%0 Conference Proceedings %T OMTDR using BER estimation for ambiguities cancellation in ramified networks diagnosis %+ Département d'Architectures, Conception et Logiciels Embarqués-LIST (DACLE-LIST) %+ Ecole Nationale d'Ingénieurs de Tarbes (ENIT) %A Ben Hassen, W. %A Auzanneau, F. %A Incarbone, L. %A Peres, F. %A Tchangani, A.P. %Z Conference of 2013 IEEE 8th International Conference on Intelligent Sensors, Sensor Networks and Information Processing: Sensing the Future, ISSNIP 2013 ; Conference Date: 2 April 2013 Through 5 April 2013; Conference Code:97771 %< avec comité de lecture %B 2013 IEEE Eighth International Conference on Intelligent Sensors, Sensor Networks and Information Processing %C Melbourne, VIC, Australia %V 1 %P 414-419 %8 2013-04-02 %D 2013 %R 10.1109/ISSNIP.2013.6529826 %K Communication %K Sensor networks %K Reflectometers %K Reflection %K Fault detection %K Distributed strategies %K Interference avoidance %K Interference mitigation %K On-line diagnosis %K Orthogonal tones %K Resource allocation schemes %K Time domain reflectometry %K Telecommunication systems %K Cables %K Bandwidth %K Bandwidth control %K Smart sensors %K Signal detection %K Time domain analysis %K Orthogonal frequency division multiplexing %K Interference suppression %K Intelligent control %K Data processing %Z Engineering Sciences [physics]Conference papers %X Nowadays, increasing demands for on-line wire diagnosis using reflectometry have imposed serious challenges on signals processing, bandwidth control and interference mitigation. On-line diagnosis aims at detecting and locating faults accurately while the target system is running. In this work, a new reflectometry method, named 'Orthogonal Multi-Tone Time Domain Reflectometry' (OMTDR), is proposed. OMTDR, based on Orthogonal Frequency Division Multiplexing (OFDM), is a suitable candidate for on-line diagnosis as it permits interference avoidance, bandwidth control and data rate increase thanks to the use of orthogonal tones and guard intervals. Over the diagnosis function, OMTDR adds communication between sensors to more accurately determine faults position in a multi-branch network using a distributed strategy. OMTDR was tested on a branched network consisting of three cables with different lengths, with sensors at each cable end. Here, the sensors signals are carefully constructed using a resource allocation scheme to use frequencies below and above the prohibited bandwidth, used by the target system, for communication and diagnosis. Simulation results show that the proposed method performs well in a branched wiring network as it permits to detect and locate faults accurately even when the target system is operating. %G English %L cea-01839864 %U https://cea.hal.science/cea-01839864 %~ CEA %~ DRT %~ LIST %~ DSCIN %~ TOULOUSE-INP %~ UT3-INP %~ UT3-TOULOUSEINP