Air interfaces for satellite based digital TV broadcasting in-the railway environment

作     者：Scalise, Sandro Mura, Rodolfo Mignone, Vittoria 

作者机构：DLR Inst Commun & Navigat D-82230 Wessling Germany Alcatel Alenia Space Italy I-00131 Rome Italy RAI CRIT I-10135 Turin Italy 

出 版 物：《IEEE TRANSACTIONS ON BROADCASTING》 (IEEE Trans Broadcast)

年 卷 期：2006年第52卷第2期

页      面：158-166页

核心收录：

学科分类：0810[工学-信息与通信工程] 0808[工学-电气工程] 08[工学] 

基　　金：FIFTH European Commission 

主　　题：Channel coding digital TV diversity methods fading channels interleaved coding rail transportation communication satellite broadcasting satellite mobile communication time-varying channels TV broadcasting 

摘      要：This paper deals with the analysis of possible air interfaces to be employed in order to provide digital TV services to high speed trains via satellite. This turns out to be an extremely challenging issue, since in addition to traditional impairments characterizing the land mobile satellite channel, one has to face the presence of frequent tunnels, whose duration can easily reach several kilometers, and the presence of a variety of peculiar obstacles, such as electrical trellises and posts with and without brackets, which may result in frequent and deep fades. A large variety of possible solutions, based on standardized air interfaces with proper modifications, are analyzed by means of extensive software simulations, showing that effective solutions can be devised. Some consideration concerning the deployment of terrestrial gap-fillers to bridge the satellite connectivity inside long railway tunnels, large train station and within dense urban areas are also briefly addressed.