In this contribution, the authors perform a detailed analysis relating to the use of the\nmulticonductor UIC (Union Internationale des Chemins de fer) cables as a broadband data\ntransmission channel onboard regional trains. The analysis is performed evaluating the channel\nfrequency response and the channel capacity as a function of the distance between communication\ndevices, in the 2â??30 MHz frequency range of broadband powerline communications . The per unit\nlength (p.u.l.) parameters are measured and simulated in a finite element method (FEM) code,\nallowing accurate full multiconductor simulations to evaluate the attenuations of the selected\nchannel for communication and the cross-talk between cables. This study has been conducted\nconsidering that there are other signals carried by the cable, during regular train operation, and\ntheir integrity needs to be taken into account. The results show that, as a matter of fact, UIC cables\ncan be used to transmit high-speed data; this can be exploited for introducing additional facilities\n(i.e., infotainment, safety features and so on) onboard regional trains, at a reasonably low cost, since\nno new cabling harnesses need be installed.
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