| Presentation | 2011-07-21 Performance Evaluation on Tracking Ability of CSI Feedback for MU-MIMO Transmission using Real-time Baseband Signal Processor for LTE-Advanced Downlink Yuichi Kakishima, Kazuaki Takeda, Teruo Kawamura, Yoshihisa Kishiyama, Hidekazu Taoka, Hidehiro Andoh, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper presents laboratory experimental results on 4-by-2 multi-user (MU)-MIMO multiplexing with two mobile stations (MSs) in the LTE-Advanced downlink. Extended channel state information (CSI) feedback functionality based on eigenvalue decomposition (EVD) is implemented into real-time baseband experimental equipment based on the LTE-Advanced radio interface to support MU-MIMO operations applying minimum mean square error (MMSE)-based precoding. The laboratory experiments were conducted assuming a multi-path fading environment based on different antenna configurations. The experimental results show that the 4-by-2 MU-MIMO with two data streams per MS achieves the peak throughput of greater than 1 Gbps in a correlated antenna configuration scenario assuming cross-polarized transmitter antennas when the maximum Doppler frequency of 10 Hz and the root mean squared delay spread with 0.3 μsec. The results also show that, high throughput performance such as greater than 800 Mbps for 4-by-2 MU-MIMO with two data streams per MS is observed even in a non-correlated antenna configuration scenario although the environment is limited to low mobility and a small delay spread. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | LTE-Advanced / OFDMA / multi-user MIMO / CSI feedback |
| Paper # | RCS2011-79 |
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| Committee | RCS |
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| Conference Date | 2011/7/14(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| 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) | Performance Evaluation on Tracking Ability of CSI Feedback for MU-MIMO Transmission using Real-time Baseband Signal Processor for LTE-Advanced Downlink |
| Sub Title (in English) | |
| Keyword(1) | LTE-Advanced |
| Keyword(2) | OFDMA |
| Keyword(3) | multi-user MIMO |
| Keyword(4) | CSI feedback |
| 1st Author's Name | Yuichi Kakishima |
| 1st Author's Affiliation | Radio Access Network Development Department, NTT DOCOMO, INC.() |
| 2nd Author's Name | Kazuaki Takeda |
| 2nd Author's Affiliation | Radio Access Network Development Department, NTT DOCOMO, INC. |
| 3rd Author's Name | Teruo Kawamura |
| 3rd Author's Affiliation | Radio Access Network Development Department, NTT DOCOMO, INC. |
| 4th Author's Name | Yoshihisa Kishiyama |
| 4th Author's Affiliation | Radio Access Network Development Department, NTT DOCOMO, INC. |
| 5th Author's Name | Hidekazu Taoka |
| 5th Author's Affiliation | DOCOMO Communications Laboratories Europe, GmbH |
| 6th Author's Name | Hidehiro Andoh |
| 6th Author's Affiliation | Radio Access Network Development Department, NTT DOCOMO, INC. |
| Date | 2011-07-21 |
| Paper # | RCS2011-79 |
| Volume (vol) | vol.111 |
| Number (no) | 145 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |