Preface

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題名:	Preface
作者:	林嘉慶;Berbineau, Marion;Kassab, Mohamed;Gransart, Christophe;Wahl, Martine;Marais, Juliette;Seetharamdoo, Divitha
貢獻者:	資訊電機學院通訊工程學系
關鍵詞:	Computer Science;Electromagnetism;Engineering Sciences;Networking and Internet Architecture;Signal and Image processing
日期:	2015-01-01
上傳時間:	2026-04-23 13:07:44 (UTC+8)
出版者:	IET Digital Library
摘要:	摘要： The chapter 3 is organized in three main sections. The first section is devoted to wireless communications for public transport applications. We first recall some challenges for sustainable mobility and the difficulties encountered to implement on the shelf wireless systems for public transport. Then, we will give a brief overview and some examples of the wireless technologies deployed today: beacons, bifilar communications, radio systems, etc. After this, we present the future trends in the domain of wireless systems for public transport applications and the ongoing research in the railway domain as well as the metro and tramway domains. Particularly, we emphasis the railway applications of Internet of Things. The second section of the chapter is focused on the localization function for public transport applications. The position is the core of every intelligent transportation system, for non-safe as well as safe systems. After a brief description of the principles and the advantages and drawbacks of the systems, we describe the main existing applications and the one foreseen in the future. We then extend to the case where satellites are not available, particularly in the case of tunnels. We describe the more solutions deployed or planned for the future. In the last section, we highlight the problems set up by the specific context of electromagnetic and propagation environments for railways. We show the necessity to develop electromagnetic modeling of some environments, to set up ad'hoc channel models as well as noise distribution. It is also important to cope with non-metallic material of the trains and to find solution for the implementation of multiple antennas at various locations and at very different frequencies (from several kHz to several GHz). Finally we conclude this chapter. 出版者： IET Digital Library 出版日期： 2015-01-01 出處： Chapter 3: ICT for Intelligent Public Transport Systems, state of knowledge and future trends. In: Clean Mobility and Intelligent Transport Systems, 2015 版權： licence_http://creativecommons.org/publicdomain/zero 識別號： ISBN: 1849198950 識別號： ISBN: 9781849198950 識別號： DOI: 10.1049/PBTR001E
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