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학술대회 Link Layer Coding for DVB-S2 Interactive Satellite Services to Trains
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Balazs Matuz, Gianluigi Liva, Cristina Parraga Niebla, Nuria Riera Diaz, Sandro Scalise, 김판수, 장대익, 이호진
Vehicular Technology Conference (VTC) 2008 (Spring), pp.2922-2926
08MR2800, 고속 이동체 인터넷 위성 무선 연동 기술개발, 이호진
The railroad satellite channel is characterized by frequent signal outages due to tunnels, bridges and electrical trellises. While for medium/long tunnels the main option to offer reliable and uninterrupted connectivity deals with the adoption of gap-filling techniques, signal outages due to small bridges/tunnels or electrical trellises can be faced with ad-hoc recovery techniques. In this paper, we face the problem from a link layer perspective, showing how a proper design of an erasure correcting code operating at link layer represents a valuable countermeasure against short outage events. The performance evaluation is developed in comparison with a more traditional technique based on physical layer coding in combination with a long channel interleaver. Advantages of the link layer coding scheme will be shown. ©2008 IEEE.
KSP 제안 키워드
Ad hoc, DVB-S2, Link layer, Long channel, Performance evaluation, Physical Layer, Satellite channel, coding scheme, erasure correcting code, gap filling, long tunnels