessing large-scale WLANs such as campus and metropolitan area networks increases, the need for load balancing among the cells becomes crucial. In addition, the network must also support some minimum handoff tolerance defined by an application. A number of load balancing techniques have been...
    Resource Type:
    Dissertation

  • Some contributions to asymmetric error control codes

    Creator:
    Elmougy, Samir
    Abstract:
    In some practical systems, most of the errors are of 1 → 0 type and 0 → 1 errors occur very rarely. In this thesis, first, the capacity of the asymmetric channel is derived. The capacity of the binary symmetric channel (BSC) and the Z-channel can be derived from this...
    Resource Type:
    Dissertation
    Full Text:
    systematic t-unidirectional error detecting codes over Zm, m > 2 is designed. These codes can detect 2

  • Ultra-low power receivers for wireless sensor networks

    Creator:
    Ayers, James S.
    Abstract:
    In wireless sensor network applications, low-power operation of the wireless receiver is critical. To address this need an ultra-low power Binary Frequency Shift Keying (BFSK) receiver using the super-regenerative architecture is developed. A prototype receiver is built and tested for operation in the 900 MHz ISM band. Lab measurements show...
    Resource Type:
    Dissertation
    Full Text:
    frequency to the ωT of the transistor. As the power consumption decreases the ωT of the device also

  • An ultra low voltage micropower GPS receiver RF front-end for wildlife tracking

    Creator:
    Heiberg, Adam C.
    Abstract:
    A fully integrated CMOS GPS receiver RF front end optimized for low power operation is presented. The system operates with a supply voltage down to 250 mV. A prototype has been fabricated in a 0.13μm CMOS process and includes a low voltage LNA, quadrature oscillators, and quadrature mixers. It exhibits...
    Resource Type:
    Masters Thesis
    Full Text:
    with a 90◦ phase shift. In this case, the transmitted signal is given by: S(t) = A cos(ωt)[dataI(t)]−A

  • High-Resolution mm-wave Digitally Controlled Oscillator in CMOS

    Creator:
    Wang, Yunqi
    Abstract:
    All-digital PLLs promise flexible and precise frequency modulation continous-wave(FMCW) radar signal signal for 77GHz radar applications. Such PLLs require digitally-controlled oscillators(DCO) with wide frequency tuning range and high resolution to address a range of applications and low phase noise requirements. In this thesis, novel resonator structures with ne capacitance/inductance switching...
    Resource Type:
    Masters Thesis
    Full Text:
    -the-art mm-wave DCO FoM-T of -182dBc/Hz. c©Copyright by Yunqi Wang November 23rd, 2015 All Rights

  • Semi-digital PLL architecture for ultra low bandwidth applications

    Creator:
    George, Edmond
    Abstract:
    Phase Locked Loops(PLLs) are an integral part of almost every electronic system. Systems involving low frequency clocks often require PLLs with low bandwidth. The area occupied by the large loop filter capacitor and resistor in a low bandwidth PLL design makes the realization of traditional charge-pump PLL architecture impractical on...
    Resource Type:
    Masters Thesis
    Full Text:
    diagram 7 Proportional control can be represented by equation 2.1, where P(t) is the propor- tional

  • Scaled modeling and simulation of ocean wave linear generator buoy systems

    Creator:
    Gore, Ganesh P.
    Abstract:
    Accurate scaled modeling and simulation are critical to advancing ocean wave linear generator buoys. A 100th scaled model of ocean wave generator buoy systems is analyzed by solving the Navier-Stokes equations. These equations are numerically solved using Computational Fluid Dynamics (CFD) by implementing the front capturing method. In this thesis,...
    Resource Type:
    Masters Thesis
    Full Text:
    96.5%, produces 2.2 W with a peak thrust of 30 N. The damped frequency of heave motion is plotted and

  • Resource allocation methods for quality-of-service provisioning in heterogeneous wireless networks

    Creator:
    Chakchouk, Nessrine
    Abstract:
    The increased use of mobile wireless devices that we have recently been witnessing, such as smartphones, tablets, e-readers, and WiFi enabled devices in general, is driving an unprecedented increase in the amount of data traffic. This fast market adoption of the wireless technology along with the tremendous success of multimedia...
    Resource Type:
    Dissertation
    Full Text:
    staff members, particularly, Ferne Simendinger, Shannon Thompson and Renee Lyon for their availability

  • 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:
    l=1 + 𝐰(t), (2.27) where 𝐰(t) is uncorrelated estimation noise matrix and ∑ √Pl𝐆l(t) L l=1

  • Modeling and analysis of spur structure of digital-to-time conversion based frequency synthesizers

    Creator:
    Talwalkar, Sumit A.
    Abstract:
    Frequency synthesizers are critical components of all communication systems. This thesis considers the issue of undesirable frequency spurs of a relatively recent type of frequency synthesis architecture called digital-to-time conversion (DTC). The DTC-based frequency synthesis architecture has important performance benefits over older frequency synthesizers, such as fast frequency switching, large...
    Resource Type:
    Dissertation
    Full Text:
    (which I invariably did with some regularity). Shannon Thompson and Nicole Thompson continued in that

  • Fast queuing policies via convex relaxation

    Creator:
    Nguyen-Huu, Duong
    Abstract:
    Traditionally, networking protocol designs have placed much emphasis on point-to-point reliability and efficiency. With the recent rise of mobile and multimedia applications, other considerations such as power consumption and/or Quality of Service (QoS) are becoming increasingly important factors in designing network protocols. As such, we present a new flexible framework...
    Resource Type:
    Masters Thesis
    Full Text:
    corresponding stationary distribution π such that πTP = πT . In this particular case, π =  0.61 0.27

  • A novel linear generator for wave energy applications

    Creator:
    Ernst, Steven George
    Abstract:
    With the increasing effort to identify alternative methods of energy generation, extraction of ocean energy has gathered a large interest. Research and industry have begun considering wave energy as the next new alternative energy. The unique challenges of ocean energy requires a wave energy converter to be both robust and...
    Resource Type:
    Masters Thesis
    Full Text:
    the 100 W linear generator was accomplished due to the collaboration with an additional research

  • Analysis and modeling of coplanar on-chip interconnects on silicon substrates

    Creator:
    Luoh, Yi
    Abstract:
    The electrical behavior of on-chip interconnects has become a dominant factor in silicon-based high speed, RF, and mixed-signal integrated circuits. In particular, the frequency-dependent loss mechanisms in heavily-doped silicon substrates can have a large influence on the transmission characteristics of on-chip interconnects. To optimize the performance of the integrated circuit,...
    Resource Type:
    Masters Thesis
    Full Text:
    thickness t = 0.7iim, and substrate conductivity crj = 10, 000S/m; (a) [R(w)] and (b) [L(w)]. . 50 3.20

  • One-to-many node disjoint paths routing in generalized hypercube, dense Gaussian, and hexagonal mesh networks

    Creator:
    Alsaleh, Omar I.
    Abstract:
    Routing from a single source node to multiple destination nodes using node disjoint paths (NDP) has many important applications in parallel systems. For example, if a source node wants to send distinct messages to distinct destination nodes, then the one-to-many NDP routing is useful. Unlike parallel systems with shared-memory, each...
    Resource Type:
    Dissertation
    Full Text:
    follows: given a source node s, a set of distinct destination nodes T = {t1, t2, . . . , tℓ}, where s

  • RF and Millimeter-wave Techniques to Improve Scalability and Efficiency of Digital Beamforming Arrays

    Creator:
    Johnson, Manoj
    Abstract:
    Spectrum overcrowding, ever increasing demand for high data rate and increased mobility requirements are three major challenges 5G-technology is trying to address. In this thesis I start with a RF front-end technique that deals with blocker interference arising from spectrum overcrowding both across frequency bands and within the same frequency...
    Resource Type:
    Dissertation
    Full Text:
    thank Dr. Roy Ollson, Dr. Ben Epstein, Dr. T. Hancock and Dr. Steven Gross of DARPA for helpful

  • Low-power high-resolution delta-sigma ADC design techniques

    Creator:
    Wang, Tao
    Abstract:
    This dissertation presents a low-power high-resolution delta-sigma ADC. Two new architectural design techniques are proposed to reduce the power dissipation of the ADC. Compared to the conventional active adder, the direct charge transfer (DCT) adder greatly saves power by keeping the feedback factor of the active adder unity. However, the...
    Resource Type:
    Dissertation
    Full Text:
    . D program. They are Ferne Simendinger, Shannon Thompson, Renee Lyon, Kecia Dougherty, Todd

  • Low-power dynamic CMOS circuits in high-performance memory arrays

    Creator:
    Patwary, Md. Ataur R.
    Abstract:
    Dynamic CMOS circuits are commonly used in high-performance memory arrays to implement wide-NOR logic functions for their read and search operations. This is because dynamic circuits have significantly higher speed and lower area compared to static circuits for performing similar operations. Register File (RF) arrays are located at the top...
    Resource Type:
    Dissertation
    Full Text:
    operation of CAM and RAM arrays, respectively. Address Match? 0001 P O R T L A N D No 0002 C O R V

  • Power Efficient Architectures for Medium-high Resolution Analog-to-Digital Converters

    Creator:
    Sadollahi, Mahmoud
    Abstract:
    Analog-to-digital converters are essential components to the portable devices that we are using today. Wireless sensors, body implanted devices, communication devices and so forth require low power ADCs. Therefore achieving higher resolution and bandwidth with lower power consumption is targeted in ADCs design. In this work power efficient ADCs for...
    Resource Type:
    Dissertation
    Full Text:
    . I would like to thank Nicole Thompson and all other EECS office members for their supports. I

  • Modeling and simulation methods for RF MEMS VCOs

    Creator:
    Sankaranarayanan, Janakiram Ganesh
    Abstract:
    This work focusses on the modeling and the development of efficient coupled simulation techniques for MEMS based RF oscillators. High-level models for MEMS based varactors have been discussed and their accuracy issues are identified, based on comparisons with numerical simulations. A faster simulation approach based on the time-domain shooting method...
    Resource Type:
    Masters Thesis
    Full Text:
    , kfixed = 32EW ( t L )3 (2.8) where, E is the Young’s modulus of the material of the capacitor, and W

  • Immune radio architecture for platform interference

    Creator:
    Alban, Eduardo
    Abstract:
    The decrease of switching times accompanied by the corresponding increase of clock speeds and data rates, contributes to improve the overall system computational performance. At the same time, they also affect wireless communications due to an increment in the emissions of electromagnetic radiation on the radio bands. In this dissertation...
    Resource Type:
    Dissertation
    Full Text:
    . . . . . . . . . . . . . . . . . . . . . . . . . . 159 B Distribution of N(t) . . . . . . . . . . . . . . . . . . . . . . . . . . . 167 C Estimation of

  • Measurement and characterization of ultra-wideband wireless interconnects within active computing systems

    Creator:
    Woracheewan, Sirikarn
    Abstract:
    Ultra-wideband (UWB) radio has become an attractive alternative for wireless communications due to the robustness to multipath fading, low power transmission, mostly-digital implementation, and low cost. Furthermore, short-range, high data-rates applications are possible with UWB radios due to the wide spectral allocations at 3.1 - 10.6 GHz. This thesis presents...
    Resource Type:
    Masters Thesis
    Full Text:
    (ns) x(t) x(1)(t) x(2)(t) Figure 2.2: A Gaussian pulse and higher-order derivative of the

  • A channelized digital receiver design for UWB sytems in a multipath indoor environment

    Creator:
    Chang, Yuhao
    Abstract:
    This thesis presents a channelized digital receiver design for UWB sytems in a multipath indoor environment. The UWB technology has been used for commercial and military purposes due to a number of advantages such as low-power consumption, noise-like and carrier free. The energy of UWB signal is spread over a...
    Resource Type:
    Masters Thesis
    Full Text:
    : e T t g tS 2) 1.0 2(2)( π

  • Coordinating secondary-user behaviors for inelastic traffic reward maximization in large-scale DSA networks

    Creator:
    NoroozOliaee, MohammadJavad
    Abstract:
    We develop efficient coordination techniques that support inelastic traffic in large-scale distributed dynamic spectrum access DSA networks. By means of any learning algorithm, the proposed techniques enable DSA users to locate and exploit spectrum opportunities effectively, thereby increasing their achieved throughput (or "rewards" to be more general). Basically, learning algorithms...
    Resource Type:
    Masters Thesis
    Full Text:
    e w a rd g i (t)=G(t) g i (t)=r j (t) Figure 2.2: Per-agent average a hieved reward r̄(t

  • Kinematic and cyclostationary parameter estimation for co-channel emitter location applications

    Creator:
    Ohm, David R.
    Abstract:
    The problem of locating a signal source, or an emitter, has many civilian and military applications, such as communication regulations enforcement, military reconnaissance, and search-and-rescue operations. Many of the most widely used emitter location methods rely on the accurate and robust estimation of the differential time delay, or time-difference-of-arrival (TDOA),...
    Resource Type:
    Dissertation
    Full Text:
    relative motion between them and the emitter. This model is expressed as x(t) = s(t) + nx(t) (2.1) y(t

  • Surface-Normal Modulation of Fano Resonances in Metallic Photonic Crystals for Free-Space Optical Interconnects

    Creator:
    Ren, Fanghui
    Abstract:
    This dissertation focuses on the development of ultra-compact optical devices for free-space modulation. We propose a surface-normal modulator using metallic photonic crystals for free-space optical interconnects. The active control of light intensity is achieved by engineering the Fano resonances in metallic photonic crystals. Both thermo-optic modulation and electro-optic modulation of...
    Resource Type:
    Dissertation
    Full Text:
    ). [22] M. Châteauneuf, A. G. Kirk, D. V. Plant, T. Yamamoto, J. D. Ahearn and W. Luo, “512-channel

  • The Architecture of a Reusable Built-In Self-Test for Link Training, IO and Memory Defect Detection and Auto Repair on 14nm Intel SOC

    Creator:
    Querbach, Bruce
    Abstract:
    The complexity of designing and testing today's system on chip (SOC) is increasing due to greater integrated circuit (IC) density and higher IO and memory frequencies. SOCs for the mobile phone and tablet market have the unique challenge of short product development windows, at times less than six months, and...
    Resource Type:
    Dissertation
    Full Text:
    .-H. Choi, S. Seo, T.-S. Park, J.-H. Shin, J.-H. Cho, S. Lee, K.-W. Song, K. Kim, J.-B. Lee, C

  • Non-data aided parametric based carrier frequency estimators for bursty GMSK communication systems

    Creator:
    Kandukuri, Ajay
    Abstract:
    Estimating the carrier frequency from a modulated waveform is one of the most important functions of a coherent signal receiver. Good performance and low bit error rates are obtained by coherent demodulation. Therefore, exact knowledge of the received signal carrier frequency is critical for communication systems. Also due to the...
    Resource Type:
    Masters Thesis
    Full Text:
    .................................................. 31 4-3 Expectation A(t) for delays 1 to 50

  • Design techniques for low-power multi-GS/s analog-to-digital converters

    Creator:
    Jiang, Tao
    Abstract:
    Ultra-high-speed (>10GS/s), medium-resolution (5~6bit), low-power (<50mW) analog-to-digital converter can find it application in the areas of digital oscilloscopes and next-generation serial link receivers. There are several challenges to enable a successful design, however. First, the time-interleaved architecture is required in order to achieve over 10GS/s sampling rate, with the trade-off...
    Resource Type:
    Dissertation
    Full Text:
    to Professor Abi T. Farsoni for being the graduate council representative. It is an honor to have

  • Noise and Blocker Cancellation Techniques for Power and Area Efficient Wireless Receivers

    Creator:
    Pourbagheri, Saeed
    Abstract:
    The design of mobile wireless devices has always focused on reducing power, area, and cost. This dissertation proposes two techniques that are leveraged to save power and area and therefore cost. The first techniques reduces the noise in the receiver and results in a relaxed power requirement. The second technique...
    Resource Type:
    Dissertation
    Full Text:
    energy of a signal with a limited bandwidth of 𝑊, and over a particular integration window of [0, 𝑇

  • A comparative study of lowpass continuous-time delta-sigma modulators with pulse-shaped DACs

    Creator:
    Fang, Jie
    Abstract:
    Recently, continuous-time ΔΣ modulators are appearing increasingly often in both the literature and the marketplace due to their features of inherent antialiasing and relaxed requirements for opamp and so on. However, several nonideal factors such as clock jitter, excess loop delay, inter-symbol interference and so on, degrade the SNR performance...
    Resource Type:
    Masters Thesis
    Full Text:
    uc(t) to x(n)..............................17 3.6 A CT modulator and an equivalent DT modulator

  • Data acquisition techniques for next generation wireless sensor networks

    Creator:
    Ehsan, Samina
    Abstract:
    The meteoric rise and prevalent usage of wireless networking technologies for mobile communication applications have captured the attention of media and imagination of public in the recent decade. One such proliferation is experienced in Wireless Sensor Networks (WSNs), where multimedia enabled elements are fused with integrated sensors to empower tightly...
    Resource Type:
    Dissertation
    Full Text:
    2.2.1 where eachSN i generates data traffic destined to theAN at a rate ofRi bits per second. LetBi(t

  • A 5 GHz Wi-Fi Receiver Front End with 4x80 MHz Channels for a High Accuracy Indoor Localization System

    Creator:
    Gray, Kyle L.
    Abstract:
    The ability to accurately locate people and objects indoors will enable opportunities for control and automation of indoor environments. Current indoor localization solutions require dedicated hardware which must be custom tailored to each application. There are large technological, societal, and economic benefits in developing a more general purpose system that...
    Resource Type:
    Masters Thesis
    Full Text:
    envelope shown in Fig. 2.3(b) where the rising edge signifies the packet’s time of arrival. W i− F i P

  • Energy-efficient, short-range ultra-wideband radio transceivers

    Creator:
    Hu, Changhui
    Abstract:
    Short-range wireless communications continually attract interest from both industry and academia, and it is changing our life in every aspect in the last decade. The design of wireless transceivers is the bottleneck for variety applications, due to RF modeling inaccuracy, stringent FCC regulations over the transmitted power spectrum, interference, multi-path...
    Resource Type:
    Dissertation
    Full Text:
    for more advanced technologies. 4 T ra n s is to r S iz e ( n m ) T ra n s is to r S

  • A multi-bit hybrid DSM over full-scale range without feedback DEM

    Creator:
    Kwon, Sunwoo, 1974-
    Abstract:
    Evolution of the mobile communication standards and proliferation of hand-held devices mandate stringent Analog-to-Digital Converter (ADC) specifications. Among various ADCs, a ∆Σ ADC is best known as a power-efficient ADC when more than 12b is required. However, a conventional discrete-time (DT) ∆Σ Modulator (∆ΣM) is inadequate for low-power wideband applications...
    Resource Type:
    Dissertation
    Full Text:
    Bandwidth [MHz] P o w e r c o n s u m p ti o n [ m W ] Nyquist-rate ADC Delta-Sigma modulator Figure

  • Adaptive, wideband analog-to-digital conversion for convergent communication systems

    Creator:
    Batten, Robert D., 1973-
    Abstract:
    The exponential rate of advances in modern communication devices in the last several years have brought us higher levels of functionality and performance as well as reductions in physical size and power consumption. To continue this rate of advancement, next generation systems require wider bandwidth and higher resolution ADCs. Additionally,...
    Resource Type:
    Dissertation
    Full Text:
    . T / R S w i t c h R e c e i v e r O p e r a t o r I n t e r f a c e B e a m A i m i n g T r a n

  • Design and analysis techniques for nano-joule ADCs and sampling linearity

    Creator:
    Brown, Thomas (Thomas William)
    Abstract:
    Two aspects of ADC system performance are addressed in this work. First, the combination of the ADC and its associated reference are co-designed for an energy constrained remote sensing system. Second, sampling linearity is mathematically analyzed as a function of frequency to provide enhanced understanding into an ADC's requisite sampling...
    Resource Type:
    Dissertation
    Full Text:
    /τ . (2.7) Substituting 1/τ = ωo = gm/C = √ 2µCOX W L ID/C and T = 1 2FCLK in (2.7) and solving

  • 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:
    scatterers at BS Rich local scatterers at MS 9 𝒚!" = 𝑮!𝒙!" +𝒘!" , 𝑗 = 1,… ,𝑁! (2-1

  • Analysis and design on low-power multi-Gb/s serial links

    Creator:
    Hu, Kangmin
    Abstract:
    High speed serial links are critical components for addressing the growing demand for I/O bandwidth in next-generation computing applications, such as many-core systems, backplane and optical data communications. Due to continued process scaling and circuit innovations, today's CMOS serial link transceivers can achieve tens of Gb/s per pin. However, most...
    Resource Type:
    Dissertation
    Full Text:
    2005 2006 2007 2008 2009 2010 2011 2012 0.5 1 10 100 500 Year Po w er e ff ic ie nc y (m W

  • A survey on continuous-time modulators : theory, designs and implementations

    Creator:
    Gao, Xiaoran
    Abstract:
    Recently, delta-sigma modulation has become a widely applied technique for high-performance analog-to-digital conversion of narrow-band signals. Most of the early designs used discrete-time structure for good accuracy and good linearity. The transfer functions are independent of the clock frequency. However, high unity-gain bandwidths of the opamps are required to satisfy...
    Resource Type:
    Masters Thesis
    Full Text:
    - hold XSh(t H(z) -. anon XDSl( Digital low-pass filter X (n) Down sampler X(t) f it Decimation flter

  • Generalized radix design techniques for low-power, low voltage pipelined and cyclic analog-digital converters

    Creator:
    Sharma, Vivek
    Abstract:
    This thesis proposes a novel technique for the design of pipelined and cyclic ADCs utilizing generalized radix gain stages. Several models have been proposed for the optimization of high performance pipelined ADCs by various researchers. This work builds upon them, using a simple but accurate model to estimate the optimal...
    Resource Type:
    Masters Thesis

  • Side channel attack resistant elliptic curves cryptosystem on multi-cores for power efficiency

    Creator:
    Yoo, Jaewon
    Abstract:
    The Advent of multi-cores allows programs to be executed much faster than before. Cryptoalgorithms use long-bit words thus parallelizing these operations on multi-cores will achieve significant performance improvement. However, not all long-bit word operations in cryptosystems are suitable for parallel execution on multi-cores. In particular, long-bit words used in Elliptic...
    Resource Type:
    Masters Thesis
    Full Text:
    operations are described in Figure 6. S1 S2 S3 S8 48 bits 32 bits R o w Column 1 0100 1 0100 11 4

  • Throughput optimization for single-hop wireless networks using network coding

    Creator:
    Tran, Tuan Tho
    Abstract:
    Recent advances in wireless technologies have helped the proliferation of wireless devices, ranging from hand-held devices such as cellular phones to more powerful mobile computing platforms as such laptops [1]. Along with that, the end users’ applications running on these devices, ranging from text message to multimedia applications such as...
    Resource Type:
    Dissertation
    Full Text:
    (N, T) = (5, 7); iterations I = 150. . 98 3.7 Simulation results for the erasure pattern (N, T) = (5

  • Via-only microwave/millimeter wave bandpass filters for LTCC applications

    Creator:
    Bhargava, Gaurav
    Abstract:
    With an increasing number of wireless applications at microwave frequencies, the frequency spectrum is becoming quite crowded. Due to this congestion, the current state of technology is leading towards upper microwave and millimeter wave spectra as they also offer other distinct advantages such as larger bandwidth and smaller component footprint....
    Resource Type:
    Masters Thesis
    Full Text:
    .................................................................................................... 71 4.5 Variation In Length Of A Filter Section With k For Different Values Of w..............73

  • Recognizing human group activities in video through mining optimal features

    Creator:
    Amer, Mohamed R.
    Abstract:
    Given a video, we would like to recognize group activities, localize video parts where these activities occur, and detect actors involved in them. To this and, we propose a novel, mid-level feature, called control point, for representing group activities. The control points are aimed at summarizing visual cues, lifting from...
    Resource Type:
    Masters Thesis
    Full Text:
    value of STIP we compute a 3x3 matrix composed of pixel gradients along x, y, t axes at each pixel

  • Opportunistic bandwidth sharing through reinforcement learning

    Creator:
    Venkatraman, Pavithra
    Abstract:
    The enormous success of wireless technology has recently led to an explosive demand for, and hence a shortage of, bandwidth resources. This expected shortage problem is reported to be primarily due to the inefficient, static nature of current spectrum allocation methods. As an initial step towards solving this shortage problem,...
    Resource Type:
    Masters Thesis
    Full Text:
    ) = ⎧⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎨ ⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎪⎩ φ(qk1)− cik1 w/ prob. 1− ηk1 φ(qkl)− cik1 − ∑l−1 t=1 cktkt+1, l = 2, 3, . . . , n w/ prob. ∏l−1

  • Understanding the ultra-wideband channel within a computer chassis

    Creator:
    Redfield, Stephen J.
    Abstract:
    Recent developments in computing technology have generated a demand for more streamlined and effective test systems. By replacing traditional in-chassis wired interconnects with a broadcast wireless system, fault detection and error susceptibility will drastically improve, input/output capabilities will expand, and routing complexity will decrease. Ultra-wideband impulse radio's (UWB-IR) characteristic multipath-immunity...
    Resource Type:
    Masters Thesis
    Full Text:
    series of short- duration sinusoidal signals s(t) = cos(2πf(t)) where f(t) is a stair-step function

  • Time and statistical information utilization in high efficiency sub-micron CMOS successive approximation analog to digital converters

    Creator:
    Guerber, Jon
    Abstract:
    In an industrial and consumer electronic marketplace that is increasingly demanding greater real-world interactivity in portable and distributed devices, analog to digital converter efficiency and performance is being carefully examined. The successive approximation (SAR) analog to digital converter (ADC) architecture has become popular for its high efficiency at mid-speed and...
    Resource Type:
    Dissertation