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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.
1

Synthesis of serial communications controller using higher abstraction level derivation (HALD) model /

Cheema, Kanwarpreet Singh. January 2001 (has links) (PDF)
Thesis (M. Eng. Sc.)--University of Queensland, 2001. / Includes bibliographical references.
2

An investigation of the effects of modelling the telecommunications delays in the current order control loops of HVDC systems /

Turner, Anthony B., 1945- January 1978 (has links)
No description available.
3

Sequence acquisition for DS/CDMA communication systems

Barghouthi, Ramzi 08 1900 (has links)
No description available.
4

Requirements analysis of federal governments international telecommunications services /

Khanna, Yogesh. January 1991 (has links)
Project report (M. Eng.)--Virginia Polytechnic Institute and State University, 1991. / Abstract. Also available via the Internet.
5

Technical competency needs assessment for the graduates of telecommunication systems at UW-Stout

Chien, Tien-chen. January 1999 (has links) (PDF)
Thesis--PlanB (M.S.)--University of Wisconsin--Stout, 1999. / Includes bibliographical references.
6

An investigation of the effects of modelling the telecommunications delays in the current order control loops of HVDC systems /

Turner, Anthony B., 1945- January 1978 (has links)
No description available.
7

HIERARCHICAL SCHEMES FOR ROUTING AND FLOW CONTROL IN COMMUNICATION NETWORKS.

MURALIDHAR, KURUDI HANUMANTHARAO. January 1985 (has links)
This dissertation describes three different hierarchical schemes for routing and flow control in communication networks. The basic idea in these schemes is to distribute the decision making capability among different hierarchical levels. A part of the decision is made at the lower level of network nodes and another part is made at the higher level of Coordinators. Specific problems at the lower level of nodes and the higher level of Coordinators are formulated in an optimization framework and solutions to these problems result in the overall control scheme. Two modes of operation for the Coordinators are identified and a step by step procedure to implement these modes of operation is also developed. Performance evaluations of these hierarchical schemes are conducted using stochastic models and simulation experiments. Different models for the nodes are used while developing these hierarchical schemes. In one of these schemes a queueing model is used to design a buffer allocation scheme to implement flow control while in another a state dependent model is used to design a combined routing and flow control scheme. The solution to this combined problem is obtained through the concepts of system stabilization. Major strong points of these hierarchical schemes are as follows. They provide a framework for integrating routing and flow control functions. They provide consideration of multiple objectives such as delay, throughput, and fairness individually. By implementing the Coordinators action at a slower time scale, the trade-off existing in information overheads and optimality can be exploited.
8

Analysis and design of simple antenna geometries for broadband high frequency communications.

Fourie, Andries Petrus Cronje. January 1991 (has links)
A thesis submitted to the Faculty of Engineering. University of the Witwatersrand. Johannesburg in fulfilment of the requirements for the degree of Doctor of Philosophy. / The general argument of the thesis is that the design of broadband antennas demands a thorough understanding of the factors influencing the current distribution on antenna wires. Specifically. current distribution concepts are used to improve the evaluation and design of small broadband antennas for the high frequency (HF) 2 to 30 MHz range. The current distribution on an antenna governs its input impedance, radiation efficiency and radiation patterns. (Abbreviation abstract) / Andrew Chakane 2018
9

New techniques of injection locking in communication systems.

January 1993 (has links)
by Wong, Kwok-wai. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1993. / Includes bibliographical references (leaves 90-93). / DEDICATION / ACKNOWLEDGEMENTS / ABSTRACT / Chapter CHAPTER 1 --- INTRODUCTION --- p.1 / Chapter CHAPTER 2 --- BASIC OSCILLATOR DESIGN --- p.5 / Chapter CHAPTER 3 --- FUNDAMENTAL INJECTION LOCKING --- p.12 / Chapter 3.1 --- INTRODUCTION --- p.12 / Chapter 3.2 --- NONLINEAR OSCILLATOR MODELS --- p.13 / Chapter 3.3 --- TYPES OF INJECTION LOCKED OSCILLATOR --- p.24 / Chapter 3.4 --- INJECTION LOCKING CHARACTERISTICS --- p.26 / Chapter 3.5 --- CONCLUSION --- p.31 / Chapter CHAPTER 4 --- SUBHARMONIC INJECTION LOCKING --- p.32 / Chapter 4.1 --- INTRODUCTION --- p.32 / Chapter 4.2 --- SUBHARMONIC INJECTION LOCKING --- p.32 / Chapter 4.3 --- SUBHARMONIC INJECTION LOCKING CHARACTERISTICS --- p.36 / Chapter 4.4 --- CONCLUSION --- p.40 / Chapter CHAPTER 5 --- EXPERIMENTAL INVESTIGATIONS ON INJECTION LOCKING --- p.41 / Chapter 5.1 --- INTRODUCTION --- p.41 / Chapter 5.2 --- EXPERIMENTAL CHARACTERISTICS --- p.43 / Chapter 5.3 --- NON-INTEGRAL SUBHARMONIC LOCKING --- p.53 / Chapter 5.3.1 --- Nonlinear feedback model --- p.53 / Chapter 5.3.2 --- Circuit description --- p.55 / Chapter 5.3.3 --- Experimental results --- p.59 / Chapter 5.3.4 --- Summary --- p.64 / Chapter 5.4 --- SELECTIVE SUBHARMONIC LOCKING RANGE ENHANCEMENT --- p.65 / Chapter 5.4.1 --- Mulit-feedback nonlinear model --- p.65 / Chapter 5.4.2 --- Circuit description --- p.65 / Chapter 5.4.3 --- Experimental results --- p.69 / Chapter 5.4.4 --- Summary --- p.71 / Chapter 5.5 --- FEEDBACK TYPE INJECTION LOCKED OSCILLATOR --- p.72 / Chapter 5.5.1 --- Feedback type injection locked oscillator model with different injection points --- p.72 / Chapter 5.5.2 --- Circuit description --- p.73 / Chapter 5.5.3 --- Experimental results --- p.76 / Chapter 5.5.4 --- Summary --- p.76 / Chapter 5.6 --- PHASE TUNING BEYOUND 180 DEGREES BY INJECTION LOCKING --- p.79 / Chapter 5.6.1 --- Phase change by single injection locking --- p.79 / Chapter 5.6.2 --- Phase change by cascaded injection locking --- p.80 / Chapter 5.6.3 --- Experimental results --- p.85 / Chapter 5.6.4 --- Summary --- p.88 / Chapter 5.7 --- CONCLUSION --- p.88 / Chapter CHAPTER 6 --- CONCLUSION --- p.89 / REFERENCES --- p.90 / LIST OF ACCEPTED AND SUBMITTED / PUBLICATIONS DURING THE PERIOD OF STUDY
10

Multilevel diversity coding with independent data streams.

January 1995 (has links)
by Hau Ka Pun. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1995. / Includes bibliographical references (leaves 102-[103]). / Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- A General Review of MDCS --- p.1 / Chapter 1.2 --- MDCS with Independent Data Streams --- p.4 / Chapter 1.3 --- Admissible Coding Rate Region --- p.5 / Chapter 1.4 --- Distribution of Information in Different Encoders --- p.6 / Chapter 1.5 --- Multilevel Diversity Coding by Superposition --- p.8 / Chapter 1.6 --- Optimality of Superposition --- p.11 / Chapter 1.7 --- Different MDCS coding schemes --- p.17 / Chapter 2 --- MDCS's with Three Encoders --- p.20 / Chapter 2.1 --- 2-level-3-encoder MDCS --- p.21 / Chapter 2.2 --- 3-level-3-encoder MDCS --- p.31 / Chapter 3 --- Symmetrical Multilevel Diversity Coding System --- p.49 / Chapter 3.1 --- Introduction --- p.49 / Chapter 3.2 --- "SMDCS[2,m,(l,m)]" --- p.53 / Chapter 3.3 --- "SMDCS[3, m,(l,2,m)]" --- p.56 / Chapter 3.4 --- "SMDCS[3,m,(l,3,m)]" --- p.62 / Chapter 3.5 --- "SMDCS[4,4, (1,2,3,4)]" --- p.66 / Chapter 4 --- Convex Analysis of Coding Rate Region of DCS --- p.72 / Chapter 4.1 --- Introduction --- p.72 / Chapter 4.2 --- Polyhedral Sets --- p.73 / Chapter 4.3 --- Addition of Polyhedral Sets --- p.75 / Chapter 4.4 --- Algorithms to Enumerate Extreme Points and Decompose Tuples --- p.86 / Chapter 5 --- Conclusion and Further Research --- p.90 / Chapter 5.1 --- Conclusion --- p.90 / Chapter 5.2 --- Suggestions for Further Research --- p.91 / Appendix --- p.93 / Chapter A --- Proof of Equivalence of rsp and Rsp in Chapter3 --- p.93 / Chapter A.1 --- r2m1m and R2m1m --- p.93 / Chapter A.2 --- r33123 and R33123 --- p.94 / Chapter A.3 --- r441234 and. R441234 --- p.96 / Chapter B --- A Class of MDCS Where Superposition is Always Not Optimal --- p.99 / Bibliography --- p.102

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