W w w. w o o d a n d d o u g l a s. c o. u k dVMo – Digital Video for Moving Objects COFDM Digital Video / Data Link 1.

Slides:

Advertisements

Similar presentations

UAbove Law fahrul hakim2003 Wireless LAN implications Project managers and design engineer should be aware, the following potential problems from the implementation.

Advertisements

Radio over fiber.

EE578 Assignment #5 Abdul-Aziz.M Al-Yami November 8 th 2010.

Multiple Access Techniques for wireless communication

David Waitt Kate Disney 2008 April Digitizing An Analog World.

April 25, 2005ECE 457 Cellular Communication ECE 457 Spring 2005.

Computer Communication & Networks Lecture # 06 Physical Layer: Analog Transmission Nadeem Majeed Choudhary

GSM & CDMA A comparison. GSM Time Division Multiple Access Based Technology 200kHz bandwidth per carrier Deployed in reuse pattern 3/9, 4/12, 7/21 Available.

Wireless Computer Networking Melanie Hanson May 6, 2002.

McGraw-Hill©The McGraw-Hill Companies, Inc., 2004 Chapter 6 Multiplexing.

Wireless networking technology By Abbas Izadpanah January 2007.

GSM—Global System for Mobile. 2 How does GSM handle multiple users The 1G cellular systems used FDMA. The first cellular standard adopting TDMA was GSM,

AM/FM Receiver.

Overview.  UMTS (Universal Mobile Telecommunication System) the third generation mobile communication systems.

OFDM (Orthogonal Frequency Division Multiplexing )

William Stallings Data and Computer Communications 7th Edition

Broadband Fixed Wireless. 2 N+I_2k © 2000, Peter Tomsu 03_bb_fixed_wirel 1 GHz LOS Voice, Data,

1 DIGITAL RADIO -- The Eureka 147 DAB System THE THIRD AGE OF BROADCASTING The First Age of Radio Broadcasting - the era of AM The Second age - FM.

1 CMPT 371 Data Communications and Networking Spread Spectrum.

Modulation is the process of conveying a message signal, for example a digital bit stream or an analog audio signal, inside another signal that can be.

ESTeem Training Class Radio Technology Overview. Radio Basics Terminology – Familiarization with radio expressions Basic Components – Transmitter – Receiver.

Modulation of Waves (FM Radio, AM Radio and Television)

Co-Channel Interference

Possibilities, Promises and Planning

Technician License Course Chapter 3 Lesson Plan Module 7 – Types of Radio Circuits.

1 Cellular communications Cellular communications BASIC TELECOMMUNICATIONS.

ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING(OFDM)

THE RADIO OF THE FUTURE Natarajan.P No. 17 S7 Electronics & Comm. PTDC College of Engineering, Thiruvananthapuram.

Signal Propagation Propagation: How the Signal are spreading from the receiver to sender. Transmitted to the Receiver in the spherical shape. sender When.

Digital Video Broadcasting for Handheld devices(DVB-H) Sahar Aghayan

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

Concepts of Multiplexing Many input signals to one transmission media Reduces the number of channels or conductors running from point A to point B Added.

CIS 321 – Data Communications & Networking Chapter 8 – Multiplexing.

Wireless Transmission and Services Chapter 9. Objectives Associate electromagnetic waves at different points on the wireless spectrum with their wireless.

MASNET GroupXiuzhen ChengFeb 8, 2006 Terms and Concepts Behind Wireless Communications.

EE578 Assignment #5 Abdul-Aziz.M Al-Yami November 8 th 2010.

1 ELE5 COMMUNICATIONS SYSTEMS REVISION NOTES. 2 Generalised System.

CDMA Code Division Multiple Access. is a channel access method

Multiplexing. Multiplexing is the set of techniques that allows simultaneous transmission of multiple signals across a single link.

1. Physical Transmission Transmission Media Wire (guided) Coaxial cable Twisted Pair UTP STP Fiber Optic Wireless (unguided) Radio waves Microwave Infrared.

1 William Stallings Data and Computer Communications 7 th Edition Chapter 9 Spread Spectrum.

1 Orthogonal Frequency- Division Multiplexing (OFDM) Used in DSL, WLAN, DAB, WIMAX, 4G.

CSCI 465 D ata Communications and Networks Lecture 23 Martin van Bommel CSCI 465 Data Communications & Networks 1.

Presentation by : Chetna R Parmar M.E.E.C. – (C.S.E) Sem-I LD College of Engineering.

August 13, 1999 TXAA Feedback Channel 1. August 13, 1999 TXAA Feedback Channel 2 Contents  Introduction  TXAA and Feedback Channel Description  Generation.

11-Mar-16Physical Layer Multiplexing Multiplexing is the set of techniques that allows multiple signal transmission across a single medium at the same.

Introduction to Communication Lecture (07) 1. Bandwidth utilization Bandwidth utilization is the wise use of available bandwidth to achieve specific goals.

DATA AND COMPUTER COMMUNICATIONS Eighth Edition by William Stallings Lecture slides by Lawrie Brown Chapter 9 – Spread Spectrum.

EVENLODE Helitech

Antenna Developments for WiFi Phase Applications Diversity MIMO.

Lecture 3 Course Instructor: Marzia ALAM

Lecture 2.4. Multiplexing. Learning Outcomes Discuss the concept of Multiplexing Explain & calculate frequency-division multiplexing. Explain & calculate.

SMART ANTENAS Presentation by Mr. Sahil Tarfe Mr. Siddhesh Sonawdekar.

Multiple Access Techniques for Wireless Communication

Outline Introduction Type of Multiplexing FDMA TDMA CDMA Future Work

EARTH SEGMENT & SPACE LINK

Bandwidth Utilization: Multiplexing and Spreading

WiMAX 1EEE Protocol Stack

Bandwidth Utilization

Bandwidth Utilization

UNIT I – Wireless channels

Chapter 4: Digital Transmission

Orthogonal Frequency Division Multiplexing

By Engr: S Rehan ali shah

Spread Spectrum A signal that occupies a bandwidth of B, is spread out to occupy a bandwidth of Bss All signals are spread to occupy the same bandwidth.

Multiplexing Simultaneous transmission of multiple signals across a single data link As data & telecomm use increases, so does traffic Add individual links.

The Physical Layer Chapters

Presentation transcript:

w w w. w o o d a n d d o u g l a s. c o. u k dVMo – Digital Video for Moving Objects COFDM Digital Video / Data Link 1

w w w. w o o d a n d d o u g l a s. c o. u k WHAT IS dVMo ? The dVMo family is a range of products using COFDM techniques to provide a highly resilient radio transmission platform that can delivery voice, video and data information for all manner of applications. dVMo is particularly suited to the reception of transmissions from moving transmitters, normally a difficult undertaking due to so many reflections being created from adjacent objects. 2

w w w. w o o d a n d d o u g l a s. c o. u k SYSTEM COMPONENTS 3

w w w. w o o d a n d d o u g l a s. c o. u k WHAT IS COFDM ? Coded Orthogonal Frequency Division Multiplex The transmitted signal comprises 2000 carrier frequencies. The data to be sent over air is spread over these 2000 carriers. Fading due to multipath interference is frequency selective. A loss of some carriers does not result in total loss of reception. 4

w w w. w o o d a n d d o u g l a s. c o. u k COFDM, DVB-T, TRANSPORT STREAMS COFDM is a transmission technique popularised by the broadcast industry allowing the transmission of high data rate signals across 2000 carriers in an 8MHz RF bandwidth. The DVB-T standard allows multiple services to be uniquely tagged and carried in a single Transport Stream for later retrieval (‘unpicking’) at a receiver site. Any information can be carried across such a link providing it is made to ‘look like’ part of the transport stream.

w w w. w o o d a n d d o u g l a s. c o. u k LINK CAPABILITY The W&D dVMo product is a radio link based on the DVB-T standard using COFDM techniques. As standard the dVMo link has the capacity to carry a single video, 2 audio and a RS232 low bit rate data stream. The dVMo link has an external MUX input allowing a secondary DVB-T transport stream to be ‘added into’ the internally generated stream.

w w w. w o o d a n d d o u g l a s. c o. u k TRANSMITTER & MUX CONCEPT

w w w. w o o d a n d d o u g l a s. c o. u k TRANSMITTERS 8

w w w. w o o d a n d d o u g l a s. c o. u k LINEAR AMPLIFIERS 9

w w w. w o o d a n d d o u g l a s. c o. u k DIVERSITY RECEIVER

w w w. w o o d a n d d o u g l a s. c o. u k DIVERSITY CONCEPT 11

w w w. w o o d a n d d o u g l a s. c o. u k MASTHEAD COMPONENTS 12

w w w. w o o d a n d d o u g l a s. c o. u k RECEIVERS 13

w w w. w o o d a n d d o u g l a s. c o. u k IP CONFIGURATION

w w w. w o o d a n d d o u g l a s. c o. u k IP DEVICES 15

w w w. w o o d a n d d o u g l a s. c o. u k LINK CAPACITY

w w w. w o o d a n d d o u g l a s. c o. u k PROFILE CONTROLLERS 17

w w w. w o o d a n d d o u g l a s. c o. u k ACCESSORIES 18

w w w. w o o d a n d d o u g l a s. c o. u k RAPID DEPLOYMENT UNITS 19

w w w. w o o d a n d d o u g l a s. c o. u k REPEATER INSTALLATIONS 20

w w w. w o o d a n d d o u g l a s. c o. u k FREQUENCY OPTIONS 320 – 360MHz 800 – 860 MHz 1.2 – 1.4 GHz 1.9 – 2.3 GHz 3.4 – 3.6 GHZ 5.0 – 5.6 GHz 21 The following bands are available as standard builds : -

w w w. w o o d a n d d o u g l a s. c o. u k DEPLOYMENT SCENARIOS 22

w w w. w o o d a n d d o u g l a s. c o. u k MOBILE TO FIXED BASE STATION 23

w w w. w o o d a n d d o u g l a s. c o. u k MOBILE TO MOBILE (Car following) 24

w w w. w o o d a n d d o u g l a s. c o. u k REPEATER RANGE EXTENSION 25

w w w. w o o d a n d d o u g l a s. c o. u k AIR TO GROUND WITH TELECONTROL 26

w w w. w o o d a n d d o u g l a s. c o. u k DIVERSITY SECTORED ANTENNA 27

w w w. w o o d a n d d o u g l a s. c o. u k SECTOR DIVERSITY COMBINING 28

w w w. w o o d a n d d o u g l a s. c o. u k MOBILE WEBCAM 29

w w w. w o o d a n d d o u g l a s. c o. u k The Wood and Douglas range of dVMo products are available in Australia / New Zealand and other countries in the SE Asia / Pacific Rim region from: 30 Decibel Engineering Pty Ltd 21 Woods Parade, Fairlight, NSW 2094, Australia w: e: p: