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| Presentation | 2009-01-22 13:40 A Study on Cell-Edge Throughput Improvement Based on MIMO Coordinated Base Stations for Downlink Transmission in OFDM Systems Manabu Mikami, Atsushi Nagate, Kenji Hoshino, Teruya Fujii (Softbank Mobile)  SIP2008-131 RCS2008-179 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | MIMO-OFDM is attracting attention as the wireless access technology for the next-generation mobile radio systems. In order to improve both the cell-edge throughput and the system throughput for MIMO-OFDM cellular systems without the bandwidth expansion, the authors are studying ECO-MIMO (Enhanced COoperative MIMO) system, in which the multiple BSs (Base Stations) coordinate the MIMO transmission scheme, and ECO-OFDM (Enhanced COoperative OFDM) system, in which the multiple BSs coordinate to control radio resource allocation to each user. This paper focuses on downlink cooperative MIMO transmission based on multiple base station (BS) coordination in order to improve the transmission performance of cell-edge users in MIMO-OFDM cellular systems. We study a cooperative MIMO transmission with Double Space Time block coding based Transmit Diversity (D-STTD) technique and evaluate its performance with consideration of the frequency offset difference between the local oscillators in the coordinated BSs. We confirm that it improves user throughput performance of the downlink at the cell edge. Moreover, we introduce the Per Site Rate Control (PSRC) technique, in which each BS independently controls its modulation level; we clarify that the PSRC technique is effective, especially when there is a significant difference in the average received power of the signals transmitted from the coordinated BSs. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | MIMO-OFDM / Coordinated Base Stations / Cell-edge Throughput / Per Site Rate Control / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 108, no. 391, RCS2008-179, pp. 41-46, Jan. 2009. | |
| Paper # | RCS2008-179 | |
| Date of Issue | 2009-01-15 (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 | SIP2008-131 RCS2008-179 |
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| Conference Information | |
| Committee | SIP RCS |
| Conference Date | 2009-01-22 - 2009-01-23 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kumamoto University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2009-01-SIP-RCS |
| Language | English (Japanese title is available) |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study on Cell-Edge Throughput Improvement Based on MIMO Coordinated Base Stations for Downlink Transmission in OFDM Systems |
| Sub Title (in English) | |
| Keyword(1) | MIMO-OFDM |
| Keyword(2) | Coordinated Base Stations |
| Keyword(3) | Cell-edge Throughput |
| Keyword(4) | Per Site Rate Control |
| Keyword(5) | |
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| Keyword(8) | |
| 1st Author's Name | Manabu Mikami |
| 1st Author's Affiliation | Softbank Mobile (Softbank Mobile) |
| 2nd Author's Name | Atsushi Nagate |
| 2nd Author's Affiliation | Softbank Mobile (Softbank Mobile) |
| 3rd Author's Name | Kenji Hoshino |
| 3rd Author's Affiliation | Softbank Mobile (Softbank Mobile) |
| 4th Author's Name | Teruya Fujii |
| 4th Author's Affiliation | Softbank Mobile (Softbank Mobile) |
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| Speaker | Author-1 |
| Date Time | 2009-01-22 13:40:00 |
| Presentation Time | 25 minutes |
| Registration for | RCS |
| Paper # | SIP2008-131, RCS2008-179 |
| Volume (vol) | vol.108 |
| Number (no) | no.390(SIP), no.391(RCS) |
| Page | pp.41-46 |
| #Pages | 6 |
| Date of Issue | 2009-01-15 (SIP, RCS) |
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