18-04-2014, 02:30 PM
Error Detection and Correction
Error Detection.ppt (Size: 1.28 MB / Downloads: 10)
INTRODUCTION
Let us first discuss some issues related, directly or indirectly, to error detection and correction.
Types of Errors
Redundancy
Detection Versus Correction
Forward Error Correction Versus Retransmission
Coding
Modular Arithmetic
LINEAR BLOCK CODES
Almost all block codes used today belong to a subset called linear block codes. A linear block code is a code in which the exclusive OR (addition modulo-2) of two valid codewords creates another valid codeword.