| Presentation | 2012-06-21 Indoor Experiments on 4-by-2 MU-MIMO Considering Various Antenna Arrangements of Base Station in LTE-Advanced Downlink Yuichi Kakishima, Teruo Kawamura, Yoshihisa Kishiyama, Hidekazu Taoka, Hidehiro Andoh, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper presents indoor experimental results that consider a real propagation environment for 4-by-2 multi-user (MU)-MIMO that achieves up to 1-Gbps throughput using carrier aggregation with 5 component carriers (CCs), i.e., a 90-MHz bandwidth, in the LTE-Advanced downlink. The achievable throughput performance considering various transmitter antenna arrangements, i.e., localized and distributed antenna arrangements, is evaluated using the implemented LTE-Advanced transceiver, where extended channel state information (CSI) feedback based on eigenvalue decomposition (EVD) is implemented for MU-MIMO operation. The indoor experimental results show that the peak throughput exceeding 1 Gbps and average throughput of 920 Mbps are achieved by applying 4-by-2 Rank-4 MU-MIMO with 2 mobile stations in a centralized antenna arrangement. Furthermore, we confirm that, in a distributed antenna arrangement, although the peak throughput of 1 Gbps is not observed, a stable and relatively high throughput is expected. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | LTE-Advanced / OFDMA / multi-user MIMO / antenna arrangement / indoor experiment |
| Paper # | RCS2012-56 |
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| Committee | RCS |
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| Conference Date | 2012/6/14(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| 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) | Indoor Experiments on 4-by-2 MU-MIMO Considering Various Antenna Arrangements of Base Station in LTE-Advanced Downlink |
| Sub Title (in English) | |
| Keyword(1) | LTE-Advanced |
| Keyword(2) | OFDMA |
| Keyword(3) | multi-user MIMO |
| Keyword(4) | antenna arrangement |
| Keyword(5) | indoor experiment |
| 1st Author's Name | Yuichi Kakishima |
| 1st Author's Affiliation | Radio Access Network Development Department, NTT DOCOMO, INC.() |
| 2nd Author's Name | Teruo Kawamura |
| 2nd Author's Affiliation | Radio Access Network Development Department, NTT DOCOMO, INC. |
| 3rd Author's Name | Yoshihisa Kishiyama |
| 3rd Author's Affiliation | Radio Access Network Development Department, NTT DOCOMO, INC. |
| 4th Author's Name | Hidekazu Taoka |
| 4th Author's Affiliation | DOCOMO Communications Laboratories Europe, GmbH |
| 5th Author's Name | Hidehiro Andoh |
| 5th Author's Affiliation | Radio Access Network Development Department, NTT DOCOMO, INC. |
| Date | 2012-06-21 |
| Paper # | RCS2012-56 |
| Volume (vol) | vol.112 |
| Number (no) | 89 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |