Digital Communications Overview, ASK, FSK. Prepared by: Keyur Desai Department of Electrical Engineering Michigan State University ECE458

Size: px
Start display at page:

Download "Digital Communications Overview, ASK, FSK. Prepared by: Keyur Desai Department of Electrical Engineering Michigan State University ECE458"

Transcription

1 Digital Communications Overview, ASK, FSK Prepared by: Keyur Desai Department of Electrical Engineering Michigan State University ECE458

2 Why Digital Communications? How do you place a call from Lansing to Fiji? Your call travels through too many telephone networks and towers, underwater cables, microwave links... If signal analog then once noise gets in its hard to get rid off. Why?

3 Why Digital Communications? Analog -->Sample-->Quantized --> Digitized All we have to make sure that the bits get through well. Its lot easier than trying to get a continuous time continous value waveform get through well. During the initial digitization process we take some hit in terms of quality, but unnoticable for most of the applications. Three biggest advantages of Digital 1. You can store easily 2. You can compress 3. You can add extra bits to protect the bit string from errors

4 Why Digital Communications? Here comes Shannon Shannon finds: based on the statistical property of a bit stream how much one can compress Shannon finds: based on the statistical property of the channel how many extra bits are needed to get the message across reliably

5 What is digital modulation Small part of the big set-up Imagine: on your bit stream all the compression and redundancy addition are done and now the bit stream is ready to be transmitted Compress Add redundancy Transmit Digital Modulation is all about getting this bit stream to the other point as safe and sound as possible. There will be errors: success of a digital modulation scheme in terms of probability of error and bandwidth efficiency Invent a scheme that minimizes the number of errors and then shannon redundancy will take care of the remaining errors Why sinusoids in digital modulation?

6 Why Digital Communications? How do we handle the binary messages Map to voltage levels Remember why modulation was needed 1. To make message suitable for transmission 2. To share the spectrum (use the same medium for multiple users) Does the message have DC level? Then message can be seen as DC + bipolar (+1, -1) An AM signal where the message is binary leveled

7 ASK What is the bandwidth of?

8 ASK Bandlimiting of ASK signal Demodulation is a two step process 1 Strip off the bandlimited digital message 2 Reconstruct the binary leveled message

9 ASK Generation

10 ASK Recovery ASK signal is similar to AM signal and what we use to recover an AM signal?

11 ASK Decision Convert envelope detector output to bipolar Use decision maker

12 What Graphs? ASK waveform and the message in time domain ASK waveform in the frequency domain Calculate the bandwidth of ASK signal Bandlimited ASK signal in time domain Recovered message and the message after decision maker in time domain Try adding noise and see how many errors.

13 FSK Frequency shift keying Keying suggest that message is of ON-OFF variety f1 for 0 and f2 for 1

14 FSK demodulation Visualize FSK as two ASKs

15 FSK generation Continuous phase FSK. Why?

16 FSK Demodulation Asynchronous. Two ASKs.

17 FSK What Graphs 1. Using VCO FSK signal and the message signal time domain FSK signal and the message signal frequency domain 2. Using Analog Switch FSK signal and the message signal time domain FSK signal and the message signal frequency domain Calculate bandwidth in both the cases Asyncrhonous demodulation 1. Recovered Mark and Space in time domain PLL demodulation 1. Message output from the PLL set up and the original message: time domain

18 What Questions to ask yourself? Is ASK similar to AM? How is power efficiency of ASK? How is bandwidth efficiency of ASK? What is the probability of error in ASK? Has FSK any advantages over ASK? Is FSK bandwidth efficient? Is FSK power efficient? Has FSK smaller probability of error over ASK? If yes, then why? What is the immidiate improvement over ASK? What do you know about BPSK?

EE 460L University of Nevada, Las Vegas ECE Department

EE 460L University of Nevada, Las Vegas ECE Department EE 460L PREPARATION 1- ASK Amplitude shift keying - ASK - in the context of digital communications is a modulation process which imparts to a sinusoid two or more discrete amplitude levels. These are related

More information

EE 400L Communications. Laboratory Exercise #7 Digital Modulation

EE 400L Communications. Laboratory Exercise #7 Digital Modulation EE 400L Communications Laboratory Exercise #7 Digital Modulation Department of Electrical and Computer Engineering University of Nevada, at Las Vegas PREPARATION 1- ASK Amplitude shift keying - ASK - in

More information

Universitas Sumatera Utara

Universitas Sumatera Utara Amplitude Shift Keying & Frequency Shift Keying Aim: To generate and demodulate an amplitude shift keyed (ASK) signal and a binary FSK signal. Intro to Generation of ASK Amplitude shift keying - ASK -

More information

Downloaded from 1

Downloaded from  1 VII SEMESTER FINAL EXAMINATION-2004 Attempt ALL questions. Q. [1] How does Digital communication System differ from Analog systems? Draw functional block diagram of DCS and explain the significance of

More information

Modulation is the process of impressing a low-frequency information signal (baseband signal) onto a higher frequency carrier signal

Modulation is the process of impressing a low-frequency information signal (baseband signal) onto a higher frequency carrier signal Modulation is the process of impressing a low-frequency information signal (baseband signal) onto a higher frequency carrier signal Modulation is a process of mixing a signal with a sinusoid to produce

More information

Principles of Communications ECS 332

Principles of Communications ECS 332 Principles of Communications ECS 332 Asst. Prof. Dr. Prapun Suksompong prapun@siit.tu.ac.th 5. Angle Modulation Office Hours: BKD, 6th floor of Sirindhralai building Wednesday 4:3-5:3 Friday 4:3-5:3 Example

More information

Department of Electronics & Communication Engineering LAB MANUAL SUBJECT: DIGITAL COMMUNICATION LABORATORY [ECE324] (Branch: ECE)

Department of Electronics & Communication Engineering LAB MANUAL SUBJECT: DIGITAL COMMUNICATION LABORATORY [ECE324] (Branch: ECE) Department of Electronics & Communication Engineering LAB MANUAL SUBJECT: DIGITAL COMMUNICATION LABORATORY [ECE324] B.Tech Year 3 rd, Semester - 5 th (Branch: ECE) Version: 01 st August 2018 The LNM Institute

More information

Chapter-1: Introduction

Chapter-1: Introduction Chapter-1: Introduction The purpose of a Communication System is to transport an information bearing signal from a source to a user destination via a communication channel. MODEL OF A COMMUNICATION SYSTEM

More information

UNIT TEST I Digital Communication

UNIT TEST I Digital Communication Time: 1 Hour Class: T.E. I & II Max. Marks: 30 Q.1) (a) A compact disc (CD) records audio signals digitally by using PCM. Assume the audio signal B.W. to be 15 khz. (I) Find Nyquist rate. (II) If the Nyquist

More information

UNIT-1. Basic signal processing operations in digital communication

UNIT-1. Basic signal processing operations in digital communication UNIT-1 Lecture-1 Basic signal processing operations in digital communication The three basic elements of every communication systems are Transmitter, Receiver and Channel. The Overall purpose of this system

More information

German Jordanian University Department of Communication Engineering Digital Communication Systems Lab. CME 313-Lab

German Jordanian University Department of Communication Engineering Digital Communication Systems Lab. CME 313-Lab German Jordanian University Department of Communication Engineering Digital Communication Systems Lab CME 313-Lab Experiment 7 Binary Frequency-shift keying (BPSK) Eng. Anas Al-ashqar Dr. Ala' Khalifeh

More information

German Jordanian University. Department of Communication Engineering. Digital Communication Systems Lab. CME 313-Lab. Experiment 8

German Jordanian University. Department of Communication Engineering. Digital Communication Systems Lab. CME 313-Lab. Experiment 8 German Jordanian University Department of Communication Engineering Digital Communication Systems Lab CME 313-Lab Experiment 8 Binary Frequency-shift keying (BPSK) Eng. Anas Al-ashqar Dr. Ala' Khalifeh

More information

Fundamentals of Digital Communication

Fundamentals of Digital Communication Fundamentals of Digital Communication Network Infrastructures A.A. 2017/18 Digital communication system Analog Digital Input Signal Analog/ Digital Low Pass Filter Sampler Quantizer Source Encoder Channel

More information

I-Q transmission. Lecture 17

I-Q transmission. Lecture 17 I-Q Transmission Lecture 7 I-Q transmission i Sending Digital Data Binary Phase Shift Keying (BPSK): sending binary data over a single frequency band Quadrature Phase Shift Keying (QPSK): sending twice

More information

Lecture 3: Modulation & Clock Recovery. CSE 123: Computer Networks Stefan Savage

Lecture 3: Modulation & Clock Recovery. CSE 123: Computer Networks Stefan Savage Lecture 3: Modulation & Clock Recovery CSE 123: Computer Networks Stefan Savage Lecture 3 Overview Signaling constraints Shannon s Law Nyquist Limit Encoding schemes Clock recovery Manchester, NRZ, NRZI,

More information

Pulse Code Modulation

Pulse Code Modulation Pulse Code Modulation Modulation is the process of varying one or more parameters of a carrier signal in accordance with the instantaneous values of the message signal. The message signal is the signal

More information

CHETTINAD COLLEGE OF ENGINEERING & TECHNOLOGY NH-67, TRICHY MAIN ROAD, PULIYUR, C.F , KARUR DT.

CHETTINAD COLLEGE OF ENGINEERING & TECHNOLOGY NH-67, TRICHY MAIN ROAD, PULIYUR, C.F , KARUR DT. CHETTINAD COLLEGE OF ENGINEERING & TECHNOLOGY NH-67, TRICHY MAIN ROAD, PULIYUR, C.F. 639 114, KARUR DT. DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING COURSE MATERIAL Subject Name: Analog & Digital

More information

ECE5713 : Advanced Digital Communications

ECE5713 : Advanced Digital Communications ECE5713 : Advanced Digital Communications Bandpass Modulation MPSK MASK, OOK MFSK 04-May-15 Advanced Digital Communications, Spring-2015, Week-8 1 In-phase and Quadrature (I&Q) Representation Any bandpass

More information

Carrier Phase Recovery. EE3723 : Digital Communications. Synchronization. Carrier Phase Recovery. Carrier Phase Synchronization Techniques.

Carrier Phase Recovery. EE3723 : Digital Communications. Synchronization. Carrier Phase Recovery. Carrier Phase Synchronization Techniques. EE3723 : Digital Communications Carrier Phase Recovery Week 10: Synchronization (Frequency, Phase, Symbol and Frame Synchronization) Carrier and Phase Recovery Phase-Locked Loop 20-May-15 Muhammad Ali

More information

Lecture 10. Digital Modulation

Lecture 10. Digital Modulation Digital Modulation Lecture 10 On-Off keying (OOK), or amplitude shift keying (ASK) Phase shift keying (PSK), particularly binary PSK (BPSK) Frequency shift keying Typical spectra Modulation/demodulation

More information

EXPERIMENT 1: Amplitude Shift Keying (ASK)

EXPERIMENT 1: Amplitude Shift Keying (ASK) EXPERIMENT 1: Amplitude Shift Keying (ASK) 1) OBJECTIVE Generation and demodulation of an amplitude shift keyed (ASK) signal 2) PRELIMINARY DISCUSSION In ASK, the amplitude of a carrier signal is modified

More information

Department of Electronic and Information Engineering. Communication Laboratory

Department of Electronic and Information Engineering. Communication Laboratory Department of Electronic and Information Engineering Communication Laboratory Frequency Shift Keying (FSK) & Differential Phase Shift Keying (DPSK) & Differential Quadrature Phase Shift Keying (DQPSK)

More information

Design of a Digital Transmission System Using ASAK for the Transmission and Reception of Text Messages Using LABVIEW

Design of a Digital Transmission System Using ASAK for the Transmission and Reception of Text Messages Using LABVIEW Design of a Digital Transmission System Using ASAK for the Transmission and Reception of Text Messages Using LABVIEW K. Ravi Babu 1, M.Srinivas 2 1 Asst. Prof, Dept of ECE, PBR VITS 2 Asst. Prof, Dept

More information

COSC 3213: Computer Networks I: Chapter 3 Handout #4. Instructor: Dr. Marvin Mandelbaum Department of Computer Science York University Section A

COSC 3213: Computer Networks I: Chapter 3 Handout #4. Instructor: Dr. Marvin Mandelbaum Department of Computer Science York University Section A COSC 3213: Computer Networks I: Chapter 3 Handout #4 Instructor: Dr. Marvin Mandelbaum Department of Computer Science York University Section A Topics: 1. Line Coding: Unipolar, Polar,and Inverted ; Bipolar;

More information

CSE 123: Computer Networks Alex C. Snoeren. Project 1 out Today, due 10/26!

CSE 123: Computer Networks Alex C. Snoeren. Project 1 out Today, due 10/26! CSE 123: Computer Networks Alex C. Snoeren Project 1 out Today, due 10/26! Signaling Types of physical media Shannon s Law and Nyquist Limit Encoding schemes Clock recovery Manchester, NRZ, NRZI, etc.

More information

Problem Sheet 1 Probability, random processes, and noise

Problem Sheet 1 Probability, random processes, and noise Problem Sheet 1 Probability, random processes, and noise 1. If F X (x) is the distribution function of a random variable X and x 1 x 2, show that F X (x 1 ) F X (x 2 ). 2. Use the definition of the cumulative

More information

Chapter-15. Communication systems -1 mark Questions

Chapter-15. Communication systems -1 mark Questions Chapter-15 Communication systems -1 mark Questions 1) What are the three main units of a Communication System? 2) What is meant by Bandwidth of transmission? 3) What is a transducer? Give an example. 4)

More information

Experiment 02: Amplitude Modulation

Experiment 02: Amplitude Modulation ECE316, Experiment 02, 2017 Communications Lab, University of Toronto Experiment 02: Amplitude Modulation Bruno Korst - bkf@comm.utoronto.ca Abstract In this second laboratory experiment, you will see

More information

CHAPTER 2 DIGITAL MODULATION

CHAPTER 2 DIGITAL MODULATION 2.1 INTRODUCTION CHAPTER 2 DIGITAL MODULATION Referring to Equation (2.1), if the information signal is digital and the amplitude (lv of the carrier is varied proportional to the information signal, a

More information

Digital Communication

Digital Communication Digital Communication Laboratories bako@ieee.org DigiCom Labs There are 5 labs related to the digital communication. Study of the parameters of metal cables including: characteristic impendance, attenuation

More information

ELEC3242 Communications Engineering Laboratory Frequency Shift Keying (FSK)

ELEC3242 Communications Engineering Laboratory Frequency Shift Keying (FSK) ELEC3242 Communications Engineering Laboratory 1 ---- Frequency Shift Keying (FSK) 1) Frequency Shift Keying Objectives To appreciate the principle of frequency shift keying and its relationship to analogue

More information

Chapter 4 Digital Transmission 4.1

Chapter 4 Digital Transmission 4.1 Chapter 4 Digital Transmission 4.1 Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display. 4-1 DIGITAL-TO-DIGITAL CONVERSION In this section, we see how we can represent

More information

2. TELECOMMUNICATIONS BASICS

2. TELECOMMUNICATIONS BASICS 2. TELECOMMUNICATIONS BASICS The purpose of any telecommunications system is to transfer information from the sender to the receiver by a means of a communication channel. The information is carried by

More information

EXPERIMENT NO. 3 FSK Modulation

EXPERIMENT NO. 3 FSK Modulation DEPARTMENT OF ELECTRICAL & COMPUTER ENGINEERING ECE 4203: COMMUNICATIONS ENGINEERING LAB II SEMESTER 2, 2017/2018 EXPERIMENT NO. 3 FSK Modulation NAME: MATRIC NO: DATE: SECTION: FSK MODULATION Objective

More information

UNIT 2 DIGITAL COMMUNICATION DIGITAL COMMUNICATION-Introduction The techniques used to modulate digital information so that it can be transmitted via microwave, satellite or down a cable pair is different

More information

TSEK02: Radio Electronics Lecture 2: Modulation (I) Ted Johansson, EKS, ISY

TSEK02: Radio Electronics Lecture 2: Modulation (I) Ted Johansson, EKS, ISY TSEK02: Radio Electronics Lecture 2: Modulation (I) Ted Johansson, EKS, ISY An Overview of Modulation Techniques: chapter 3.1 3.3.1 2 Introduction (3.1) Analog Modulation Amplitude Modulation Phase and

More information

Digital to Digital Encoding

Digital to Digital Encoding MODULATION AND ENCODING Data must be transformed into signals to send them from one place to another Conversion Schemes Digital-to-Digital Analog-to-Digital Digital-to-Analog Analog-to-Analog Digital to

More information

Modulation and Coding labolatory. Digital Modulation. Frequency Shift Keying (FSK)

Modulation and Coding labolatory. Digital Modulation. Frequency Shift Keying (FSK) Modulation and Coding labolatory Digital Modulation Frequency Shift Keying (FSK) The aim of the exercise is to develop algorithms for modulation and decoding for the two types of digital modulation: Frequency

More information

Pulse Code Modulation (PCM)

Pulse Code Modulation (PCM) Pulse Code Modulation (PCM) PCM in the Bell System Multiplexing PCM Asynchronous PCM Extensions to PCM Differential PCM (DPCM) Adaptive DPCM (ADPCM) Delta-Sigma Modulation (DM) Vocoders PCM in the Bell

More information

Digital Modulation Lecture 01. Review of Analogue Modulation Introduction to Digital Modulation Techniques Richard Harris

Digital Modulation Lecture 01. Review of Analogue Modulation Introduction to Digital Modulation Techniques Richard Harris Digital Modulation Lecture 01 Review of Analogue Modulation Introduction to Digital Modulation Techniques Richard Harris Objectives You will be able to: Classify the various approaches to Analogue Modulation

More information

Digital modulation techniques

Digital modulation techniques Outline Introduction Signal, random variable, random process and spectra Analog modulation Analog to digital conversion Digital transmission through baseband channels Signal space representation Optimal

More information

Objectives. Presentation Outline. Digital Modulation Lecture 01

Objectives. Presentation Outline. Digital Modulation Lecture 01 Digital Modulation Lecture 01 Review of Analogue Modulation Introduction to Digital Modulation Techniques Richard Harris Objectives You will be able to: Classify the various approaches to Analogue Modulation

More information

Chapter 4. Part 2(a) Digital Modulation Techniques

Chapter 4. Part 2(a) Digital Modulation Techniques Chapter 4 Part 2(a) Digital Modulation Techniques Overview Digital Modulation techniques Bandpass data transmission Amplitude Shift Keying (ASK) Phase Shift Keying (PSK) Frequency Shift Keying (FSK) Quadrature

More information

TSEK02: Radio Electronics Lecture 2: Modulation (I) Ted Johansson, EKS, ISY

TSEK02: Radio Electronics Lecture 2: Modulation (I) Ted Johansson, EKS, ISY TSEK02: Radio Electronics Lecture 2: Modulation (I) Ted Johansson, EKS, ISY 2 Basic Definitions Time and Frequency db conversion Power and dbm Filter Basics 3 Filter Filter is a component with frequency

More information

The Sampling Theorem:

The Sampling Theorem: The Sampling Theorem: Aim: Experimental verification of the sampling theorem; sampling and message reconstruction (interpolation). Experimental Procedure: Taking Samples: In the first part of the experiment

More information

Lecture 3: Modulation & Clock Recovery. CSE 123: Computer Networks Alex C. Snoeren

Lecture 3: Modulation & Clock Recovery. CSE 123: Computer Networks Alex C. Snoeren Lecture 3: Modulation & Clock Recovery CSE 123: Computer Networks Alex C. Snoeren Lecture 3 Overview Signaling constraints Shannon s Law Nyquist Limit Encoding schemes Clock recovery Manchester, NRZ, NRZI,

More information

SEN366 Computer Networks

SEN366 Computer Networks SEN366 Computer Networks Prof. Dr. Hasan Hüseyin BALIK (5 th Week) 5. Signal Encoding Techniques 5.Outline An overview of the basic methods of encoding digital data into a digital signal An overview of

More information

QUESTION BANK SUBJECT: DIGITAL COMMUNICATION (15EC61)

QUESTION BANK SUBJECT: DIGITAL COMMUNICATION (15EC61) QUESTION BANK SUBJECT: DIGITAL COMMUNICATION (15EC61) Module 1 1. Explain Digital communication system with a neat block diagram. 2. What are the differences between digital and analog communication systems?

More information

EE3723 : Digital Communications

EE3723 : Digital Communications EE3723 : Digital Communications Week 8-9: Bandpass Modulation MPSK MASK, OOK MFSK 04-May-15 Muhammad Ali Jinnah University, Islamabad - Digital Communications - EE3723 1 In-phase and Quadrature (I&Q) Representation

More information

EXPERIMENT WISE VIVA QUESTIONS

EXPERIMENT WISE VIVA QUESTIONS EXPERIMENT WISE VIVA QUESTIONS Pulse Code Modulation: 1. Draw the block diagram of basic digital communication system. How it is different from analog communication system. 2. What are the advantages of

More information

EEE 309 Communication Theory

EEE 309 Communication Theory EEE 309 Communication Theory Semester: January 2017 Dr. Md. Farhad Hossain Associate Professor Department of EEE, BUET Email: mfarhadhossain@eee.buet.ac.bd Office: ECE 331, ECE Building Types of Modulation

More information

Solution for Elec Circuits and Communication Fundamentals

Solution for Elec Circuits and Communication Fundamentals Solution for Elec Circuits and Communication Fundamentals May 2016 INDEX Q1 a 2-3 b 4 c. 4-6 d 7 Q2- a 8 b 9-10 Q3 a 11 b 12 c) N.A d N.A Q4- a 13-15 B 16 Q5 a 17-20 b 20-21 Q6- a N.A b 22-23 c. 24-25

More information

Lecture 2: Links and Signaling. CSE 123: Computer Networks Stefan Savage

Lecture 2: Links and Signaling. CSE 123: Computer Networks Stefan Savage Lecture 2: Links and Signaling CSE 123: Computer Networks Stefan Savage Lecture 2 Overview Signaling Channel characteristics Types of physical media Modulation Narrowband vs. Broadband Encoding schemes

More information

Amplitude Frequency Phase

Amplitude Frequency Phase Chapter 4 (part 2) Digital Modulation Techniques Chapter 4 (part 2) Overview Digital Modulation techniques (part 2) Bandpass data transmission Amplitude Shift Keying (ASK) Phase Shift Keying (PSK) Frequency

More information

Communication Networks

Communication Networks Communication Networks Chapter 4 Transmission Technique Communication Networks: 4. Transmission Technique 133 Overview 1. Basic Model of a Transmission System 2. Signal Classes 3. Physical Medium 4. Coding

More information

Communication Systems Lab

Communication Systems Lab LAB MANUAL Communication Systems Lab (EE-226-F) Prepared by: Varun Sharma (Lab In-charge) Dayal C. Sati (Faculty In-charge) B R C M CET BAHAL DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING Page

More information

Data Communication (CS601)

Data Communication (CS601) Data Communication (CS601) MOST LATEST (2012) PAPERS For MID Term (ZUBAIR AKBAR KHAN) Page 1 Q. Suppose a famous Telecomm company AT&T is using AMI encoding standard for its digital telephone services,

More information

Emona Telecoms-Trainer ETT-101

Emona Telecoms-Trainer ETT-101 EXPERIMENTS IN MODERN COMMUNICATIONS Emona Telecoms-Trainer ETT-101 Multi-Experiment Single Board Telecommunications Trainer for Technical College and Technical High School Students EMONA INSTRUMENTS www.ett101.com

More information

EXPERIMENT NO. 4 PSK Modulation

EXPERIMENT NO. 4 PSK Modulation DEPARTMENT OF ELECTRICAL & COMPUTER ENGINEERING ECOM 4101 (ECE 4203) COMMUNICATIONS ENGINEERING LAB II SEMESTER 2, 2016/2017 EXPERIMENT NO. 4 PSK Modulation NAME: MATRIC NO: DATE: SECTION: PSK MODULATION

More information

SIGNALS AND SYSTEMS LABORATORY 13: Digital Communication

SIGNALS AND SYSTEMS LABORATORY 13: Digital Communication SIGNALS AND SYSTEMS LABORATORY 13: Digital Communication INTRODUCTION Digital Communication refers to the transmission of binary, or digital, information over analog channels. In this laboratory you will

More information

Wireless Communication Fading Modulation

Wireless Communication Fading Modulation EC744 Wireless Communication Fall 2008 Mohamed Essam Khedr Department of Electronics and Communications Wireless Communication Fading Modulation Syllabus Tentatively Week 1 Week 2 Week 3 Week 4 Week 5

More information

Exercise 2: FM Detection With a PLL

Exercise 2: FM Detection With a PLL Phase-Locked Loop Analog Communications Exercise 2: FM Detection With a PLL EXERCISE OBJECTIVE When you have completed this exercise, you will be able to explain how the phase detector s input frequencies

More information

Principles of Communications

Principles of Communications 1 Principles of Communications Lin DAI 2 Lecture 1. Overview of Communication Systems Block Diagram of Communication Systems Noise and Distortion 3 SOURCE Source Info. Transmitter Transmitted signal Received

More information

Basic Concepts in Data Transmission

Basic Concepts in Data Transmission Basic Concepts in Data Transmission EE450: Introduction to Computer Networks Professor A. Zahid A.Zahid-EE450 1 Data and Signals Data is an entity that convey information Analog Continuous values within

More information

Chapter 3: Analog Modulation Cengage Learning Engineering. All Rights Reserved.

Chapter 3: Analog Modulation Cengage Learning Engineering. All Rights Reserved. Contemporary Communication Systems using MATLAB Chapter 3: Analog Modulation 2013 Cengage Learning Engineering. All Rights Reserved. 3.1 Preview In this chapter we study analog modulation & demodulation,

More information

EEE 309 Communication Theory

EEE 309 Communication Theory EEE 309 Communication Theory Semester: January 2016 Dr. Md. Farhad Hossain Associate Professor Department of EEE, BUET Email: mfarhadhossain@eee.buet.ac.bd Office: ECE 331, ECE Building Part 05 Pulse Code

More information

2011 PSW American Society for Engineering Education Conference

2011 PSW American Society for Engineering Education Conference Communications Laboratory with Commercial Test and Training Instrument Peter Kinman and Daniel Murdock California State University Fresno Abstract A communications laboratory course has been designed around

More information

Ș.l. dr. ing. Lucian-Florentin Bărbulescu

Ș.l. dr. ing. Lucian-Florentin Bărbulescu Ș.l. dr. ing. Lucian-Florentin Bărbulescu 1 Data: entities that convey meaning within a computer system Signals: are the electric or electromagnetic impulses used to encode and transmit data Characteristics

More information

C06a: Digital Modulation

C06a: Digital Modulation CISC 7332X T6 C06a: Digital Modulation Hui Chen Department of Computer & Information Science CUNY Brooklyn College 10/2/2018 CUNY Brooklyn College 1 Outline Digital modulation Baseband transmission Line

More information

Lecture #2. EE 471C / EE 381K-17 Wireless Communication Lab. Professor Robert W. Heath Jr.

Lecture #2. EE 471C / EE 381K-17 Wireless Communication Lab. Professor Robert W. Heath Jr. Lecture #2 EE 471C / EE 381K-17 Wireless Communication Lab Professor Robert W. Heath Jr. Preview of today s lecture u Introduction to digital communication u Components of a digital communication system

More information

Course Code: EE-411 Teacher: Engr.Ahmad Bilal Multiple choice & Short Questions notes

Course Code: EE-411 Teacher: Engr.Ahmad Bilal Multiple choice & Short Questions notes Department of Electrical (POWER) Engineering Swedish College of Engineering & Technology Rahim yar khan Subject: Communication systems Course Code: EE-411 Teacher: Engr.Ahmad Bilal Multiple choice & Short

More information

EXPERIMENT 2: Frequency Shift Keying (FSK)

EXPERIMENT 2: Frequency Shift Keying (FSK) EXPERIMENT 2: Frequency Shift Keying (FSK) 1) OBJECTIVE Generation and demodulation of a frequency shift keyed (FSK) signal 2) PRELIMINARY DISCUSSION In FSK, the frequency of a carrier signal is modified

More information

Department of Electronic and Information Engineering. Communication Laboratory. Phase Shift Keying (PSK) & Quadrature Phase Shift Keying (QPSK)

Department of Electronic and Information Engineering. Communication Laboratory. Phase Shift Keying (PSK) & Quadrature Phase Shift Keying (QPSK) Department of Electronic and Information Engineering Communication Laboratory Phase Shift Keying (PSK) & Quadrature Phase Shift Keying (QPSK) Objectives To familiar with the concept of describing phase

More information

DIGITAL COMMUNICATION

DIGITAL COMMUNICATION DIGITAL COMMUNICATION TRAINING LAB Digital communication has emerged to augment or replace the conventional analog systems, which had been used widely a few decades back. Digital communication has demonstrated

More information

UNIT I Source Coding Systems

UNIT I Source Coding Systems SIDDHARTH GROUP OF INSTITUTIONS: PUTTUR Siddharth Nagar, Narayanavanam Road 517583 QUESTION BANK (DESCRIPTIVE) Subject with Code: DC (16EC421) Year & Sem: III-B. Tech & II-Sem Course & Branch: B. Tech

More information

MAS160: Signals, Systems & Information for Media Technology. Problem Set 4. DUE: October 20, 2003

MAS160: Signals, Systems & Information for Media Technology. Problem Set 4. DUE: October 20, 2003 MAS160: Signals, Systems & Information for Media Technology Problem Set 4 DUE: October 20, 2003 Instructors: V. Michael Bove, Jr. and Rosalind Picard T.A. Jim McBride Problem 1: Simple Psychoacoustic Masking

More information

Digital Transceiver using H-Ternary Line Coding Technique

Digital Transceiver using H-Ternary Line Coding Technique Digital Transceiver using H-Ternary Line Coding Technique Abstract In this paper Digital Transceiver using Hybrid Ternary Technique gives the details about digital transmitter and receiver with the design

More information

B.E./B.Tech. DEGREE EXAMINATION, NOVEMBER/DECEMBER Third Semester Computer Science and Engineering CS 2204 ANALOG AND DIGITAL COMMUNICATION

B.E./B.Tech. DEGREE EXAMINATION, NOVEMBER/DECEMBER Third Semester Computer Science and Engineering CS 2204 ANALOG AND DIGITAL COMMUNICATION B.E./B.Tech. DEGREE EXAMINATION, NOVEMBER/DECEMBER 2011. Third Semester Computer Science and Engineering CS 2204 ANALOG AND DIGITAL COMMUNICATION Time : Three hours Maximum : 100 marks Answer ALL questions.

More information

Class 4 ((Communication and Computer Networks))

Class 4 ((Communication and Computer Networks)) Class 4 ((Communication and Computer Networks)) Lesson 5... SIGNAL ENCODING TECHNIQUES Abstract Both analog and digital information can be encoded as either analog or digital signals. The particular encoding

More information

V. CHANDRA SEKAR Professor and Head Department of Electronics and Communication Engineering SASTRA University, Kumbakonam

V. CHANDRA SEKAR Professor and Head Department of Electronics and Communication Engineering SASTRA University, Kumbakonam V. CHANDRA SEKAR Professor and Head Department of Electronics and Communication Engineering SASTRA University, Kumbakonam 1 Contents Preface v 1. Introduction 1 1.1 What is Communication? 1 1.2 Modulation

More information

Chapter 1 INTRODUCTION TO SOURCE CODING AND CHANNEL CODING. Whether a source is analog or digital, a digital communication

Chapter 1 INTRODUCTION TO SOURCE CODING AND CHANNEL CODING. Whether a source is analog or digital, a digital communication 1 Chapter 1 INTRODUCTION TO SOURCE CODING AND CHANNEL CODING 1.1 SOURCE CODING Whether a source is analog or digital, a digital communication system is designed to transmit information in digital form.

More information

BINARY AMPLITUDE SHIFT KEYING

BINARY AMPLITUDE SHIFT KEYING BINARY AMPLITUDE SHIFT KEYING AIM: To set up a circuit to generate Binary Amplitude Shift keying and to plot the output waveforms. COMPONENTS AND EQUIPMENTS REQUIRED: IC CD4016, IC 7474, Resistors, Zener

More information

PULSE CODE MODULATION (PCM)

PULSE CODE MODULATION (PCM) PULSE CODE MODULATION (PCM) 1. PCM quantization Techniques 2. PCM Transmission Bandwidth 3. PCM Coding Techniques 4. PCM Integrated Circuits 5. Advantages of PCM 6. Delta Modulation 7. Adaptive Delta Modulation

More information

Annex. 1.3 Measuring information

Annex. 1.3 Measuring information Annex This appendix discusses the interrelated concepts of information, information source, channel capacity, and bandwidth. The first three concepts relate to a digital channel, while bandwidth concerns

More information

Synchronization. EE442 Lecture 17. All digital receivers must be synchronized to the incoming signal s(t).

Synchronization. EE442 Lecture 17. All digital receivers must be synchronized to the incoming signal s(t). Synchronization EE442 Lecture 17 All digital receivers must be synchronized to the incoming signal s(t). This means we must have a way to perform (1) Bit or symbol synchronization (2) Frame synchronization

More information

Lecture Schedule: Week Date Lecture Title

Lecture Schedule: Week Date Lecture Title http://elec3004.org Sampling & More 2014 School of Information Technology and Electrical Engineering at The University of Queensland Lecture Schedule: Week Date Lecture Title 1 2-Mar Introduction 3-Mar

More information

Innovative Communications Experiments Using an Integrated Design Laboratory

Innovative Communications Experiments Using an Integrated Design Laboratory Innovative Communications Experiments Using an Integrated Design Laboratory Frank K. Tuffner, John W. Pierre, Robert F. Kubichek University of Wyoming Abstract In traditional undergraduate teaching laboratory

More information

ENGR 4323/5323 Digital and Analog Communication

ENGR 4323/5323 Digital and Analog Communication ENGR 4323/5323 Digital and Analog Communication Chapter 1 Introduction Engineering and Physics University of Central Oklahoma Dr. Mohamed Bingabr Course Materials Textbook: Modern Digital and Analog Communication,

More information

BSc (Hons) Computer Science with Network Security, BEng (Hons) Electronic Engineering. Cohorts: BCNS/17A/FT & BEE/16B/FT

BSc (Hons) Computer Science with Network Security, BEng (Hons) Electronic Engineering. Cohorts: BCNS/17A/FT & BEE/16B/FT BSc (Hons) Computer Science with Network Security, BEng (Hons) Electronic Engineering Cohorts: BCNS/17A/FT & BEE/16B/FT Examinations for 2016-2017 Semester 2 & 2017 Semester 1 Resit Examinations for BEE/12/FT

More information

University of Swaziland Faculty of Science Department of Electrical and Electronic Engineering Main Examination 2016

University of Swaziland Faculty of Science Department of Electrical and Electronic Engineering Main Examination 2016 University of Swaziland Faculty of Science Department of Electrical and Electronic Engineering Main Examination 2016 Title of Paper Course Number Time Allowed Instructions Digital Communication Systems

More information

UNIT-2 Angle Modulation System

UNIT-2 Angle Modulation System UNIT-2 Angle Modulation System Introduction There are three parameters of a carrier that may carry information: Amplitude Frequency Phase Frequency Modulation Power in an FM signal does not vary with modulation

More information

Signal Encoding Techniques

Signal Encoding Techniques 2 Techniques ITS323: to Data Communications CSS331: Fundamentals of Data Communications Sirindhorn International Institute of Technology Thammasat University Prepared by Steven Gordon on 3 August 2015

More information

COMPUTER COMMUNICATION AND NETWORKS ENCODING TECHNIQUES

COMPUTER COMMUNICATION AND NETWORKS ENCODING TECHNIQUES COMPUTER COMMUNICATION AND NETWORKS ENCODING TECHNIQUES Encoding Coding is the process of embedding clocks into a given data stream and producing a signal that can be transmitted over a selected medium.

More information

EITF25 Internet Techniques and Applications L2: Physical layer. Stefan Höst

EITF25 Internet Techniques and Applications L2: Physical layer. Stefan Höst EITF25 Internet Techniques and Applications L2: Physical layer Stefan Höst Data vs signal Data: Static representation of information For storage Signal: Dynamic representation of information For transmission

More information

Waveform Encoding - PCM. BY: Dr.AHMED ALKHAYYAT. Chapter Two

Waveform Encoding - PCM. BY: Dr.AHMED ALKHAYYAT. Chapter Two Chapter Two Layout: 1. Introduction. 2. Pulse Code Modulation (PCM). 3. Differential Pulse Code Modulation (DPCM). 4. Delta modulation. 5. Adaptive delta modulation. 6. Sigma Delta Modulation (SDM). 7.

More information

Recap of Last 2 Classes

Recap of Last 2 Classes Recap of Last 2 Classes Transmission Media Analog versus Digital Signals Bandwidth Considerations Attentuation, Delay Distortion and Noise Nyquist and Shannon Analog Modulation Digital Modulation What

More information

FDM- FREQUENCY DIVISION MULTIPLEXING

FDM- FREQUENCY DIVISION MULTIPLEXING FDM- FREQUENCY DIVISION MULTIPLEXING Multiplexing to refer to the combination of information streams from multiple sources for transmission over a shared medium Demultiplexing to refer to the separation

More information

CHETTINAD COLLEGE OF ENGINEERING & TECHNOLOGY NH-67, TRICHY MAIN ROAD, PULIYUR, C.F , KARUR DT.

CHETTINAD COLLEGE OF ENGINEERING & TECHNOLOGY NH-67, TRICHY MAIN ROAD, PULIYUR, C.F , KARUR DT. CHETTINAD COLLEGE OF ENGINEERING & TECHNOLOGY NH-67, TRICHY MAIN ROAD, PULIYUR, C.F. 639 114, KARUR DT. DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING COURSE MATERIAL Subject Name: Digital Communication

More information

Narrowband Data Transmission ASK/FSK

Narrowband Data Transmission ASK/FSK Objectives Communication Systems II - Laboratory Experiment 9 Narrowband Data Transmission ASK/FSK To generate amplitude-shift keyed (ASK) and frequency-shift keyed (FSK) signals, study their properties,

More information

Lab10: FM Spectra and VCO

Lab10: FM Spectra and VCO Lab10: FM Spectra and VCO Prepared by: Keyur Desai Dept. of Electrical Engineering Michigan State University ECE458 Lab 10 What is FM? A type of analog modulation Remember a common strategy in analog modulation?

More information