| Presentation | 2014-01-23 System-Level Evaluation on Enhanced 4-Tx Codebook for LTE-Advanced Downlink Multi-User MIMO Yuichi Kakishima, Yang Song, Anass Benjebbour, Satoshi Nagata, Huiling Jiang, Yoshihisa Kishiyama, Takehiro Nakamura, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In LTE-Advanced downlink, multi-user (MU)-MIMO transmission is considered to be a promising technology to improve cell-average and cell-edge frequency efficiency. For MU-MIMO transmission, it is essential to adopt accurate precoding vector in order to efficiently reduce inter-user interference in the spatial domain. This paper proposes enhanced downlink codebook structure for 4-by-2 MU-MIMO transmission using dual-polarized antenna (DPA) considering the number of precoding matrix indicator (PMI) feedback bits. In the proposed codebook, inter-polarization amplitude information is fed back in addition to the inter- and intra-polarization phase information. Based on system-level simulation results, it is shown that the proposed codebook achieves maximum of 14% gain in terms of cell-average throughput compared to Rel. 8 codebook. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Multi-user MIMO / codebook / LTE-Advanced / downlink / system-level evaluation |
| Paper # | SIP2013-97,RCS2013-267 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2014/1/16(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Vice Chair | |
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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) | System-Level Evaluation on Enhanced 4-Tx Codebook for LTE-Advanced Downlink Multi-User MIMO |
| Sub Title (in English) | |
| Keyword(1) | Multi-user MIMO |
| Keyword(2) | codebook |
| Keyword(3) | LTE-Advanced |
| Keyword(4) | downlink |
| Keyword(5) | system-level evaluation |
| 1st Author's Name | Yuichi Kakishima |
| 1st Author's Affiliation | NTT DOCOMO, INC.() |
| 2nd Author's Name | Yang Song |
| 2nd Author's Affiliation | DOCOMO Beijing Communications Labs. |
| 3rd Author's Name | Anass Benjebbour |
| 3rd Author's Affiliation | NTT DOCOMO, INC. |
| 4th Author's Name | Satoshi Nagata |
| 4th Author's Affiliation | NTT DOCOMO, INC. |
| 5th Author's Name | Huiling Jiang |
| 5th Author's Affiliation | DOCOMO Beijing Communications Labs. |
| 6th Author's Name | Yoshihisa Kishiyama |
| 6th Author's Affiliation | NTT DOCOMO, INC. |
| 7th Author's Name | Takehiro Nakamura |
| 7th Author's Affiliation | NTT DOCOMO, INC. |
| Date | 2014-01-23 |
| Paper # | SIP2013-97,RCS2013-267 |
| Volume (vol) | vol.113 |
| Number (no) | 386 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |