Real-time lecture delivery connecting distant classrooms by redundant network combining a high-speed satellite (WINDS) and a terrestrial line (JGN2plus)

Mitsuteru Nakamura, Keisuke Kameyama, Shin Takahashi, Yukio Fukui, Nobuhiko Kitawaki, Su Wei Tan, Yoshikazu Kamiya

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Abstract

This paper reports on the authors' attempts for realtime lecture delivery between Japan, Thailand and Malaysia using a redundant network consisting of a high-speed internet satellite (WINDS) and a terrestrial line (JGN2plus). The feasibility of multi-site real-time distant lecture system has been confirmed in several lecture delivery experiments. Also, the robustness of system has been proved by near automatic switching of long-distance routes from satellite to ground and back. This enables to compensate for the weakness of the satellite link using the Ka band in case of heavy rainfall. Additionally, quality improvement of video and audio with a high definition teleconference system has been confirmed by questionnaire surveys.

Original languageEnglish
Title of host publicationProceedings - 2012 IEEE 8th International Colloquium on Signal Processing and Its Applications, CSPA 2012
Pages367-372
Number of pages6
DOIs
Publication statusPublished - 2012
Externally publishedYes
EventIEEE International Colloquium on Signal Processing and its Applications 2012 - Melaka, Malaysia
Duration: 23 Mar 201225 Mar 2012
Conference number: 8th
https://ieeexplore.ieee.org/xpl/conhome/6190855/proceeding (Proceedings)

Conference

ConferenceIEEE International Colloquium on Signal Processing and its Applications 2012
Abbreviated titleCSPA 2012
Country/TerritoryMalaysia
CityMelaka
Period23/03/1225/03/12
Internet address

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