| Presentation | 2003/2/28 Implementation of Dependable Video Conference System Using Convolutional Codes and Xcast Masayuki ARAI, Hitoshi KUROSU, Satoshi FUKUMOTO, Kazuhiko IWASAKI, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this paper we describe a dependable video conference system based on the two following techniques: packet loss recovery using convolutional codes, and Xcast. The packet recovery scheme used in the proposed system is an FEC scheme, and the redundant packets are generated by convolutional codes. Also, Xcast is one of multicast, and it can reduce the bandwidth required for a multi-point conference. We implement the proposed system based on the H. 323 system which is one of conventional video conference systems. After implementing the system, we tested functioning of the system over the Internet in a multi-point conference between three sites around Tokyo, and between Japan and Korea. We also investigated the effectiveness of the proposed system in experiments using an Internet simulator, and observed the improvement of the quality of the received pictures and bandwidth. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | video conference system / convolutional codes / H. 323 system, / Xcast / packet loss |
| Paper # | NS2002-268,IN2002-241 |
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| Conference Information | |
| Committee | IN |
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| Conference Date | 2003/2/28(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Information Networks (IN) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Implementation of Dependable Video Conference System Using Convolutional Codes and Xcast |
| Sub Title (in English) | |
| Keyword(1) | video conference system |
| Keyword(2) | convolutional codes |
| Keyword(3) | H. 323 system, |
| Keyword(4) | Xcast |
| Keyword(5) | packet loss |
| 1st Author's Name | Masayuki ARAI |
| 1st Author's Affiliation | Graduate School of Engineering, Tokyo Metropolitan University() |
| 2nd Author's Name | Hitoshi KUROSU |
| 2nd Author's Affiliation | Graduate School of Engineering, Tokyo Metropolitan University |
| 3rd Author's Name | Satoshi FUKUMOTO |
| 3rd Author's Affiliation | Graduate School of Engineering, Tokyo Metropolitan University |
| 4th Author's Name | Kazuhiko IWASAKI |
| 4th Author's Affiliation | Graduate School of Engineering, Tokyo Metropolitan University |
| Date | 2003/2/28 |
| Paper # | NS2002-268,IN2002-241 |
| Volume (vol) | vol.102 |
| Number (no) | 694 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |