| Presentation | 2007-01-25 Channel Quality Improvement Method based on Relative Mobility Speed in High-speed Mobile Environment Takayuki YAMADA, Ryoichi SHINKUMA, Tatsuro TAKAHASHI, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The demand for multimedia services and Internet access in vehicles has been growing with the spread of intelligent transport systems (ITS). To access the infrastructure network from vehicles, a wireless road-vehicle communication system is necessary. In conventional road-vehicle communication systems, user terminals in the vehicles have to directly connect to wireless access points (APs). However, the speed of vehicles is so fast that the channel condition between the terminals and the APs constantly changes due to changing path-loss and time-varying fading. In this paper, we used an inter-vehicle packet relay technique to improve channel quality in road-vehicle communication systems. If a terminal can send data via other vehicles moving at lower speed, the relative speed will decrease, which suppresses the dynamic range of path loss and deterioration by fading. We evaluated this method using numerical analysis and computer simulation to validate the proposed method. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | ITS / road-vehicle communication / inter-vehicle communication / relative speed / Doppler shift |
| Paper # | MoMuC2006-70 |
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| Conference Information | |
| Committee | MoMuC |
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| Conference Date | 2007/1/18(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Mobile Multimedia Communications(MoMuC) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Channel Quality Improvement Method based on Relative Mobility Speed in High-speed Mobile Environment |
| Sub Title (in English) | |
| Keyword(1) | ITS |
| Keyword(2) | road-vehicle communication |
| Keyword(3) | inter-vehicle communication |
| Keyword(4) | relative speed |
| Keyword(5) | Doppler shift |
| 1st Author's Name | Takayuki YAMADA |
| 1st Author's Affiliation | Communications and Computer Engineering, Graduate School of Informatics, Kyoto University() |
| 2nd Author's Name | Ryoichi SHINKUMA |
| 2nd Author's Affiliation | Communications and Computer Engineering, Graduate School of Informatics, Kyoto University |
| 3rd Author's Name | Tatsuro TAKAHASHI |
| 3rd Author's Affiliation | Communications and Computer Engineering, Graduate School of Informatics, Kyoto University |
| Date | 2007-01-25 |
| Paper # | MoMuC2006-70 |
| Volume (vol) | vol.106 |
| Number (no) | 498 |
| Page | pp.pp.- |
| #Pages | 4 |
| Date of Issue | |