Accession Number : AD0786542

Title :   Software Implementation of Error-Correcting Codes,

Corporate Author : ILLINOIS UNIV URBANA COORDINATED SCIENCE LAB

Personal Author(s) : Paschburg,Richard Howard

Report Date : AUG 1974

Pagination or Media Count : 106

Abstract : Most error-correcting coding systems now use special-purpose hardware machines. The alternate method, using a general-purpose computer to perform encoding and decoding, has several advantages over the use of special hardware. Hardware equipment designed specifically for a coding system can be expensive, especially if the decoding is difficult, and if only a few systems are to be built. Minicomputers, however, are easily available and can be used throughout communications systems. To compare various coding systems in software, programs to perform encoding and decoding were written in assembly language for a PDP-11/40 minicomputer. The results obtained for decoding ease clearly depend on the programming techniques used, which in turn depend on the computer available. The codes implemented are compared in terms of error-correcting ability, and effort involved in decoding. (Modified author abstract)

Descriptors :   *ERROR CORRECTION CODES, *MICROPROGRAMMING, CODING, DECODING, MINICOMPUTERS, DATA TRANSMISSION SYSTEMS, FOURIER TRANSFORMATION, THESES

Subject Categories : Computer Programming and Software
      Computer Hardware
      Cybernetics
      Non-radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE