TITLE:
Experimental Analysis of UWB Signal Performance in a Constrained Environment for Railway Application
AUTHORS:
Ouafae Cohin, Sara Ibenjellal, Fouzia Boukour, Sylvie Baranowski
KEYWORDS:
UWB, Channel Model, Channel Simulation, Simulation Analysis
JOURNAL NAME:
Wireless Engineering and Technology,
Vol.6 No.4,
October
12,
2015
ABSTRACT: In the railway
application, in order to establish the communication between wagons, some technologies
are proposed such as the ZigBee and HTN (Hybrid Networking Technology). However,
these techniques have some limitations such as: the low data rate, non-secured
transmission and interferences. The Ultra Wide Band (UWB) technology presents a
good alternative and a good candidate for this application. In recent years,
UWB communication systems have received significant attention from both the
industry and the academia. In February 2002, the Federal Communications
Commission (FCC) allocated 7500 MHz of spectrum (from 3.1 GHz to 10.6 GHz) for
use by UWB devices. This ruling has helped to create new standardization
efforts, like IEEE 802.15.3a, which focus on developing high speed wireless
communication systems. The application of the UWB radio technique in the
transport is a more recent topic that is thoroughly researched considering several factors including the nature of the
transport propagation environment; the use of adequate transmitting/receiving
duty cycle (LDC); the number of devices using UWB technology, the types and levels
of interferences. Regulation bodies have considered these railway applications.
Impulse Radio Ultra Wideband (IR-UWB) systems have been studied for their
inherent advantages of coexistence with narrowband systems with high data rate
over short distances with sufficiently small amount of transmitted power. The
UWB systems are highly susceptible to interference between the coexisting
narrowband systems because of very low transmission power. This paper considers
the use of the UWB radio technology for railway application. In this paper, we
evaluate the communication performance in constrained environment for the
railway application.