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Communications Systems |
Structure of the Division
Aeronautical Communications and Multiple-Access
This group develops new digital mobile communications systems for aeronautical applications especially for flight guidance systems. New transmission schemes are studied and prototyped by DSP and FPGA technology. One of the key competences is channel modelling, coding and modulation, OFDM related issues such as PAPR and sidelobe suppression, interference mitigation and multiple-access. Furthermore, the group works on protocol issues, routing, gateway selection and mobile aeronautical ad hoc networks. The group is active within the framework of ICAO and participates in the ACP panel.
This group is active in the area of (a) satellite navigation focussing on challenging scenarios such as urban canyons and indoor, and (b) the combination of satellite navigation with communications with a special focus on vehicular applications and disaster management. In satellite navigation the focus on measurement campaigns, channel modelling and multipath mitigation. The combination of satellite navigation with communications enables a potpourri of new services with the extended scope to develop new concepts and systems for car-to-car and train-to-train communications as well as to pave the way for context aware mobile radio services. Prototyping and demonstration of these services is carried out within various projects. Further topics of the group include its involvement in the development of a Tsunami Early Warning System (TEWS) and the development of new services for disaster management.
The focus of this group is on areas in mobile radio communications. In particular, the area of interest is positioning via mobile radio signals either stand-alone or in combination with satellite navigation. The purely mobile radio based positioning techniques are developed for OFDM based mobile radio systems such as WLAN and LTE. The technical work encompasses channel measurement campaigns, channel modelling, synchronisation, multipath mitigation, hybrid data fusion (mobile radio and satellite navigation) and cooperative positioning techniques. The group leads the two European projects WHERE and GRAMMAR and also develops a testbed for LTE and GNSS based positioning.
Author: Fiebig
Last Change: January 2009