AUDENS ACT Home
AUDENS ACT Company
AUDENS ACT Expertise & Services
AUDENS ACT References
AUDENS ACT Reference Projects
Wideband Flexible Front-End
ATM Communication Network
Ultra Sensitive Navigation Receiver
MF-TDMA Receiver
DVB-RCS Network Sync
GARDA
Adaptive Fade Mitigation
DDSE
ESA Galileo
AUDENS ACT Customers
AUDENS ACT Publications
AUDENS ACT Contact
AUDENS ACT Imprint
Support to ESA for Galileo Signal Definition Refinement

The positioning performance of an algorithm that has been especially developed for the localisation of mobile phones (one-shot positioning) was analysed for low SNR values and typical mobile fading channels.

Existing methods to mitigate the impact of multipath echoes for rectangular chip shaping were shortly recapitulated. Since they did not provide adequate performance for SRC (square-root raised-cosine) chip shaping, new algorithms, especially designed for band-limited signals, have been developed also leading to a patent (European patent no. 1 400 028 B1 issued on 5 October 2005). Their performance has been analysed and compared to the existing algorithms.

The performance characteristics of spreading codes which can serve as code design criteria have been summarised. Subsequently, the candidate PN spreading codes were briefly recapitulated and in more general terms, a design approach for the spreading code selection has been suggested.

back
Galileo Launch
Copyright ESA