| Presentation | 2006/10/12 Multi-user Selection Method for MU-MIMO Systems in Downlink Transmission Riichi KUDO, Yasushi TAKATORI, Ohta Atsushi, Kentaro NISHIMORI, Shuji KUBOTA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The multiple input multiple output (MIMO) technique enables the application of spatial multiplexing as a way of increasing the spectrum efficiency. However, only a few antenna branches are allowed at a simple mobile terminal (MT) and the MIMO effect is limited for those MTs. Multiuser (MU)-MIMO technique was proposed to support such simple terminals to overcome such problems. In MU-MIMO systems, antennas at all MTs are considered as a large virtual array antenna so a large spectrum efficiency improvement is expected. Since the improvement in the spectrum efficiency greatly depends on the combination of spatially multiplexed users, a simple multiuser selection method is needed. In this paper, we propose a new capacity estimation method for MU-MIMO systems to reduce the calculation complexity. The proposed method estimates the increase of the achievable bit rate in MU-MIMO compared to that in SU-MIMO with less than tenth of the calculation load of the direct estimation in the block diagonalization algorithm. Theoretical analysis and the simulation results confirm the effectiveness of the proposed method. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | MIMO / SDM / Eigenvector / OFDM / Orthogonalization / Asymmetric MIMO |
| Paper # | A・P2006-87 |
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| Conference Information | |
| Committee | AP |
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| Conference Date | 2006/10/12(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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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) | Multi-user Selection Method for MU-MIMO Systems in Downlink Transmission |
| Sub Title (in English) | |
| Keyword(1) | MIMO |
| Keyword(2) | SDM |
| Keyword(3) | Eigenvector |
| Keyword(4) | OFDM |
| Keyword(5) | Orthogonalization |
| Keyword(6) | Asymmetric MIMO |
| 1st Author's Name | Riichi KUDO |
| 1st Author's Affiliation | NTT Network Innovation Laboratories, NTT Corporation() |
| 2nd Author's Name | Yasushi TAKATORI |
| 2nd Author's Affiliation | NTT Network Innovation Laboratories, NTT Corporation |
| 3rd Author's Name | Ohta Atsushi |
| 3rd Author's Affiliation | NTT Network Innovation Laboratories, NTT Corporation |
| 4th Author's Name | Kentaro NISHIMORI |
| 4th Author's Affiliation | NTT Network Innovation Laboratories, NTT Corporation |
| 5th Author's Name | Shuji KUBOTA |
| 5th Author's Affiliation | NTT Network Innovation Laboratories, NTT Corporation |
| Date | 2006/10/12 |
| Paper # | A・P2006-87 |
| Volume (vol) | vol.106 |
| Number (no) | 302 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |