Bases de donn�ees Bases de donn�ees r�eparties COMPUTERS Computer Communication Networks Computer networks Data Processing Data transmission systems Database management Distributed databases Donn�ees Doppler Effect Doppler effect Effet Doppler-Fizeau Engineering geology Geoengineering Geotechnical Engineering and Applied Earth Sciences Geotechnical engineering Gestion Innovations Multiplexage par r�epartition orthogonale de la fr�equence Numerical Analysis Numerical analysis Orthogonal frequency division multiplexing R�eseaux d'ordinateurs Technological innovations Transmission Transmission sans fil Wireless communication systems