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.
Results
Showing 1 to 20 of 90 for “"pseudo-random"”.
-
Optical transport of pseudo-random coatings
… techniques to model the complex and often pseudo-random nature of structured coatings are not yet fully adequate. In this thesis I will address this problem. Specifically, I will develop improved techniques that can be used on different kinds of coatings: mesoporous metals, random two-phase …
-
Minimum-variance tracking of pseudo-random number codes
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1981.
-
PCM television bandwidth reduction using pseudo-random noise
Thesis: M.S., Massachusetts Institute of Technology, Department of Electrical Engineering, 1961
-
Multi-Reference Pseudo-Random Phase-Encoded Joint Transfrom Correlation
We propose and demonstrate the superiority of using a phase SLM only in a multi-reference phase encoded joint transform correlator(JTC) compared to an ordinary JTC. Maximal length sequences are shifted to form two dimensional orthogonal arrays referred as m-arrays. The phase mask is used in one …
-
Extremal problems in pseudo-random graphs and asymptotic enumeration
… in extremal graph theory and the theory of random graphs. It consists of three more or less independent parts that all fit into one bigger picture -- the meta-problem of describing the structure and properties of large random and pseudo-random graphs. Given a positive constant c, we call an …
-
FPGA Implementation of a Pseudo-Random Aggregate Spectrum Generator for RF Hardware Test and Evaluation
… FPGA-based TandE tool that allows for real-time pseudo-random aggregate signal generation for testing RF receiver hardware (such as communication receivers, spectrum sensors, etc.). In particular, a framework is developed for an FPGA-based implementation of a test signal emulator that generates …
-
Pseudo Random Arterial Modulation (PRAM): A Novel ASL Approach to Measure Flow and Blood Transit Times
The Pseudo Random Arterial Modulation (PRAM) is a non-invasive MRI based method to measure blood flow. It does not require any contrast agent but rather uses water protons in the body as the contrast. PRAM is based on a pseudo random sequence of inversions and non-inversions of the arterial blood …
-
Computer methods for generating pseudo-random numbers from Pearson distributions and mixtures of Pearson and uniform distributions
… done concerning the generation and testing of pseudo-random numbers. Computer subroutine programs written in FORTRAN IV are given for the generation of pseudo-random numbers from Pearson distributions as well as from any combination of mixtures of two Pearson distributions, a normal …
-
A Statistical Evaluation of Algorithms for Independently Seeding Pseudo-Random Number Generators of Type Multiplicative Congruential (Lehmer-Class).
<p>To be effective, a linear congruential random number generator (LCG) should produce values that are (a) uniformly distributed on the unit interval (0,1) excluding endpoints and (b) substantially free of serial correlation. It has been found that many statistical methods produce inflated Type I …
-
Pseudorandom functions with structure : extensions and implications
… part of this work, we introduce a new type of pseudo-random function for which "aggregate queries" over exponential-sized sets can be efficiently answered. We show how to use algebraic properties of underlying classical pseudo random functions, to construct such "aggregate pseudo-random …
-
The PURGE3, MIX1 and MIX2 subroutines
… that has been done concerning the generation of pseudo-random numbers. The PURGE3, MIX1, and MIX2 subroutines, written in FORTRAN IV to be run on the IBM 360 computer system, are used for the generation of pseudo-random numbers from a family of Pearson distributions as well as from any …
-
Random Number Generators
This paper is about pseudo-random number generators. In particular it is about pseudo-random number generators for the 16 bit computers. These machines include the IBM PC, XT, and AT. Thus this class comprises a large share of the PC market. The aim of the paper is to find a fast implementation of …
-
The quantum Fourier transform and quantum chaos
… example of complex quantum operations are 'pseudo-random' maps. These are operators which pass statistical tests of randomness but can be efficiently implemented on a quantum computer. I explore the importance of pseudo-random maps for the study of quantum chaos and a host of quantum …
-
Automated Scenario Generation Using Halton Sequences for the Verification of Autonomous Vehicle Behavior in Simulation
… and does not guarantee scenario coverage. Pseudo-random scenario generation is a faster option, but still does not ensure coverage of the state space. Therefore, this study proposes the use of Halton sequences to automatically generate scenarios for autonomous vehicle testing in simulation. …
-
Room reconstruction and navigation using acoustically obtained room impulse responses and a mobile robot platform
… that uses a combination of active sonar and a pseudo-random acoustic signal to navigate and reconstruct an unknown environment. The robot sends the pseudo-random signal into the environment and records the resulting response. This response is processed to gain information on the robot's …
-
Software-Defined Radio Implementation of Two Physical Layer Security Techniques
… a single-carrier Alamouti coding system with pseudo-random phase shifts applied to each transmit antenna, referred to as Phase-Enciphered Alamouti Coding (PEAC). The intended receiver has knowledge of the pseudo-random sequence and can undo these phase shifts when performing the Alamouti …
-
A pseudo one-time-pad based security system
… The purpose of this thesis is to outline a pseudo One-Time-Pad-based security system whereby deployment requirements are satisfied while leveraging the inherent strengths of the One-Time-Pad encryption scheme. The One-Time-Pad, also known as the Vernam Cipher, provides unconditional security …
-
A fast procedure for generating random numbers by a modification of the Marsaglia-Maclaren method
… congruential generators in order to produce a pseudo random number sequence uniformly distributed in the range [0,2³⁵]. Their method is a considerable improvement compared with the primitive linear congruential method at the cost of greater generation time. In this thesis, a simple modification …
Page 1 of 5