DigitalComm

DigitalComm - Broadband Technologies and Applications: A...

Info iconThis preview shows pages 1–12. Sign up to view the full content.

View Full Document Right Arrow Icon
Broadband Technologies and Applications: A Tutorial Presentation by Dale N. Hatfield Adjunct Professor, University of Colorado at Boulder at the Wyoming Telecommunications Forum Casper, Wyoming June 29, 2006
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Introduction • Purpose: – To provide non-engineers with an overview of major trends in telecommunications technology and to reflect briefly on the policy and regulatory implications of those trends
Background image of page 2
Outline • The Digital Revolution • The Race for Broadband • The Wireless Revolution • The Role of the Internet, the Internet Protocols and “Intelligence at the Edge” • Convergence and Its Implications
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
The Digital Revolution Time Intensity • Analog Signal
Background image of page 4
• Digital Signal The Digital Revolution Time Intensity 0 1 0 0 0 1 0 1 1 0 0
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
1 The Digital Revolution • Analog and Digital Networks 0 0 1 1 0 1 1 1 0 0 1 1 1 1 0 1 0 0 0 1 0 1 0 0 0 1 1 Time Digital Network: voice, data, image and video information carried as a sequence of ones and zeros represented by pulses of current or light or radio waves
Background image of page 6
The Digital Revolution • Analog to Digital and Digital to Analog Conversion 12.3 12.6 12.9 13.6 13.9 14.8 14.1 13.9 Analog Signal Analog Signal A/D D/A Sequence of Numbers (Transmitted as a Sequence of Binary Numbers) On and Off Pulses Representing Binary Numbers
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
The Digital Revolution • Why Digital? – Analog Amplification vs. Digital Regeneration AMP AMP AMP INPUT OUTPUT Digital Regeneration: “Perfect” Signal is Regenerated Analog Amplification: Noise Accumulates INPUT Repeater Repeater Repeater
Background image of page 8
The Digital Revolution • Why Digital? – Digital Regeneration Repeater -- Other Advantages (Examples): Ease of combining different kinds of signals (multiplexing) Rapid decline in costs and improvements in performance of digital devices (“chips”) Ease of encryption
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
The Race for Broadband • What Is Bandwidth? – In simple terms, bandwidth is just a measure of how fast information can be transmitted – The larger the bandwidth, the more information that can be transmitted in a given amount of time – In the digital world, bandwidth is measured in bits per second – Analogous measures: vehicles per hour or gallons per minute
Background image of page 10
The Race for Broadband • What Is Bandwidth? – To over simplify:
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 12
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 40

DigitalComm - Broadband Technologies and Applications: A...

This preview shows document pages 1 - 12. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online