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| Presentation | 2014-01-23 15:15 System-Level Evaluation on Enhanced 4-Tx Codebook for LTE-Advanced Downlink Multi-User MIMO Yuichi Kakishima (NTT DOCOMO), Yang Song (DOCOMO Beijing Lab.), Anass Benjebbour, Satoshi Nagata (NTT DOCOMO), Huiling Jiang (DOCOMO Beijing Lab.), Yoshihisa Kishiyama, Takehiro Nakamura (NTT DOCOMO)  SIP2013-97 RCS2013-267 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (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) |
| (in English) | Multi-user MIMO / codebook / LTE-Advanced / downlink / system-level evaluation / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 113, no. 386, RCS2013-267, pp. 71-76, Jan. 2014. | |
| Paper # | RCS2013-267 | |
| Date of Issue | 2014-01-16 (SIP, RCS) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | SIP2013-97 RCS2013-267 |
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| Conference Information | |
| Committee | RCS SIP |
| Conference Date | 2014-01-23 - 2014-01-24 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kyushu Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Signal Processing for Wireless Systems, etc. |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2014-01-RCS-SIP |
| Language | Japanese |
| 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 |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Yuichi Kakishima |
| 1st Author's Affiliation | NTT DOCOMO, INC. (NTT DOCOMO) |
| 2nd Author's Name | Yang Song |
| 2nd Author's Affiliation | DOCOMO Beijing Communications Laboratories Co., Ltd. (DOCOMO Beijing Lab.) |
| 3rd Author's Name | Anass Benjebbour |
| 3rd Author's Affiliation | NTT DOCOMO, INC. (NTT DOCOMO) |
| 4th Author's Name | Satoshi Nagata |
| 4th Author's Affiliation | NTT DOCOMO, INC. (NTT DOCOMO) |
| 5th Author's Name | Huiling Jiang |
| 5th Author's Affiliation | DOCOMO Beijing Communications Laboratories Co., Ltd. (DOCOMO Beijing Lab.) |
| 6th Author's Name | Yoshihisa Kishiyama |
| 6th Author's Affiliation | NTT DOCOMO, INC. (NTT DOCOMO) |
| 7th Author's Name | Takehiro Nakamura |
| 7th Author's Affiliation | NTT DOCOMO, INC. (NTT DOCOMO) |
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| Speaker | Author-1 |
| Date Time | 2014-01-23 15:15:00 |
| Presentation Time | 25 minutes |
| Registration for | RCS |
| Paper # | SIP2013-97, RCS2013-267 |
| Volume (vol) | vol.113 |
| Number (no) | no.385(SIP), no.386(RCS) |
| Page | pp.71-76 |
| #Pages | 6 |
| Date of Issue | 2014-01-16 (SIP, RCS) |
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