Technology - Infrastructure - Key Concepts

Synopsis

The basic principles of analogue audio/video and digital communication systems are discussed. Modulation systems, data compression, radio frequency propagation and communications and software operation using the 7 layer OSI protocol stack and the 5 layer Internet protocol model are introduced. The trends in communication technologies and the importance of the Internet are discussed in order to provide a basis for understanding the many communication and computing technologies.

Table of Contents

  • 1. Synopsis
  • 2. Communication, signals and data
    • 2.1 Light and sound
    • 2.2 Analogue electronics
    • 2.3 Digital conversion
      • 2.3.1 Frequency limits
    • 2.4 Binary numbers
      • 2.4.1 Hexadecimal and dotted quad representations
    • 2.5 ASCII text
      • 2.5.1 Unicode character sets
      • 2.5.2 Hypertext Markup Language (HTML)
    • 2.6 Data storage and compression
  • 3. The pace of electronic technology development
  • 4. Types of communication system
    • 4.1 Basic communication principles
    • 4.2 Basic characteristics of communication technologies
    • 4.3 Analogue and digital
      • 4.3.1 GSM example
      • 4.3.2 PC example
    • 4.4 Analogue versus digital
  • 5. The OSI layered model of networks and applications
    • 5.1 Distributed information system
    • 5.2 Purpose of OSI
    • 5.3 Functions and examples
    • 5.4 How the model works
  • 6. The 5 Layer Internet Protocol Model
    • 6.1 Physical Layer 1
    • 6.2 Data Link Layer 2
    • 6.3 Network Layer 3
    • 6.4 Transport Layer 4
    • 6.5 Application Layer 5
  • 7. The increasing importance of the Internet
    • 7.1 From smoke signals to Internet
    • 7.2 New foundation for future systems
      • 7.2.1 Simplicity of the network
      • 7.2.2 Multicasting and QoS add complexity to the network
    • 7.3 The importance of the Internet
  • 8. Related reports
  • Exhibit 1 – OSI layered model: a web-browsing example

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Licence Information

Focus Report Profile

Technologies

Broadband Fixed
Telecoms Infrastructure

Number of pages 17

Status Archived

Last updated 4 May 2008
Update History

Analyst: Robin Whittle

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