Protection of RDS data communication
SZELAG ; KLINGLER ; NANO
Type de document
RAPPORT DE RECHERCHE
Langue
anglais
Auteur
SZELAG ; KLINGLER ; NANO
Résumé / Abstract
As RDS and especially RDS-TMC have to be very efficient because of their relatively low available bit rate, the transmitted information has to be particularly well protected against interference signals. One of the tasks of the EMCATT project is as RDS and especially RDS-TMC have to be very efficient because of their relatively low available bit rate, the transmitted information has to be particularly well protected against interference signals. One of the tasks of the EMCATT project is telematic applications using this communication support. The main conclusion of the state of normalisation shows that, as far as the RDS data reception of telematic systems is concerned, the immunity measurements according to the present en 55020 and the future IEC 315-x are not sufficient. Therefore, additional methods of measurements should be studied to check the correct reception of the received data. Good reception of rds signals (as standardised in en 50067) mainly depends on the receiver immunity to sinusoidal interference signals caused for example by other fm transmitters, GSM or ism equipment. Sinusoidal interference signals in the frequency band of the receiver (87,5 - 108 Mhz) have been considered throughout the second part of the study. Results were obtained using conventional fm signals and then laboratory fm signals. In the third part of our work, the immunity of a road information terminal (using the RDS-TMC support) intended to be installed on board vehicles in a near future, has been examined rather than the protection of the RDS data itself., RAPPORT DE CONTRAT
