a PhD seminar at COSC

["K. Pawlikowski" <krys@cosc.canterbury.ac.nz>]

===========================================================

TITLE: "Modelling of Self-Similar Teletraffic for Discrete-Event Simulation"


SPEAKER:  Hae-Duck Joshua Jeong, PhD Student

                 Computer Science Department

                 University of Canterbury


VENUE: Room 031 Cosc / Math / Stats building - University of Canterbury


DATE: Wednesday, November 27, 2002


TIME: 10:00 to 10:50

               followed by questions, coffee/tea & (maybe) good quality
nibbles

ABSTRACT:


Recent studies of real teletraffic data in modern computer networks have
shown

that teletraffic exhibits self-similar (or fractal) properties over a
wide range of

time scales. These properties are very different from the traditional
models of

teletraffic based on Poisson, Markov-modulated Poisson, and related
processes.

The use of traditional models in networks characterised by self-similar
processes

can therefore lead to incorrect conclusions about the performance of
analysed

networks and full understanding of the self-similar nature in
teletraffic is an

important issue.

In this talk, I will present the following main contributions of my PhD
study to

the field of discrete-event simulation of computer networks with
strongly-dependent,

self-similar teletraffic. They include:

   - Exhaustive evaluation of estimators of the self-similarity
      parameter H.

   - Two new pseudo-random generators for self-similar teletraffic.

   - Comparative analysis of practical pseudo-random generators of

      self-similar teletraffic.

   - A study of necessary conditions for preservation of the Hurst
      parameter and auto-correlation functions in self-similar processes
      during transformation of their marginal distributions.
   - Influence of compression algorithms on the correlation structure of
      teletraffic.

   - Guidelines for sequential simulations of networks with self-similar
teletraffic.


Please plan to be there in force ..

--

-- 

Associate Professor Wolfgang Kreutzer
Department of Computer Science
University of Canterbury
Private Bag
Christchurch, New Zealand

phone: +64 3 364 2987 extension 7769
fax:       +64 3 364 2569
email: wolfgang@cosc.canterbury.ac.nz
www:  www.cosc.canterbury.ac.nz/~wolfgang


-- 
* Dr Krzysztof Pawlikowski, Associate Professor 	
* Dept. of Computer Science	ph.  +(643) 3642987 ex.7772
* University of Canterbury	fax. +(643) 3642569
* Christchurch, New Zealand	URL: www.cosc.canterbury.ac.nz/~krys