Accession Number : AD0777273

Title :   The Application of Error Models to the Determination of Error Causes in Digital Channels.

Descriptive Note : Master's thesis,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OHIO SCHOOL OF ENGINEERING

Personal Author(s) : Worthley,Jonathan P.

Report Date : DEC 1973

Pagination or Media Count : 82

Abstract : The purpose of this study is to determine whether the error cause present in a modem or channel can be ascertained using the parameters of matrix and renewal models of the digital channel. Data generated by a modem subjected to three major error causes, impulse hits, frequency offset, and phase jitter, were supplied by the Digital Communications Experimental Facility (DICEF), Rome Air Development Center, Griffiss AFB, New York. A simulator was used to produce the error cause in the model or channel. The parameters for Fritchman's partitioned Markov chain model, the parameters of the renewal channel model of Muntner and Wolf, and the stationary distribution and stationarity of the transition probabilities for the error-free run model are used to determine the cause of errors. This study indicates that they can be used for this purpose. (Author)

Descriptors :   *Multichannel communications, *Pulse communications, *Error correction codes, Digital systems, Modems, Stochastic processes, Graphics, Mathematical models, Theses

Subject Categories : Cybernetics
      Non-radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE