| Presentation | 2008-03-07 Performance Comparison between Feedback and Feedback-less Method to obtain CSIT in Multi-user MIMO Precoding Keiichi MIZUTANI, Kei SAKAGUCHI, Kiyomichi ARAKI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this report, a performance comparison between feedback method and feedback-less method to obtain channel state information (CSI) is carried out in multi-user MIMO precoding system. In many MIMO precoding techniques, it is necessary to obtain the CSI in transmitter ahead of time. Two CSI obtaining techniques have been proposed. In feedback method, the estimated CSI at the receiver is fed back to the transmitter. On the other hand, feedback-less method has been proposed. In order to use the feedback-less method, channel reciprocity is required. However, the transmitter and receiver RF circuits must be calibrated to achieve channel reciprocity. In the feedback method, throughput performance deterioration is caused by the inaccuracy of the fed back CSI. It is expected that this deterioration of the throuhput performance is more severe in the case of multi-user MIMO than the case of single-user MIMO. This report shows the effectiveness of the feedback-less method to obtain the CSI in multi-user MIMO precoding system. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | single-user MIMO / multi-user MIMO / precoding / channel state information (CSI) / SVD-MIMO / Dirty Paper Coding / feedback / codebook / channel reciprocity / calibration |
| Paper # | RCS2007-242 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2008/2/27(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 Comparison between Feedback and Feedback-less Method to obtain CSIT in Multi-user MIMO Precoding |
| Sub Title (in English) | |
| Keyword(1) | single-user MIMO |
| Keyword(2) | multi-user MIMO |
| Keyword(3) | precoding |
| Keyword(4) | channel state information (CSI) |
| Keyword(5) | SVD-MIMO |
| Keyword(6) | Dirty Paper Coding |
| Keyword(7) | feedback |
| Keyword(8) | codebook |
| Keyword(9) | channel reciprocity |
| Keyword(10) | calibration |
| 1st Author's Name | Keiichi MIZUTANI |
| 1st Author's Affiliation | Guraduate School of Science and Engineering, Tokyo Institute of Technology() |
| 2nd Author's Name | Kei SAKAGUCHI |
| 2nd Author's Affiliation | Guraduate School of Science and Engineering, Tokyo Institute of Technology |
| 3rd Author's Name | Kiyomichi ARAKI |
| 3rd Author's Affiliation | Guraduate School of Science and Engineering, Tokyo Institute of Technology |
| Date | 2008-03-07 |
| Paper # | RCS2007-242 |
| Volume (vol) | vol.107 |
| Number (no) | 518 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |