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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.

A study of modulation with particular emphasis on suppressor-grid modulation

Owen, Clure Halma 05 1900 (has links)
No description available.

An addressing scheme for random access-discrete address signals

Miller, Jerrold. January 1964 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1964. / eContent provider-neutral record in process. Description based on print version record. Bibliography: l. 41.

Digital simulation of delta modulation

Matsushita, Jack Shigeo January 1960 (has links)
This thesis describes the simulation of a digital communication system on a digital computer. Delta modulation was chosen as the system, and its mode of action is first described. Several variations of the basic system are possible. In order to get the best transmission quality, a careful choice must be made of the system and of its design parameters. Conventional methods of finding these optimum parameters have difficulties which digital simulation can circumvent. The programming of the ALWAC III-E computer for this task is described. Difficulties were encountered due to the modest speed of the computer. The simulation experiments yielded many results of interest concerning the operation of both simple and complex delta modulation systems with different design parameters, and allowed an optimum system to be designed. Where it is possible to compare results with previous experimental work, the agreement is good. / Applied Science, Faculty of / Electrical and Computer Engineering, Department of / Graduate

An experimental investigation of a low distortion mixer using a beam-deflection tube

Smith, Guy Herbert 05 1900 (has links)
No description available.

Trellis coded modulation with σ-tree signal constellations

Zaidan, Mahdi Yahya 05 1900 (has links)
No description available.

A study of the concept of envelope and instantaneous frequency

Frase, Lawrence Evan 12 1900 (has links)
No description available.

An external doppler frequency modulation technique for a laser communication system

Hester, Stephen DeLos 08 1900 (has links)
No description available.

A peer-to-peer communication system based on Walsh-Hadamard codes for fading environments /

Moranvil, William. January 1900 (has links)
Thesis (M.S.)--Oregon State University, 2005. / Printout. Includes bibliographical references (leaves 49-50). Also available on the World Wide Web.

Measurement of phase shifts of a rotary vane micro wave attenuator

Shodhan, Kuldip Chandravadan, January 1969 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1969. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

Performance evaluation of some (d,k) codes

Coetzee, Chris Stefan 30 September 2014 (has links)
M.Ing. (Electrical & Electronic Engineering) / Coding is indispensable in modem communications and storage systems. For instance, a Reed-Solomon error-correction code ensures higher data integrity for the Compact Disc (CD) system. Modulation codes, such as the( d, k) codes, can furthermore be employed to enable synchronization between transmitter and receiver (or between the read and write processes in storage systems), and also to achieve compliance with bandwidth restrictions. In some cases, a 'combined' code is designed to function both as an error control code and a (d, k) modulation code. In this study, we consider such an existing class of error control (d, k) block codes. Of particular interest is the performance of these codes, determined mostly in terms of the probability of block error over certain selected channels. It is important to be able to judge or predict the performance of a communication system in terms of the probability of receiving incorrect information, and this probability depends not only on the specific error control code used, but also on the statistical structure of the channel error processes. The main contributions of this thesis are seen to be the following: 1) New codes and improvements on previous codes, originating from the generalization of existing theory. 2) Mathematical bounds and approximations on block error rates, compared with measured results from computer simulations.

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