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Filtering by: Creator Hansen, E. M. Remove constraint Creator: Hansen, E. M. Committee Member Liu, Huaping Remove constraint Committee Member: Liu, Huaping Degree Name Master of Science (M.S.) Remove constraint Degree Name: Master of Science (M.S.)

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  • A Microwave Signal Correlator Based on Parametric Pumping of Spin Waves

    Creator:
    Hansen, Mikkel N.
    Abstract:
    This work demonstrates correlation of microwave signals encoded with 16-bit codes using the parametric interaction of spin waves. Signal processing correlators are devices that compare two signals, such as a reference code and a received code, where the output indicates the similarity between the signals. Correlators are used in communication...
    Resource Type:
    Masters Thesis
    Full Text:
    ∗ e−2kd (2.2b) fBVMSW = √ fh ( fh + fm 1− e−kd kd ) (2.2c) where fh = γH0, fm = γM , and k is the

  • Prototyping a triple-layer phoswich detection system

    Creator:
    Duncan, Christopher L.
    Abstract:
    Multi-layer optically coupled scintillation based radiation detectors, known as phoswich detectors, have rapidly evolved in recent years. During the same time, digital signal processing has improved radiation discrimination accuracy and enhanced reliability, while reducing complexity and size of traditional analog signal processing methods. A new generation of high-speed radiation detectors...
    Resource Type:
    Masters Thesis
    Full Text:
    2 2 1 1 1 1 8 1 1 2 1 o c o m v EdE e NZ dx m v I π β β β β β

  • Ultra low capacitance RFIC probe

    Creator:
    Jacob, Michael E.
    Abstract:
    In Radio Frequency Integrated Circuits (RFIC) or high frequency digital ICs, there is a demand to probe the internal nodes for testing. The ultra low capacitance RFIC probe presented in his work is a flexible tool for these applications. The probe utilizes the coupling between a tungsten needle and the...
    Resource Type:
    Masters Thesis
    Full Text:
    1E101E8 4E10 -50 -40 -30 -20 -10 -60 0 freq, Hz dB (H 1s _E M D S ) dB (H 1 s_ P ro b e 2

  • 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:
    x 1010 -90 -80 -70 -60 -50 -40 frequency(Hz) m ag ni tu de s qu ar e, dB Sr(t

  • 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:
    !!!! (!!!)! ! !"#  (!!!) ⋯ 𝑒!!!! (!!!)! ! !"#  (!!") !×!"     (3-37)   𝑴! = 𝑯!𝑩! = 𝑚!! 𝑚!" ⋯ 𝑚!! 𝑚

  • 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:
    correlation over the range I m N and dividing by N, e(m) çarg{R(m)}z(N+1)vT, (3.5.3) where e(m) = arg{R(m

  • 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:
    quadrature part is E[cI(t)cQ(t)] = E[∑ an(t) cos(φn(t))∑ am(t) sin(φm(t))mn ]. (2.11) Since the paths

  • 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
    Full Text:
    never have materialised. I also want to thank Prof. Huaping Liu, Roger Traylor and Prof. William M

  • Layout dependent and bias independent scalable substrate model for RF MOSFETs

    Creator:
    Suravarapu, Ravikanth
    Abstract:
    The dependence of the substrate resistance, R[subscript sub], for MOS transistor RF modeling on transistor biasing and layout is studied from device simulations and measurements. Though R[subscript sub] is found to be bias dependent, the error incurred by assuming a constant value equal to the DC resistance is not significant....
    Resource Type:
    Masters Thesis
    Full Text:
    resistance as the finger with iii = 2, nr 3, i. e., point 'B'. Next, if point 34 'D' is known from

  • A study of basic building blocks of analog-to-digital delta-sigma modulators

    Creator:
    Guo, Yuhua
    Abstract:
    In this thesis, a novel Direct-Charge-Transfer (DCT) integrator structure is proposed, which can settle much faster than regular switch-capacitor integrators. A new Spread-Spectrum Dynamic Element Matching (SS-DEM) algorithm is also introduced, which can effectively spread or shape the nonlinearity error of multi-bit DAC in the feedback path, thus improve the...
    Resource Type:
    Masters Thesis
    Full Text:
    ) Spectra of y, the input to the DAC; (b) Spectra of Y2, the output of the DAC; (c) Spectra of m, the output