| Presentation | 2012-05-18 User scheduling in MU-MIMO system considering codebook design and interference among users Ikuma ANDO, Gia Khanh Tran, Kei SAKAGUCHI, Kiyomichi ARAKI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Recently, multiuser MIMO communication system has attracted much attention because of their potential for increasing radio resource efficiency. Moreover, the system can provide high performance by selecting users based on their information such as channel state information(CSI) and average signal to noise power ratio called user scheduling. However, most of conventional works assume perfect CSI at the base station. In this paper, we focus on a more practical scenario where base station knows only imperfect CSI by using quantization codebook. We modify the conventional user scheduling algorithm for block diagonalization(BD) such that the modified algorithm selects users by considering the imperfect CSI, the average SINR, and the quantization error of users. In addition, we modify the conventional codebook to a new codebook which considers antenna correlation to decrease interference among users. Numerical analysis shows system capacity is improved by using the proposed user scheduling method and codebook. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | multiuser MIMO / antenna correlation / quantization error / codebook / user scheduling |
| Paper # | RCS2012-32 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2012/5/10(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Radio Communication Systems (RCS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | User scheduling in MU-MIMO system considering codebook design and interference among users |
| Sub Title (in English) | |
| Keyword(1) | multiuser MIMO |
| Keyword(2) | antenna correlation |
| Keyword(3) | quantization error |
| Keyword(4) | codebook |
| Keyword(5) | user scheduling |
| 1st Author's Name | Ikuma ANDO |
| 1st Author's Affiliation | Tokyo Institute of Technology() |
| 2nd Author's Name | Gia Khanh Tran |
| 2nd Author's Affiliation | Tokyo Institute of Technology |
| 3rd Author's Name | Kei SAKAGUCHI |
| 3rd Author's Affiliation | Tokyo Institute of Technology |
| 4th Author's Name | Kiyomichi ARAKI |
| 4th Author's Affiliation | Tokyo Institute of Technology |
| Date | 2012-05-18 |
| Paper # | RCS2012-32 |
| Volume (vol) | vol.112 |
| Number (no) | 29 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |