in amplitude (voltage) Frequency Shift Keying Change in frequency Phase Shift Keying Change in Phase D) How do modems get faster transmission (QAM) QAM is a modulating scheme by changing the amplitude shift keying or amplitude modulation Higher modulation allowing more information to be sent per baud Carrier wave contains more information per baud being sent E) Difference between baud rate and bits per second Baud Rate number of times modem sends a new signal Bits Per Second Amount
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STRATHMORE UNIVE ERSITY FACULT OF INFO TY ORMATION TECHNOLOGY ACHELOR O SCIENC IN TELEC OF CE COMMUNIC CATIONS BA BTC 120 Basic Dat and Voice Communica 02: ta ations DATE: 13th March 20 3 012 Instructio ons: Answer q question 1 and any other t questions d two s All Quest tions carry 20 marks each HRS TIME: 2 H QUESTIO 1 (COMPULSORY) ON a. Match the followin functions t a layer of th OSI model h ng to he i. ii. iii. iv. v. (5 Marks) Reliable pr rocess-to-process
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Data transmission‚ digital transmission‚ or digital communications is the physical transfer of data (a digital bit stream) over a point-to-point or point-to-multipoint communication channel. Examples of such channels are copper wires‚ optical fibres‚ wireless communication channels‚ and storage media. The data are represented as an electromagnetic signal‚ such as an electrical voltage‚ radiowave‚ microwave‚ or infrared signal. Data representation can be divided into two categories: Digital
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Continuously variable slope delta Modulator INTRODUCTION:- Continuously variable slope delta modulation (CVSD or CVSDM) is a voice coding method. It is a delta modulation with variable step size (i.e. special case of adaptive delta modulation)‚ first proposed by Greefkes and Riemens in 1970. CVSD encodes at 1 bit per sample‚ so that audio sampled at 16kHz is encoded at 16kbit/s. The encoder maintains a reference sample
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LETTER OF RECOMMENDATION I have known S.DAVIDSON SUNDARSINGH for the past four years and have handled for him Solid-state circuits‚ Analog Modulation and Systems‚ Computer Communications and the related laboratories. In addition I have been his class counsellor for the same period. He stood 2nd in a class of 66 in the course work “Analog Modulation and systems” by scoring 92%‚ and has been consistently working hard to achieve his academic goals. Based on his remarkable grasping power and diligence
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Master of Science in Internetworking – MS Thesis Examiner and Supervisor: Prof. Björn Pehrson bjorn@it.kth.se Powerline Carrier (PLC) Communication Systems Khurram Hussain Zuberi zuberi@ieee.org 9 September 2003 Department of Microelectronics and Information Technology‚ IMIT Royal Institute of Technology‚ KTH IT-Universitetet‚ Kista‚ Stockholm‚ Sweden Master Thesis – Powerline Carrier (PLC) Communication Systems Master of Science in Internetworking Department of Microelectronics
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Q1. Various digital-to-digital encoding techniques are as follows: a) Signal spectrum – a transmission contains lack of high frequency components which means less bandwidth is required and direct current component is also desirable. With no dc component‚ ‘ac’ coupling via transformer is possible. Finally‚ the magnitude of the effects of signal distortion and interference depend on the spectral properties of the transmitted signal. b) Clocking – to provide a separate clock lead to synchronize the
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Analog Communication Theory: A Text for EE501 Michael P. Fitz The Ohio State University fitz.7@osu.edu Fall 2001 2 Note to Students. This text is an evolving entity. Please help make an OSU education more valuable by providing me feedback on this work. Small things like catching typos or big things like highlighting sections that are not clear are both important. My goal in teaching communications (and in authoring this text) is to provide students with 1. the required theory‚ 2. an insight
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Course Design Guide NTC/362 Version 1 1 Syllabus College of Information Systems & Technology NTC/362 Version 1 Fundamentals of Networking Copyright © 2011 by University of Phoenix. All rights reserved. Course Description This course provides a foundation in the basic telecommunications and networking technologies fundamental to the industry and to the broad field of telecommunications. Analog‚ digital‚ and radio frequency technologies are covered. Also covered in this course is an introduction
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You are allowed to bring one (doublesided) page of handwritten notes to the test. Exam will contain multiple choice‚ fillin missing words‚ define‚ describe‚ identify‚ give examples of‚ interpret‚ explain‚ calculate‚ and draw types of questions. You should be able to know the terminology and concepts listed below. Introduction to Electronic Communication – Chapters 1–2‚ class notes ● Difference between: ○ Computer network Any telecommunication connection that allows computers to electronically exchange data
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