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| Presentation | 2013-04-18 13:00 Basic concept and Technology of Massive Antenna Systems for Wireless Entrance Links -- A proposal of a new approach for multi-user MIMO -- Atsushi Ohta, Kazuki Maruta, Satoshi Kurosaki, Takuto Arai, Masataka Iizuka (NTT)  RCS2013-5 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | For establishing 5G small cell base stations with massive MIMO technique, this paper discusses which communication scheme is suitable for high order spatial division multiplexing (SDM) in the condition that the propagation channel is mainly line of sight (LOS) and the aperture of a set of massive antennas is limited. In the previous paper, the authors have discussed the way for efficient use of degrees of freedom on massive antenna systems, and clarified that the 5G small cell base station should be located at high position like wall surface of the buildings. In this case, the propagation condition is mainly the line of sight (LOS) condition. In addition, massive MIMO systems assume that antenna elements are arrayed with small antenna spacing, and it results in the small aperture of a set of massive antennas. By the eigenvalue analysis for the MIMO channel matrix, however, the gap of the first and the second eigenvalues becomes quite large in such situations. This large gap brings small beam-forming gain for the second or much higher order eigenvalues and it is not effective for high order spatial division multiplexing In this paper, we propose the first eigen-mode parallel transmission scheme on which the base station employs multiple sub-arrays with large spacing and the sub-array only use the first eigen-mode transmission/reception. The computer simulations clarified its effectiveness in the situation. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Massive MIMO / 5G / Small Cell / irst Eigen-mode Parallel Transmission / LOS Channel / Millimeter Wave / / | |
| Reference Info. | IEICE Tech. Rep., vol. 113, no. 8, RCS2013-5, pp. 25-30, April 2013. | |
| Paper # | RCS2013-5 | |
| Date of Issue | 2013-04-11 (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 | RCS2013-5 |
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| Conference Information | |
| Committee | RCS |
| Conference Date | 2013-04-18 - 2013-04-19 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Ishigaki City Hall |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Radio Access Technologies, etc. |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2013-04-RCS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Basic concept and Technology of Massive Antenna Systems for Wireless Entrance Links |
| Sub Title (in English) | A proposal of a new approach for multi-user MIMO |
| Keyword(1) | Massive MIMO |
| Keyword(2) | 5G |
| Keyword(3) | Small Cell |
| Keyword(4) | irst Eigen-mode Parallel Transmission |
| Keyword(5) | LOS Channel |
| Keyword(6) | Millimeter Wave |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Atsushi Ohta |
| 1st Author's Affiliation | NTT Corporation (NTT) |
| 2nd Author's Name | Kazuki Maruta |
| 2nd Author's Affiliation | NTT Corporation (NTT) |
| 3rd Author's Name | Satoshi Kurosaki |
| 3rd Author's Affiliation | NTT Corporation (NTT) |
| 4th Author's Name | Takuto Arai |
| 4th Author's Affiliation | NTT Corporation (NTT) |
| 5th Author's Name | Masataka Iizuka |
| 5th Author's Affiliation | NTT Corporation (NTT) |
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| Speaker | Author-1 |
| Date Time | 2013-04-18 13:00:00 |
| Presentation Time | 25 minutes |
| Registration for | RCS |
| Paper # | RCS2013-5 |
| Volume (vol) | vol.113 |
| Number (no) | no.8 |
| Page | pp.25-30 |
| #Pages | 6 |
| Date of Issue | 2013-04-11 (RCS) |
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