Some members of the research group, together with international and industrial collaborators. It also includes completely new aspects of spatial mobility and vastly increased capabilities for computation and simulation. Classical methods of analysis and synthesis are of little use in such situations. We aim at developing new methods for statistical analysis and prediction of computer generated teletraffic. Basic issues concern heavy tailed modelling and resulting longrange dependence, selfsimilarity and nonstationarity.
Estimation includes use of wavelets and quadratic variation, and also more traditional methods.
The results are aimed at dimensioning future systems and detection and understanding trends in telecommunication usage. This is studied in the project Data traffic modelling Spatial statistics can be used to improve hand over from one base station to another when a mobile station moves away from the coverage area of the current base station. It can also be an important tool for determining where to locate antennas and how to distribute power in different directions. Our work is carried out in cooperation with Ericsson Utvecklings AB and Ericsson Radio Systems AB . Joachim Johansson, Dan Mattsson , Ola Engvall, Christer kerblom.