Cho Young Jong, Choi Dug Kyoo

The Transactions of the Korea Information Processing Society (1994 ~ 2000), Vol. 4, No. 11, pp. 2786-2800, Nov. 1997
10.3745/KIPSTE.1997.4.11.2786,   PDF Download:

Abstract

In this paper, we investigate how well the channel memory (statistical dependence in the occurrence of transmission errors) can be used in the evaluation of widely used error control schemes. For this we assume a special case named as the simplest Markovian block-error pattern with two states, in which each block is classified into two classes of whether the block transmission is in error or no. We apply the derived pattern to the performance evaluation of the practical link-level procedures, LAPB/D/M with multi-reject options, and investigate both throughput and user-perceived response time behavior on the discrete-time domain to determine how much the performance of error recovery action is improved under burst error condition. Through numerical example, we show that the simplest Markovian block-error pattern tends to be superior in throughput and delay characteristics to the random error case. Also, instead of mean alone, we propose a new measure of the response time specified as mean plus two standard deviations so as to consider user-perceived worst cases, and show that it results in much greater sensitivity to parameter variations than does mean alone.

Statistics
Cite this article