'Forward error' diaporamas de présentation

William Stallings Data and Computer Communications 7 th Edition

William Stallings Data and Computer Communications 7 th Edition. Chapter 14 Cellular Wireless Networks. Principles of Cellular Networks. Underlying technology for mobile phones, personal communication systems, wireless networking etc. Developed for mobile radio telephone

784 views • 64 slides

Video Coding For Compression . . . and Beyond

Compression. Video Coding For Compression . . . and Beyond. Bernd Girod Information Systems Laboratory Department of Electrical Engineering Stanford University. Bit Consumption of US Households. Bit equivalent, assuming state-of-the-art compression, year 2000. CIF. QCIF.

671 views • 51 slides

Coding and Error Control

Coding and Error Control. Chapter 8. Coping with Data Transmission Errors. Error detection codes Detects the presence of an error Automatic repeat request (ARQ) protocols Block of data with error is discarded Transmitter retransmits that block of data

733 views • 39 slides

Status DAQ

562 views • 37 slides

CprE 558: Real-Time Systems

CprE 558: Real-Time Systems. Lectures 15-16 : Dependability Concepts & Faul-Tolerance. Dependable System. A system is dependable when it is trustworthy enough that reliance can be placed on the service that it delivers. For a system to be dependable, it must be

477 views • 33 slides

Surviving Wi-Fi Interference in Low Power ZigBee Networks

Surviving Wi-Fi Interference in Low Power ZigBee Networks. Chieh -Jan Mike Liang, Nissanka Bodhi Priyantha , Jie Liu, Andreas Terzis Johns Hopkins University, Microsoft Research Sensys 2010 Presenter: SY. Outline. Introduction WiFi and Zigbee Interactions

750 views • 30 slides

Scalable Video Transport over Wireless IP Networks

Scalable Video Transport over Wireless IP Networks. Dapeng Wu Electrical & Computer Engineering University of Florida. Bandwidth Fluctuations. Access SW. Cellular Networks. Access SW. Domain B. Domain A. Domain C. Internet. Source. Gateway. Wireless LAN. 1 Mb/s. Receiver .

410 views • 27 slides

Introduction

Introduction. Chapter 1. Wireless Comes of Age. Guglielmo Marconi invented the wireless telegraph in 1896 Communication by encoding alphanumeric characters in analog signal Sent telegraphic signals across the Atlantic Ocean Communications satellites launched in 1960s

334 views • 23 slides

Introduction

Introduction. Chapter 1. Wireless Comes of Age. Guglielmo Marconi invented the wireless telegraph in 1896 Communication by encoding alphanumeric characters in analog signal Sent telegraphic signals across the Atlantic Ocean Communications satellites launched in 1960s

342 views • 23 slides

Chapter 1 Scientific Computing Approximation in Scientific Computing (1.2) January 12, 2010

Chapter 1 Scientific Computing Approximation in Scientific Computing (1.2) January 12, 2010. Absolute and Relative Errors. Example: Approximations. Model Earth as an ellipsoid?. Irrational number has infinite digits in decimal expansion. Floating-point number system.

618 views • 23 slides

Voice over IP

Voice over IP. Why Challenges/solutions Voice codec and packet delay. Motivation: Benefits: Reduce backbone network costs: managing a single packet backbone instead of multiple backbones (packet switching for IP and circuit switching for voice). No way for TDM networks to support IP traffic

399 views • 11 slides