Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 226 for “"GAUSSIAN NOISE"”.
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Non-Gaussian Noise in Superconducting Circuits
… to man-made systems, living things embrace noise and use it to further their functionality. It is therefore not surprising that some lifeforms couple strongly to environmental fluctuations, and can leverage non-Gaussian noise to gain a competitive edge over their peers. In this thesis, I …
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Wavelet Thresholding for Non (Necessarily) Gaussian Noise
… both models have been mainly studied for Gaussian noise. <br>Later the first model was investigated by others for other types of noises. <br>The second model was investigated by Gao for non-Gaussian noise. <br>In this thesis I will consider both types of approaches for non-Gaussian noise. …
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Non-Gaussian noise spectroscopy with superconducting qubits
… error-correction protocols assume that the noise causing decoherence is described by Gaussian statistics. However, the Gaussianity assumption breaks down when the quantum system is strongly coupled to a sparse environment or has a non-linear response to external degrees of freedom. Here, we …
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Low Frequency Noise in Semiconductors and Metals (Statistics, Gaussian (Noise)
Properties of l/f noise (low frequency resistance fluctuations) are analyzed using the results of a number of experiments, several of which are unique to our laboratory. Measurements of thermally activated noise spectral features, as well as the effect of a surface potential of the noise kinetics …
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State Estimation in Dynamical Robotic System with Non-Gaussian Noise
… robotic sensor measurements are contaminated by Gaussian noise. However, in practical applications, the noise is often non-Gaussian, heavy-tailed, or even multi-modal. In this thesis, we develop algorithms that perform state estimation in dynamical systems with arbitrary noise and prove their …
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Capacity of Gaussian noise channels with side information and feedback
… the discrete-time, finite-state additive white Gaussian noise channel. Under perfect instantaneous side-information, the capacity achieving power allocation is determined by the well-known water-filling procedure. The basic water-filling power allocation is extended to include minimal rate and / …
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Signal Detection and Modulation Classification in Non-Gaussian Noise Environments
… in the literature assume that the additive noise has a Gaussian distribution. However, while this is a good model for thermal noise, various studies have shown that the noise experienced in most radio channels, due to a variety of man-made and natural electromagnetic sources, is non-Gaussian …
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Volatility modeling and estimation of high-frequency data with Gaussian noise
Thesis (Ph. D.)--Massachusetts Institute of Technology, Sloan School of Management, 1996.
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A power interval perspective on additive white Gaussian noise (AWGN) channels
We present a new perspective on additive white Gaussian noise (AWGN) channels that separates user and channel attributes. Following this separation, various questions concerning achievability and successive decoding can be reformulated as properties of the set of user attributes, which can be …
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Detection of signals corrupted by the combination of Gaussian and Non-Gaussian noise
The detection of signals in the presence of noise is one of the most basic and important problems encountered by communication engineers. Although the literature abounds with analyses of communications in Gaussian noise, relatively little work has appeared dealing with communications in …
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Coding and capacity for additive white Gaussian noise multi-user channels with feedback
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1979.
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Efficient communication over additive white Gaussian noise and intersymbol interference channels using chaotic sequences
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1996.
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Signal detection in fractional Gaussian noise and an RKHS approach to robust detection and estimation
… the problem of signal detection in fractional Gaussian noise is considered. To facilitate the study of this problem, several results related to the reproducing kernel Hilbert space of fractional Brownian motion are presented. In particular, this reproducing kernel Hilbert space is characterized …
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Performance of cooperative space time coding with spatially correlated fading and imperfect channel estimation
… fading and imperfect channel estimation in Gaussian as well as impulsive noise is presented. Closed form expressions for the pairwise error probability conditioned on the estimated channel gains are derived by assuming the components of the received vector are independent given the estimated …
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Optimized Image Compressed Sensing And Transmission Through Wireless Channels
… during transmission through an additive white gaussian noise wireless channel. The poor rate-distortion performance that accompanies compressed sensing after applying quantization has led to several works in quantized compressed sensing. However, most of these works have less consideration of …
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Fractional Diffusion in Gaussian Noisy Environment
… the moment bounds of the solution when the noise has Reisz kernel as space covariance. Along the way, we obtain some new properties of the fundamental solutions. Chapter 4 studies the time-fractional diffusion with fractional Gaussian noise. We obtain conditions so that the square integrable …
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ΜΕΛΕΤΗ ΚΑΙ ΑΞΙΟΛΟΓΗΣΗ ΤΗΣ ΣΥΜΠΕΡΙΦΟΡΑΣ Μ-ARY ΣΥΜΒΑΤΩΝ PSK ΣΥΣΤΗΜΑΤΩΝ ΨΗΦΙΑΚΗΣ ΔΙΑΜΟΡΦΩΣΗΣ ΜΙΚΡΟΚΥΜΑΤΙΚΩΝ ΔΟΡΥΦΟΡΙΚΩΝ ΖΕΥΞΕΩΝ ΠΑΡΟΥΣΙΑ ΠΑΡΕ...
… IN ENVIRONMENTS CHARACTERIZED BY THE PRESENCE OF GAUSSIAN NOISE, INTERFERENCE AND/OR FADING HAS BEEN EXTENSIVELY ANALYSED. HOWEVER IT IS WELL KNOWN THAT CERTAIN COMPONENTS OF NOISE ORIGINATING IN VARIOUS COMMUNICATION CHANNELS OF TEN EXHIBIT IMPULSIVECHARACTERISTICS, I.E. BURSTS OF LARGE AMPLITUDE …
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Parametric estimation of superimposed signals
… family with unknown parameters in white Gaussian noise was studied. New closed-form expressions of the Cramer-Rao bound (CRB) for parametric estimation of superimposed signals in white Gaussian noise were derived. The effect of the amplitude correlation structure of superimposed signals …
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Error and erasure decoding for a CDPD system
… hopping technique. The CDPD system employs Gaussian minimum shift keying (GMSK) as a modulation scheme and a Reed-Solomon code for error control to transmit high-quality data in the mobile and wireless environment. Most current CDPD receivers use errors only decoding of the Reed-Solomon …
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