# 2006 University of South Africa All rights reserved Printed and published by the University of South Africa Muckleneuk‚ Pretoria COM101-X/1/2007 3B2 97982768 Comter-styl CONTENTS Study Unit FOREWORD Page (v) 1 1 1 2 3 7 10 11 18 28 28 33 33 33 37 39 41 45 45 47 47 47 49 50 53 57 59 59 iii 1 A BRIEF HISTORY OF COMMUNICATION 1. 1.1 1.1.1 1.1.2 1.1.3 1.1.4 1.1.4.1 1.1.5 1.2 1.3 Introduction Stages in the history of human communication Age of speech and language Age of writing
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Stakeholders of Bangladesh Telecommunications Sector BTRC Bangladesh Telecommunication Regulatory Commission (BTRC) is an independent Commission established under the Bangladesh Telecommunication Act‚ 2001 (Act no. 18 of 2001) published by the Parliament in the Bangladesh Gazette‚ extraordinary issue of April 16‚ 2001. BTRC started functioning from January 31‚ 2002. In the intervening years it has pursued a vision to facilitate affordable telecommunication services of acceptable quality for all
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presence in DTH (Direct-To-Home) TV services‚ commercial radio and TV programming. Astro‚ the subscription TV service began operations in 1996 with 22 channels and currently broadcasts over 119 pay-TV channels in four major languages across Malaysia and Brunei to more than 2.93 million households. Its state-of the-art digital broadcast facilities at the All Asia Broadcast Centre and at the Cyberjaya multiplex are capable of handling digital TV‚ radio and data services on satellite and terrestrial broadcast
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The hardware is inexpensive and does not require an antenna. Radio A network that uses electromagnetic radio waves operates at radio frequency and its transmissions are called RF transmissions. Each host on the network attaches to an antenna‚ which can both send and receive RF. Satellites Radio transmissions do not bend round the surface of the earth‚ but RF technology combined with satellites can provide
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coordinates the particular transmissions involving adjacent admittance factors so that all incorporate the use of identical route (or identical channels‚ because so many current admittance factors possess many radio. ) Some great benefits of this method usually are that will a lesser amount of radio selection should be applied for each in the future involving coverage‚ as with the particular single-channel structures involving 3G in addition to CDMA cell networks‚ known that customer equipment aren’t
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NFC- enabled devices over short distances. Handsets with built-in NFC will dramatically simplify the way consumer devices interact with one another. • Near Field Communication (NFC)‚ as an emerging and promising technology‚ is an integration of Radio Frequency
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INTRODUCTION 1. The advent of World War 1 saw two new dimensions being added to warfare one of air and other of under water. But probably the most important element to be put to use for war in the 20th century was the use of radio waves and the associated electronics. They were used first in radio communication and later on in the fields of radar. Under the stimulus of war‚ technology advanced rapidly and new systems provided greater ranges‚ greater precision and greater capacity. It was a shock to the designers
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required with the vast increase in the quantity of items available on the market. It developed a culture of consumerism among the American people. With the help of radio; a new industry‚ advertisers developed a new way to increase demand for products. Baseball stars became national figures as many people listened to sporting events on the radio and advertisers used this by getting these people to endorse the products of a company. The American people saw these national figures using or wearing those products
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Wireless Power Transmission for Solar Power Satellite (SPS) (Second Draft by N. Shinohara) 1. Theoretical Background It is known that electromagnetic energy also associated with the propagation of the electromagnetic waves. We can use theoretically all electromagnetic waves for a wireless power transmission (WPT). The difference between the WPT and communication systems is only efficiency. The Maxwell’s Equations indicate that the electromagnetic field and its power diffuse to all directions. Although
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Introduction Just a few clicks on the mouse and a whole world of information are available for free. The internet‚ whilst largely contributing to declining newspaper‚ magazines and books sales‚ decreasing the percentage of advertising on TV and radio‚ increasing of internet piracy and illegal downloading of films and music. Internet can at least provide a huge resource for journalist‚ authors‚ musicians‚ photographers‚ producers‚ editors‚ directors and all information workers. On the other
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