How Digital Communication Works

نویسنده

  • David G. Messerschmitt
چکیده

Supplementary section for Understanding Networked Applications: A First Course, Morgan Kaufmann, 1999. Copyright notice: Permission is granted to copy and distribute this material for educational purposes only, provided that this copyright notice remains attached. The underlying technology for transporting a bit stream on a communication link is digital communication. In networked computing, there are three important types of communication links: • Backbone and business access links. For high bitrates, fiber optics is the communication medium of choice in which bits are communicated through a guided glass medium by pulses of light (a pulse indicates a “1” and the absence of a pulse signals a “0”). Its inherent bitrate capability is, for all intents and purposes, unlimited (see "Fiber Optics and Optical Networking" in Chapter 20). While fiber optics is a remarkable technology, it is not applicable to every situation, including the two that follow.

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تاریخ انتشار 1999