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| Presentation | 2011-07-21 10:45 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 (NTT DOCOMO), Hidekazu Taoka (DOCOMO Euro Lab), Hidehiro Andoh (NTT DOCOMO)  RCS2011-79 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (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 msec. 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 noncorrelated antenna configuration scenario although the environment is limited to low mobility and a small delay spread. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | LTE-Advanced / OFDMA / multi-user MIMO / CSI feedback / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 111, no. 145, RCS2011-79, pp. 25-30, July 2011. | |
| Paper # | RCS2011-79 | |
| Date of Issue | 2011-07-14 (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 | RCS2011-79 |
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| Conference Information | |
| Committee | RCS NS |
| Conference Date | 2011-07-21 - 2011-07-22 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Asahikawa Civic Culture Hall |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Fixed/Wireless Network, Hand Over, Relay, Distributed MIMO, Mobile Ad-hoc Network, etc. |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2011-07-RCS-NS |
| Language | Japanese |
| 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 |
| Keyword(5) | |
| 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 | Kazuaki Takeda |
| 2nd Author's Affiliation | NTT DOCOMO, INC. (NTT DOCOMO) |
| 3rd Author's Name | Teruo Kawamura |
| 3rd Author's Affiliation | NTT DOCOMO, INC. (NTT DOCOMO) |
| 4th Author's Name | Yoshihisa Kishiyama |
| 4th Author's Affiliation | NTT DOCOMO, INC. (NTT DOCOMO) |
| 5th Author's Name | Hidekazu Taoka |
| 5th Author's Affiliation | DOCOMO Communications Laboratories Europe GmbH (DOCOMO Euro Lab) |
| 6th Author's Name | Hidehiro Andoh |
| 6th Author's Affiliation | NTT DOCOMO, INC. (NTT DOCOMO) |
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| Speaker | Author-1 |
| Date Time | 2011-07-21 10:45:00 |
| Presentation Time | 20 minutes |
| Registration for | RCS |
| Paper # | RCS2011-79 |
| Volume (vol) | vol.111 |
| Number (no) | no.145 |
| Page | pp.25-30 |
| #Pages | 6 |
| Date of Issue | 2011-07-14 (RCS) |
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