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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
21

Simulation of spread spectrum communication systems

Nguyen, Chien Ngoc 12 1900 (has links)
No description available.
22

CAN signal quality analysis and development of the signal processing on a FPGA

Uhlin, Jakob January 2014 (has links)
This master thesis report is a part of the thesis project conducted by Jakob Uhlin at Syntronic R R and D, Stockholm Sweden. The objective of this thesis is to develop a way to process the signal being sent on a CAN-bus and subsequently analyse its quality and its source in the network. A process of gathering appropriate theories and data has been done, parallel with the development of the analyzer module. The intelligence is implemented in an FPGA through the hardware description language VHDL. In this way, the algorithms can process the data in a real-time domain. The central findings and conclusions have been that is possible to analyze the signal quality of a CAN message properly on a FPGA.
23

The information capacity of multiuser channels /

Rezaeian, Mohammad Jafar. Unknown Date (has links)
Thesis (PhD)--University of South Australia, 2002.
24

Performance analysis of wireless LAN signals transmitted over a ricean fading channel in a pulsed-noise preference environment /

Spyrou, Evangelos. January 2004 (has links) (PDF)
Thesis (M.S. in Electrical Engineering and M.S. in Systems Engineering)--Naval Postgraduate School, Sept. 2004. / Thesis Advisor(s): R. Clark Robertson. Includes bibliographical references (p. 67-68). Also available online.
25

Practical application of random vibration signal analysis in structural dynamics /

Allen, Yu-Chin L. January 1994 (has links)
Thesis (M.S.)--Rochester Institute of Technology, 1994. / Typescript. Includes bibliographical references (leaf 91).
26

Estimation of the spectral moments and quadrature cross-correlation function and their application to troposcatter systems

Gupta, Ashok Kumar, January 1900 (has links)
Thesis--University of Wisconsin--Madison. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 262-268).
27

Optical heterodyne detection of a randomly distorted signal beam /

Moreland, James Patrick January 1967 (has links)
No description available.
28

Single and multiple electromagnetic scattering by dielectric obstacles from a resonance perspective

Riley, Douglas J. January 1986 (has links)
A new application of the singularity expansion method (SEM) is explored. This application combines the classical theory of wave propagation through a multiple scattering environment and the SEM. Since the SEM is generally considered a theory for surface currents on conducting scatterers, extensions are made which permit, under certain conditions, a singularity expansion representation of the electromagnetic field scattered by a dielectric scatterer. Application of this expansion is then made to the multiple scattering case using both single and multiple interactions. A resonance scattering tensor form is used for the SEM description which leads to an associated tensor form of the solution to the multiple scattering problem with each SEM pole effect appearing explicitly. The coherent field is determined for both spatial and SEM parameter random variations. A numerical example for the case of an ensemble of lossy dielectric spheres is made. Accurate resonance expansions for the single scattering problem are derived, and resonance trajectories based on the Debye relaxation model for the refractive index are introduced. Application of the resonance expansions to the multiple scattering results for a slab containing a distribution of spheres with varying radii is made. Conditions are discussed for when the hybrid theory is appropriate. / Ph. D.
29

Combating channels with long impulse response using combined turbo equalization and turbo decoding.

January 2000 (has links)
by Chan Yiu Tong. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2000. / Includes bibliographical references (leaves 56-[59]). / Abstracts in English and Chinese. / Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- Communications and Coding Technology --- p.2 / Chapter 1.2 --- The Emerge of Turbo Codes --- p.3 / Chapter 1.3 --- The Extension of Turbo Principle --- p.3 / Chapter 1.4 --- Receiver Structures for Practical Situations --- p.4 / Chapter 1.5 --- Thesis Overview --- p.5 / Chapter 2 --- ISI Channel Model and Channel Equalization --- p.6 / Chapter 2.1 --- A Discrete Time ISI Channel Model --- p.6 / Chapter 2.1.1 --- Optimum Maximum Likelihood Receiver --- p.8 / Chapter 2.1.2 --- The Whitened Matched Filter --- p.11 / Chapter 2.2 --- Equalization Techniques for Combating ISI --- p.13 / Chapter 2.2.1 --- Linear MMSE Equalizer --- p.13 / Chapter 2.2.2 --- MLSE Equalizer in Viterbi Algorithm --- p.15 / Chapter 3 --- An Overview of Turbo Codes --- p.18 / Chapter 3.1 --- The Turbo Encoder --- p.19 / Chapter 3.2 --- The Turbo Interleaver --- p.21 / Chapter 3.3 --- The Iterative Decoder --- p.22 / Chapter 3.3.1 --- The MAP Algorithm --- p.23 / Chapter 3.3.2 --- The Max-Log MAP Algorithm --- p.25 / Chapter 3.3.3 --- The Log-MAP Algorithm --- p.28 / Chapter 4 --- Receivers for Channels with Long Impulse Responses --- p.29 / Chapter 4.1 --- Shortcomings for the Existing Models --- p.30 / Chapter 4.2 --- Proposed System Architecture --- p.30 / Chapter 4.2.1 --- Optimized Model for Channel Shortening Filter --- p.31 / Chapter 4.2.2 --- Method One - Separate Trellises for EQ and DEC --- p.35 / Chapter 4.2.3 --- Method Two - Combined Trellises for EQ and DEC --- p.37 / Chapter 5 --- Performance Analysis --- p.40 / Chapter 5.1 --- Simulation Model and Settings --- p.40 / Chapter 5.2 --- Performance Expectations --- p.43 / Chapter 5.3 --- Simulation Results and Discussions --- p.49 / Chapter 6 --- Concluding Remarks --- p.55 / Bibliography --- p.56
30

Lectures on communication theory

January 1952 (has links)
D. Gabor. / "April 3, 1952." Lectures from the Research Laboratory of Electronics, Massachusetts Institute of Technology, Fall Term, 1951. / Bibliography: p. 47-48. / Army Signal Corps Contract No. DA36-039 sc-100 Project No. 8-102B. Dept. of the Army Project No. 3-99-10-022.

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