| Presentation | 2007/2/1 Effectiveness of Polarization and Radiation Pattern Selection in Outdoor Multi-User MIMO System Naoki Honma, Riichi Kudo, Kentaro Nishimori, Yasushi Takatori, Atsushi Ohta, Shuji Kubota, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This report presents the experimental results of MU-MIMO(Multi-User Multi-Input Multi-Output) channel of an antenna with orthogonal patterns and polarizations in an outdoor urban area. The antenna configuration with orthogonal patterns and polarizations is useful in achieving a small terminal antenna since many antennas can be placed at the same position. The property of this antenna is compared with the antenna array, which has only a vertical or horizontal polarization in this environment. The measured results indicate that the antenna with orthogonal polarizations and patterns can always provide the fairly high SNR(Signal to Noise Ratio) property when 2 in 3 antennas are chosen. We verified the MU-MIMO transmission properties and found that the antenna only with a single polarization causes serious capacity deterioration when the antenna is inclined horizontally. On the contrary, the antenna, in which each element has different polarization or pattern to others, can provide the high channel capacity constantly even when the antenna is placed in any direction. The measured results indicated the effectiveness of the combination of the antenna selection and the use of the orthogonal antennas, which can enhance the channel capacity by 50% or less. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Multi-user / MIMO / polarization / directivity / spatial correlation / outdoor propagation / antenna selection |
| Paper # | A・P2006-141 |
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| Conference Information | |
| Committee | AP |
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| Conference Date | 2007/2/1(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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| Vice Chair | |
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| Paper Information | |
| Registration To | Antennas and Propagation (A・P) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Effectiveness of Polarization and Radiation Pattern Selection in Outdoor Multi-User MIMO System |
| Sub Title (in English) | |
| Keyword(1) | Multi-user |
| Keyword(2) | MIMO |
| Keyword(3) | polarization |
| Keyword(4) | directivity |
| Keyword(5) | spatial correlation |
| Keyword(6) | outdoor propagation |
| Keyword(7) | antenna selection |
| 1st Author's Name | Naoki Honma |
| 1st Author's Affiliation | NTT Network Innovation Laboratories, NTT Corporation() |
| 2nd Author's Name | Riichi Kudo |
| 2nd Author's Affiliation | NTT Network Innovation Laboratories, NTT Corporation |
| 3rd Author's Name | Kentaro Nishimori |
| 3rd Author's Affiliation | NTT Network Innovation Laboratories, NTT Corporation |
| 4th Author's Name | Yasushi Takatori |
| 4th Author's Affiliation | NTT Network Innovation Laboratories, NTT Corporation |
| 5th Author's Name | Atsushi Ohta |
| 5th Author's Affiliation | NTT Network Innovation Laboratories, NTT Corporation |
| 6th Author's Name | Shuji Kubota |
| 6th Author's Affiliation | NTT Network Innovation Laboratories, NTT Corporation |
| Date | 2007/2/1 |
| Paper # | A・P2006-141 |
| Volume (vol) | vol.106 |
| Number (no) | 527 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |