An Overview of Activities on Wireless Networks in the European Project COST 257

Abstract

The paper summarises the work on wireless networks inside the COST 257 project, entitled "Impact of new services on the architecture and performance of broadband networks" and chaired by Prof. Tran-Gia of the Technical University of Wiirzburg (Germany). This project was established for 4 years (1996)(1997)(1998)(1999)(2000) and collected the researchers from 16 European countries represented by 32 organisations. Its topics are modelling, performance, network planning and analysis of present and future wireless systems. 1.

Cluster based Channel Model and Performance Analysis for MIMO Satellite Formation Flying Communication Systems

“…This simplified channel modelling approach is not sufficient for realistic transmission environment as it fails to account for the effect of rays that shares common or very closely spaced multipath propagation parameters. Following the cluster based channel modelling approach for MIMO systems [4,6,12], We propose a novel spatial channel model (SCM) for satellite formation flying wireless communication systems and performed Monte Carlo simulations to evaluate its performance using capacity, capacity ratio and capacity difference as metrics. The proposed cluster based channel model accounts for both earth to satellite propagation parameters such as delay of arrival, angle of arrival, angle of departure, delay spread, and power angular spectrum and space communication effects including ionospheric power loss and ionospheric angular deviations.…”

“…Satellite formation flying is currently a very hot area of research, however most of the research efforts are geared towards satellite formation design and control [11,10] leaving other aspects such as propagation channel modelling and performance analysis which are important aspects of any system design open. Channel modelling for terrestial MIMO wireless communication systems has received tremendous research attention within the last two decades resulting in a number of standardized MIMO models such as COST257 [12] and 3GPP/WINNER II [4] spatial channel models (SCM). These models are based on a combination of both statistical and physical wave propagation channel modelling approaches with small scale and large scale channel parameters fitted to certain distributions based on MIMO measurement campaigns performed in different environments.…”