Title :
Implementation of a transmission encoding system for a track circuit
Author :
Hernández, A. ; Pérez, M.C. ; Jiménez, A. ; García, J.J. ; Ureña, J. ; García, E. ; Mazo, M.
Author_Institution :
Electron. Dept., Univ. of Alcala, Madrid, Spain
Abstract :
The current development of railway transport gives a significant importance to the design of suitable and reliable safety systems. Among them, the common track circuit can be improved to enhance its performance, by providing redundancy, immunity to noise and more information from the track circuit. This work proposes a novel track circuit based on the encoding of the electrical transmissions with Kasami codes. Every node emits its corresponding code that can be detected at next nodes by correlation techniques. The suitable selection of orthogonal sequences, as well as different carrier frequencies for emissions, allow to have simultaneous emissions and receptions without cross interferences.
Keywords :
encoding; orthogonal codes; rail traffic; railway safety; redundancy; safety systems; transportation; Kasami codes; common track circuit; electrical transmissions; orthogonal sequences; railway transport; redundancy; safety systems; transmission encoding; Circuit noise; Coupling circuits; Encoding; Frequency; Gaussian noise; Interference; Proposals; Rail transportation; Railway safety; Working environment noise;
Conference_Titel :
Emerging Technologies & Factory Automation, 2009. ETFA 2009. IEEE Conference on
Conference_Location :
Mallorca
Print_ISBN :
978-1-4244-2727-7
Electronic_ISBN :
1946-0759
DOI :
10.1109/ETFA.2009.5347192