# Physical Layer. Dr. Sanjay P. Ahuja, Ph.D. Fidelity National Financial Distinguished Professor of CIS. School of Computing, UNF

Size: px
Start display at page:

Download "Physical Layer. Dr. Sanjay P. Ahuja, Ph.D. Fidelity National Financial Distinguished Professor of CIS. School of Computing, UNF"

Transcription

1 Physical Layer Dr. Sanjay P. Ahuja, Ph.D. Fidelity National Financial Distinguished Professor of CIS School of Computing, UNF

2 Multiplexing Transmission channels are expensive. It is often that two communicating entities do not fully utilize the full capacity of a channel. For efficiency, the capacity is shared. This is called multiplexing. There are n inputs to a multiplexer. The multiplexer is connected by a single data link to a de-multiplexer. The link is able to carry n separate channels of data. The mux combines data from n input lines and transmits over a higher capacity data link. The demux accepts the multiplexed data stream and separates the data according to channel and delivers them to the appropriate output lines.

3 Multiplexing Transmission channels are expensive. It is often that two communicating entities do not fully utilize the full capacity of a channel. For efficiency, the capacity is shared. This is called multiplexing. There are three types of multiplexing: Frequency Division Multiplexing (FDM) Time Division Multiplexing (TDM) Wavelength Division Multiplexing (WDM)

4 Frequency Division Multiplexing (FDM) The frequency spectrum (bandwidth) is divided among the logical channels, single frequency bands are allocated to different users. E.g., in radio broadcasting different frequencies are allocated to different radio stations. FDM is used with analog signals. When 3000 Hz wide voice-grade telephone channels are multiplexed using FDM, 4000 Hz is allocated to each channel to keep them well separated (known as a guard band).

5 Time Division Multiplexing (TDM) In time division multiplexing, several connections share the high bandwidth of a channel. Here multiple signals (digital) are carried on a single channel by interleaving portions of each signal in time. TDM is a digital multiplexing technique and is used for digital data only.

6 The T1 Carrier (Example of TDM) The T1 carrier consists of 24 voice channels muxed together. On the transmitting end of a T1, a codec (coder-decoder) samples the analog amplitude of Hz voice lines each at 8000 samples per second, or 125 µsecond/sample for each of the 24 channels (see Nyquist theorem below). Each of the 24 channels gets to insert 8-bits into the output stream, 7-bits for data and 1 bit for signaling. Nyquist Theorem: A signal of bandwidth W can be completely captured by taking 2W samples per second. For a 4 KHz voice signal, all information can be recovered by sampling at 8000 samples/second. Sampling faster isn't useful but sampling slower than the Nyquist limit means that some changes in the signal will be missed and data lost.

7 The T1 Carrier (Example of TDM) Conversion from Analog to Digital signal with sampling

8 The T1 Carrier (Example of TDM) Conversion from Analog to Digital signal with sampling (pulse code modulation)

9 The T1 Carrier Each T1 frame consists of 24 * 8 = 192 bits + 1 bit for framing = 193 bits/frame. There are 8000 frames generated per second (or 125 µsecond/frame). The gross data rate of T1 = 8000 frames/sec * 193 bits/frame = Mbps For transmitted digital data, the 24 th channel is used for synchronization and is considered as overhead.

10 TDM TDM allows multiple T1 carriers to be muxed into higher order carriers. 4 T1 channels muxed onto 1 T2 channel (6.312 Mbps). 7 T2 channels muxed onto 1 T3 channel ( Mbps). 6 T3 channels muxed onto 1 T4 channel ( Mbps). Multiplexing T1 streams into higher carriers.

11 Wavelength Division Multiplexing (WDM) WDM is used to carry many signals on one fiber.

12 Wavelength Division Multiplexing (WDM) 4 fibers come together at an optical combiner, each with its energy present at a different wavelength (λ). The 4 beams are combined onto a shared fiber. At the far end, the beam is split up over as many fibers as there were on the input side. Each output fiber contains a special filter that filters out all but one wavelength (λ). The resulting signal can be routed to their destination or recombined for additional muxed transport. Today we have WDM products that support 96 channels of 10 Gbps each for a total of 960 Gbps. When the number of channels is very large and the wavelengths are spaced closed together (0.1 nm 0.4 nm), the system is referred to as Dense WDM (DWDM).

13 Erbium Doped Fiber Amplifier (EDFA)

### Multiplexing. Chapter 8. Frequency Division Multiplexing Diagram. Frequency Division Multiplexing. Multiplexing

Multiplexing Chapter 8 Multiplexing Frequency Division Multiplexing FDM Useful bandwidth of medium exceeds required bandwidth of channel Each signal is modulated to a different carrier frequency Carrier

### Thursday, April 17, 2008, 6:28:40

Wavelength Division Multiplexing By: Gurudatha Pai K gurudatha@gmail.com Thursday, April 17, 2008, 6:28:40 Overview Introduction Popular Multiplexing Techniques Optical Networking WDM An Analogy of Multiplexing

### Bandwidth Utilization:

CHAPTER 6 Bandwidth Utilization: Solutions to Review Questions and Exercises Review Questions 1. Multiplexing is the set of techniques that allows the simultaneous transmission of multiple signals across

### *Most details of this presentation obtain from Behrouz A. Forouzan. Data Communications and Networking, 5 th edition textbook

*Most details of this presentation obtain from Behrouz A. Forouzan. Data Communications and Networking, 5 th edition textbook 1 Multiplexing Frequency-Division Multiplexing Time-Division Multiplexing Wavelength-Division

### Bandwidth utilization is the wise use of available bandwidth to achieve specific goals.

Note Bandwidth Utilization: Multiplexing and Spreading Bandwidth utilization is the wise use of available bandwidth to achieve specific goals. Efficiency can be achieved by multiplexing; i.e., sharing

### Multiplexing. Dr. Manas Khatua Assistant Professor Dept. of CSE IIT Jodhpur

CS311: DATA COMMUNICATION Multiplexing Dr. Manas Khatua Assistant Professor Dept. of CSE IIT Jodhpur e-mail: manaskhatua@iitj.ac.in Outline of the Lecture What is Multiplexing and why is it used? Basic

### P. 241 Figure 8.1 Multiplexing

CH 08 : MULTIPLEXING Multiplexing Multiplexing is multiple links on 1 physical line To make efficient use of high-speed telecommunications lines, some form of multiplexing is used It allows several transmission

### Data and Computer Communications. Tenth Edition by William Stallings

Data and Computer Communications Tenth Edition by William Stallings Data and Computer Communications, Tenth Edition by William Stallings, (c) Pearson Education, 2013 CHAPTER 8 Multiplexing It was impossible

### CS420/520 Axel Krings Page 1 Sequence 8

Chapter 8: Multiplexing CS420/520 Axel Krings Page 1 Multiplexing What is multiplexing? Frequency-Division Multiplexing Time-Division Multiplexing (Synchronous) Statistical Time-Division Multiplexing,

### Bandwidth Utilization:

CHAPTER 6 Bandwidth Utilization: In real life, we have links with limited bandwidths. The wise use of these bandwidths has been, and will be, one of the main challenges of electronic communications. However,

### Outline of the Lecture

CS311: DATA COMMUNICATION Multiplexing by Dr. Manas Khatua Assistant Professor Dept. of CSE IIT Jodhpur E-mail: manaskhatua@iitj.ac.in Web: http://home.iitj.ac.in/~manaskhatua http://manaskhatua.github.io/

### Data Communications and Networks

Data Communications and Networks Engr. Abdul Rahman Mahmood MS, MCP, QMR(ISO9001:2000) Usman Institute of Technology University Road, Karachi armahmood786@yahoo.com alphasecure@gmail.com alphapeeler.sf.net/pubkeys/pkey.htm

### MODULE IV. End Sem. Exam Marks. Syllabus

MODULE IV Syllabus Multiplexing- Space Division Multiplexing, Frequency Division Multiplexing, Wave length Division Multiplexing - Time Division multiplexing: Characteristics, Digital Carrier system, SONET/SDH,

### ET4254 Communications and Networking 1

Topic 5 Look at multiplexing multiple channels on a single link FDM TDM Statistical TDM ASDL and xdsl 1 Multiplexing multiple links on 1 physical line common on long-haul, high capacity, links have FDM,

### Chapter 6 Bandwidth Utilization: Multiplexing and Spreading 6.1

Chapter 6 Bandwidth Utilization: Multiplexing and Spreading 6.1 Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display. 3-6 PERFORMANCE One important issue in networking

### ITM 1010 Computer and Communication Technologies

ITM 1010 Computer and Communication Technologies Lecture #14 Part II Introduction to Communication Technologies: Digital Signals: Digital modulation, channel sharing 2003 香港中文大學, 電子工程學系 (Prof. H.K.Tsang)

### Chapter 6 Bandwidth Utilization: Multiplexing and Spreading 6.1

Chapter 6 Bandwidth Utilization: Multiplexing and Spreading 6.1 Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Note Bandwidth utilization is the wise use of

### Data and Computer Communications Chapter 8 Multiplexing

Data and Computer Communications Chapter 8 Multiplexing Eighth Edition by William Stallings 1 Multiplexing multiple links on 1 physical line common on long-haul, high capacity, links have FDM, TDM, STDM

### Data and Computer Communications. Tenth Edition by William Stallings

Data and Computer Communications Tenth Edition by William Stallings Data and Computer Communications, Tenth Edition by William Stallings, (c) Pearson Education - Prentice Hall, 2013 CHAPTER 8 Multiplexing

### 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

### Making Connections Efficient: Multiplexing and Compression

Fundamentals of Networking and Data Communications, Sixth Edition 5-1 Making Connections Efficient: Multiplexing and Compression Chapter 5 Learning Objectives After reading this chapter, students should

### Data Communications. Unguided Media Multiplexing

Data Communications Unguided Media Multiplexing Fiber-Optic Cable A fiber-optic cable is made of glass or plastic and transmits signals in the form of light. If a ray of light traveling through one substance

### INTRODUCTION TO COMMUNICATION SYSTEMS AND TRANSMISSION MEDIA

COMM.ENG INTRODUCTION TO COMMUNICATION SYSTEMS AND TRANSMISSION MEDIA 9/9/2017 LECTURES 1 Objectives To give a background on Communication system components and channels (media) A distinction between analogue

### Physical Layer. Networks: Physical Layer 1

Physical Layer Networks: Physical Layer 1 Physical Layer Part 1 Definitions Nyquist Theorem - noiseless Shannon s Result with noise Analog versus Digital Amplifier versus Repeater Networks: Physical Layer

### Bandwidth Utilization: Multiplexing and Spreading

CHAPTER 6 Bandwidth Utilization: Multiplexing and Spreading In real life, we have links with limited bandwidths. The wise use of these bandwidths has been, and will be, one of the main challenges of electronic

### 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

### TELECOMMUNICATION SYSTEMS

TELECOMMUNICATION SYSTEMS By Syed Bakhtawar Shah Abid Lecturer in Computer Science 1 MULTIPLEXING An efficient system maximizes the utilization of all resources. Bandwidth is one of the most precious resources

### Contents. Telecom Systems Chae Y. Lee. FDM Bell Systems s FDM Synchronous TDM T1, T3 Statistical TDM Multiple Access: FDMA, TDMA, CDMA

Multiplexing Contents FDM Bell Systems s FDM Synchronous TDM T1, T3 Statistical TDM Multiple Access: FDMA, TDMA, CDMA 2 Multiplexing/Demultiplexing Multiplexing is the process of combining two or more

### Wavelength Multiplexing. The Target

The Target Design a MAN* like fiber network for high data transmission rates. The network is partial below sea level and difficult to install and to maintain. Such a fiber network demands an optimized

### Computer Networks

15-441 Computer Networks Physical Layer Professor Hui Zhang hzhang@cs.cmu.edu 1 Communication & Physical Medium There were communications before computers There were communication networks before computer

### Computer Networks: Multiplexing

Computer Networks: Multiplexing EE1001 Prof. Taek M. Kwon Department of Electrical Engineering, UMD Outline EE 4321 Multiplexing EE 4321: Computer Networks EE Technical Elective Course, 3 credits Network

### Multiplexing Concepts and Introduction to BISDN. Professor Richard Harris

Multiplexing Concepts and Introduction to BISDN Professor Richard Harris Objectives Define what is meant by multiplexing and demultiplexing Identify the main types of multiplexing Space Division Time Division

### The Physical Layer Outline

The Physical Layer Outline Theoretical Basis for Data Communications Digital Modulation and Multiplexing Guided Transmission Media (copper and fiber) Public Switched Telephone Network and DSLbased Broadband

### 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

### (Refer Slide Time: 2:23)

Data Communications Prof. A. Pal Department of Computer Science & Engineering Indian Institute of Technology, Kharagpur Lecture-11B Multiplexing (Contd.) Hello and welcome to today s lecture on multiplexing

### SOME PHYSICAL LAYER ISSUES. Lecture Notes 2A

SOME PHYSICAL LAYER ISSUES Lecture Notes 2A Delays in networks Propagation time or propagation delay, t prop Time required for a signal or waveform to propagate (or move) from one point to another point.

### Chapter Four Multiplexing

Chapter Four Multiplexing Contents: Reference: Data Communication And Networking 4-1- FDM By: Behrouz A. Forouzan, Mc Graw Hill, 2007 4.2- TDM 4.3- SDTM 4.4- WDM To make efficient use of high speed telecommunications

### CSCD 433 Network Programming Fall Lecture 5 Physical Layer Continued

CSCD 433 Network Programming Fall 2016 Lecture 5 Physical Layer Continued 1 Topics Definitions Analog Transmission of Digital Data Digital Transmission of Analog Data Multiplexing 2 Different Types of

### CSCD 433 Network Programming Fall Lecture 5 Physical Layer Continued

CSCD 433 Network Programming Fall 2016 Lecture 5 Physical Layer Continued 1 Topics Definitions Analog Transmission of Digital Data Digital Transmission of Analog Data Multiplexing 2 Different Types of

### Module 19 : WDM Components

Module 19 : WDM Components Lecture : WDM Components - I Part - I Objectives In this lecture you will learn the following WDM Components Optical Couplers Optical Amplifiers Multiplexers (MUX) Insertion

### Lecture 5 Transmission. Physical and Datalink Layers: 3 Lectures

Lecture 5 Transmission Peter Steenkiste School of Computer Science Department of Electrical and Computer Engineering Carnegie Mellon University 15-441 Networking, Spring 2004 http://www.cs.cmu.edu/~prs/15-441

### ITS323: Introduction to Data Communications CSS331: Fundamentals of Data Communications

ITS323: Introduction to Data Communications CSS331: Fundamentals of Data Communications Sirindhorn International Institute of Technology Thammasat University Prepared by Steven Gordon on 13 October 2015

### Data Encoding g(p (part 2)

Data Encoding g(p (part 2) CSE 3213 Instructor: U.T. Nguyen 10/11/2007 12:44 PM 1 Analog Data, Digital Signals (5.3) 2 1 Analog Data, Digital Signals Digitization Conversion of analog data into digital

### UNIT 6 ANALOG COMMUNICATION & MULTIPLEXING YOGESH TIWARI EC DEPT,CHARUSAT

UNIT 6 ANALOG COMMUNICATION & MULTIPLEXING YOGESH TIWARI EC DEPT,CHARUSAT Syllabus Multiplexing, Frequency-Division Multiplexing Time-Division Multiplexing Space-Division Multiplexing Combined Modulation

### Lecture 5 Transmission

Lecture 5 Transmission David Andersen Department of Computer Science Carnegie Mellon University 15-441 Networking, Spring 2005 http://www.cs.cmu.edu/~srini/15-441/s05 1 Physical and Datalink Layers: 3

### Chapter 10 WDM concepts and components

Chapter 10 WDM concepts and components - Outline 10.1 Operational principle of WDM 10. Passive Components - The x Fiber Coupler - Scattering Matrix Representation - The x Waveguide Coupler - Mach-Zehnder

### 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

### a. Find the minimum number of samples per second needed to recover the signal without loosing information.

1. The digital signal X(t) given below. X(t) 1 0 1 2 3 4 5 7 8 t (msec) a. If the carrier is sin (2000 π t), plot Amplitude Shift Keying (ASK) Modulated signal. b. If digital level 1 is represented by

### William Stallings Data and Computer Communications. Chapter 8 Multiplexing. Multiplexing

William Stallings Data and Computer Communications Chapter 8 Multiplexing Multiplexing 1 Frequency Division Multiplexing FDM Useful bandwidth of medium exceeds required bandwidth of channel Each signal

### Politecnico di Milano Scuola di Ingegneria Industriale e dell Informazione. Physical layer. Fundamentals of Communication Networks

Politecnico di Milano Scuola di Ingegneria Industriale e dell Informazione Physical layer Fundamentals of Communication Networks 1 Disclaimer o The basics of signal characterization (in time and frequency

### 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)

### Model 6944 and 6940 Node bdr Digital Reverse 4:1 Multiplexing System designed for Prisma II Platform

Optoelectronics Model 6944 and 6940 Node bdr Digital Reverse 4:1 Multiplexing System designed for Prisma II Platform Description The bdr Digital Reverse 4:1 Multiplexing System expands the functionality

### Multiplexing Module W.tra.2

Multiplexing Module W.tra.2 Dr.M.Y.Wu@CSE Shanghai Jiaotong University Shanghai, China Dr.W.Shu@ECE University of New Mexico Albuquerque, NM, USA 1 Multiplexing W.tra.2-2 Multiplexing shared medium at

### Announcements : Wireless Networks Lecture 3: Physical Layer. Bird s Eye View. Outline. Page 1

Announcements 18-759: Wireless Networks Lecture 3: Physical Layer Please start to form project teams» Updated project handout is available on the web site Also start to form teams for surveys» Send mail

### Introduction to the Communication Process. Digital Transmission MEEC

Introduction to the Communication Process Digital Transmission MEEC José Manuel Bioucas Dias Instituto Superior Técnico, 2014 Outline 1. The communication process 2. Elements of a communication system

### Last Time. Transferring Information. Today (& Tomorrow (& Tmrw)) Application Layer Example Protocols ftp http Performance.

15-441 Lecture 5 Last Time Physical Layer & Link Layer Basics Copyright Seth Goldstein, 2008 Application Layer Example Protocols ftp http Performance Application Presentation Session Transport Network

### EECS 122: Introduction to Computer Networks Encoding and Framing. Questions

EECS 122: Introduction to Computer Networks Encoding and Framing Computer Science Division Department of Electrical Engineering and Computer Sciences University of California, Berkeley Berkeley, CA 94720-1776

### Implementation of Dense Wavelength Division Multiplexing FBG

AUSTRALIAN JOURNAL OF BASIC AND APPLIED SCIENCES ISSN:1991-8178 EISSN: 2309-8414 Journal home page: www.ajbasweb.com Implementation of Dense Wavelength Division Multiplexing Network with FBG 1 J. Sharmila

### International Journal of Advanced Research in Computer Science and Software Engineering

Volume 3, Issue 4, April 2013 ISSN: 2277 128X International Journal of Advanced Research in Computer Science and Software Engineering Research Paper Available online at: www.ijarcsse.com Design and Performance

### In this lecture. System Model Power Penalty Analog transmission Digital transmission

System Model Power Penalty Analog transmission Digital transmission In this lecture Analog Data Transmission vs. Digital Data Transmission Analog to Digital (A/D) Conversion Digital to Analog (D/A) Conversion

### Introduction to BER testing of WDM systems

Introduction to BER testing of WDM systems Application note 1299 Wavelength division multiplexing (WDM) is a new and exciting technology for migrating the core optical transmission network to higher bandwidths.

### MODULATION AND MULTIPLE ACCESS TECHNIQUES

1 MODULATION AND MULTIPLE ACCESS TECHNIQUES Networks and Communication Department Dr. Marwah Ahmed Outlines 2 Introduction Digital Transmission Digital Modulation Digital Transmission of Analog Signal

### Improved Analysis of Hybrid Optical Amplifier in CWDM System

Improved Analysis of Hybrid Optical Amplifier in CWDM System 1 Bandana Mallick, 2 Reeta Kumari, 3 Anirban Mukherjee, 4 Kunwar Parakram 1. Asst Proffesor in Dept. of ECE, GIET Gunupur 2, 3,4. Student in

### Terminology (1) Chapter 3. Terminology (3) Terminology (2) Transmitter Receiver Medium. Data Transmission. Simplex. Direct link.

Chapter 3 Data Transmission Terminology (1) Transmitter Receiver Medium Guided medium e.g. twisted pair, optical fiber Unguided medium e.g. air, water, vacuum Corneliu Zaharia 2 Corneliu Zaharia Terminology

### Dr. Monir Hossen ECE, KUET

Dr. Monir Hossen ECE, KUET 1 Outlines of the Class Principles of WDM DWDM, CWDM, Bidirectional WDM Components of WDM AWG, filter Problems with WDM Four-wave mixing Stimulated Brillouin scattering WDM Network

### <#)*,\$+0"\$#)* ?">& B"\$"')*+0"\$#)* ?">&? F. S. Blair March 24, Analog and Digital Signals

S. Blair March 24, 2008 8 1.5. Analog and Digital Signals

### Module 3: Physical Layer

Module 3: Physical Layer Dr. Associate Professor of Computer Science Jackson State University Jackson, MS 39217 Phone: 601-979-3661 E-mail: natarajan.meghanathan@jsums.edu 1 Topics 3.1 Signal Levels: Baud

### Lecture 1: Introduction

Optical Fibre Communication Systems Lecture 1: Introduction Professor Z Ghassemlooy Electronics & It Division School of Engineering Sheffield Hallam University U.K. www.shu.ac.uk/ocr 1 Contents Reading

### Analysis of four channel CWDM Transceiver Modules based on Extinction Ratio and with the use of EDFA

Analysis of four channel CWDM Transceiver Modules based on Extinction Ratio and with the use of EDFA P.P. Hema [1], Prof. A.Sangeetha [2] School of Electronics Engineering [SENSE], VIT University, Vellore

### Encoding and Framing

Encoding and Framing EECS 489 Computer Networks http://www.eecs.umich.edu/~zmao/eecs489 Z. Morley Mao Tuesday Nov 2, 2004 Acknowledgement: Some slides taken from Kurose&Ross and Katz&Stoica 1 Questions

### HFTA-08.0: Receivers and Transmitters in DWDM Systems

HFTA-08.0: Receivers and Transmitters in DWDM Systems The rapidly growing internet traffic demands a near-continuous expansion of data-transmission capacity. To avoid traffic jams on the data highways,

### Design of an Optical Submarine Network With Longer Range And Higher Bandwidth

Design of an Optical Submarine Network With Longer Range And Higher Bandwidth Yashas Joshi 1, Smridh Malhotra 2 1,2School of Electronics Engineering (SENSE) Vellore Institute of Technology Vellore, India

### Lecture 3 Concepts for the Data Communications and Computer Interconnection

Lecture 3 Concepts for the Data Communications and Computer Interconnection Aim: overview of existing methods and techniques Terms used: -Data entities conveying meaning (of information) -Signals data

### Encoding and Framing. Questions. Signals: Analog vs. Digital. Signals: Periodic vs. Aperiodic. Attenuation. Data vs. Signal

Questions Encoding and Framing Why are some links faster than others? What limits the amount of information we can send on a link? How can we increase the capacity of a link? EECS 489 Computer Networks

### Outline / Wireless Networks and Applications Lecture 3: Physical Layer Signals, Modulation, Multiplexing. Cartoon View 1 A Wave of Energy

Outline 18-452/18-750 Wireless Networks and Applications Lecture 3: Physical Layer Signals, Modulation, Multiplexing Peter Steenkiste Carnegie Mellon University Spring Semester 2017 http://www.cs.cmu.edu/~prs/wirelesss17/

### CS441 Mobile & Wireless Computing Communication Basics

Department of Computer Science Southern Illinois University Carbondale CS441 Mobile & Wireless Computing Communication Basics Dr. Kemal Akkaya E-mail: kemal@cs.siu.edu Kemal Akkaya Mobile & Wireless Computing

### CPSC Network Programming. How do computers really communicate?

CPSC 360 - Network Programming Data Transmission Michele Weigle Department of Computer Science Clemson University mweigle@cs.clemson.edu February 11, 2005 http://www.cs.clemson.edu/~mweigle/courses/cpsc360

### EC 554 Data Communications

EC 554 Data Communications Mohamed Khedr http://webmail. webmail.aast.edu/~khedraast.edu/~khedr Syllabus Tentatively Week 1 Week 2 Week 3 Week 4 Week 5 Week 6 Week 7 Week 8 Week 9 Week 10 Week 11 Week

### Optical DWDM Networks

Optical DWDM Networks ain The Oh Columbus, OH 43210 Jain@CIS.Ohio-State.Edu These slides are available at http://www.cis.ohio-state.edu/~jain/cis788-99/ 1 Overview Sparse and Dense WDM Recent WDM Records

### CHAPTER 2. Instructor: Mr. Abhijit Parmar Course: Mobile Computing and Wireless Communication ( )

CHAPTER 2 Instructor: Mr. Abhijit Parmar Course: Mobile Computing and Wireless Communication (2170710) Syllabus Chapter-2.3 Modulation Techniques Reasons for Choosing Encoding Techniques Digital data,

### 1/14. Signal. Surasak Sanguanpong Last updated: 11 July Signal 1/14

1/14 Signal Surasak Sanguanpong nguan@ku.ac.th http://www.cpe.ku.ac.th/~nguan Last updated: 11 July 2000 Signal 1/14 Transmission structure 2/14 Transmitter/ Receiver Medium Amplifier/ Repeater Medium

### Multiple Access (3) Required reading: Garcia 6.3, 6.4.1, CSE 3213, Fall 2010 Instructor: N. Vlajic

1 Multiple Access (3) Required reading: Garcia 6.3, 6.4.1, 6.4.2 CSE 3213, Fall 2010 Instructor: N. Vlajic 2 Medium Sharing Techniques Static Channelization FDMA TDMA Attempt to produce an orderly access

### International Journal of Advanced Research in Computer Science and Software Engineering

ISSN: 2277 128X International Journal of Advanced Research in Computer Science and Software Engineering Research Paper Available online at: Performance Analysis of WDM/SCM System Using EDFA Mukesh Kumar

### Optical Transport Technologies and Trends

Optical Transport Technologies and Trends A Network Planning Perspective Sept 1, 2014 Dion Leung, Director of Solutions and Sales Engineering dleung@btisystem.com About BTI Customers 380+ worldwide in

### Level 6 Graduate Diploma in Engineering Electronics and telecommunications

9210-116 Level 6 Graduate Diploma in Engineering Electronics and telecommunications Sample Paper You should have the following for this examination one answer book non-programmable calculator pen, pencil,

### FIGURE 7-1 Single-channel (DS-0-level) PCM transmission system

FIGURE 7-1 Single-channel (DS-0-level) PCM transmission system FIGURE 7-2A Two-channel PCM-TDM system: (a) block diagram; (b) TDM frame FIGURE 7-2B Two-channel PCM-TDM system: (a) block diagram; (b) TDM

### Year : TYEJ Sub: Digital Communication (17535) Assignment No. 1. Introduction of Digital Communication. Question Exam Marks

Assignment 1 Introduction of Digital Communication Sr. Question Exam Marks 1 Draw the block diagram of the basic digital communication system. State the function of each block in detail. W 2015 6 2 State

### 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

### Data Communication. Chapter 3 Data Transmission

Data Communication Chapter 3 Data Transmission ١ Terminology (1) Transmitter Receiver Medium Guided medium e.g. twisted pair, coaxial cable, optical fiber Unguided medium e.g. air, water, vacuum ٢ Terminology

### Chapter 3. Data Transmission

Chapter 3 Data Transmission Reading Materials Data and Computer Communications, William Stallings Terminology (1) Transmitter Receiver Medium Guided medium (e.g. twisted pair, optical fiber) Unguided medium

### DATA TRANSMISSION. ermtiong. ermtiong

DATA TRANSMISSION Analog Transmission Analog signal transmitted without regard to content May be analog or digital data Attenuated over distance Use amplifiers to boost signal Also amplifies noise DATA

### What is an FDM-TDM Transmultiplexer *

OpenStax-CNX module: m31548 1 What is an FDM-TDM Transmultiplexer * John Treichler This work is produced by OpenStax-CNX and licensed under the Creative Commons Attribution License 3.0 1 Frequency-Division

### Terminology (1) Chapter 3. Terminology (3) Terminology (2) Transmitter Receiver Medium. Data Transmission. Direct link. Point-to-point.

Terminology (1) Chapter 3 Data Transmission Transmitter Receiver Medium Guided medium e.g. twisted pair, optical fiber Unguided medium e.g. air, water, vacuum Spring 2012 03-1 Spring 2012 03-2 Terminology

### GS7000 and GainMaker Reverse Segmentable Node bdr Digital Reverse 2:1 Multiplexing System

GS7000 and GainMaker Reverse Segmentable Node bdr Digital Reverse 2:1 Multiplexing System The bdr Digital Reverse 2:1 Multiplexing System expands the functionality of the GS7000 and GainMaker Reverse Segmentable

### WDM. Coarse WDM. Nortel's WDM System

WDM wavelength-division multiplexing (WDM) is a technology which multiplexes a number of optical carrier signals onto a single optical fiber by using different wavelengths (i.e. colors) of laser light.

About the Tutorial Next Generation Networks (NGN) is a part of present-day telecommunication system, which is equipped with capabilities to transport all sorts of media, such as voice, video, streaming

### Lecture Fundamentals of Data and signals

IT-5301-3 Data Communications and Computer Networks Lecture 05-07 Fundamentals of Data and signals Lecture 05 - Roadmap Analog and Digital Data Analog Signals, Digital Signals Periodic and Aperiodic Signals

### Testing of DWDM + CWDM high speed systems. Christian Till Technical Sales Engineer, EXFO

Testing of DWDM + CWDM high speed systems Christian Till Technical Sales Engineer, EXFO Need more bandwidth? xwdm - Class of WDM Devices Wavelength Division Multiplexing (WDM) : Access 2 channels 1310nm,