Noise and error control

7/1/98


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Table of Contents

Noise and error control

Noise

Impulse Noise

Effect on data

Channel types and errors

Detection or correction

Redundancy

Error control model

Parity

Example

Complex Parity

Example

Cyclic redundancy codes

CRCs - 2

Simplex Channels

Error correction

FEC

FEC

FEC

Duplex Channels

Idle RQ

Continuous RQ

Go-back-n

Selective Re-transmission

Real protocols

Real protocols

Summary

Author: Preferred Customer

Email: Andy.Sloane@computer.org

Home Page: http://www.scit.wlv.ac.uk/~cm1950/computer_communications/