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| Presentation | 2021-01-22 16:45 Theoretical Study of User-wise Joint Transmit-receive Diversity for Multi-user MIMO Communication Fumiyuki Adachi, Ryou Takahashi (Tohoku Univ.)  IT2020-100 SIP2020-78 RCS2020-191 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Multi-user MIMO spatial multiplexing has been recognized as an indispensable technique to significantly improve the spectrum efficiency. On the other hand, spatial diversity has long been recognized an indispensable technique to mitigate the multipath fading effect and to improve the signal transmission quality. Recently, we introduced user-wise joint transmit-receive diversity (JTRD) into multi-user MIMO spatial multiplexing and then confirmed its effectiveness in a fading environment. In this report, we provide the theoretical basis of multi-user MIMO coordinated with user-wise JTRD. A set of user-wise JTRD weight vectors at base station (BS) and each user can be determined by solving an eigenvalue equation constructed of single-user MIMO channel associated with each user. There are two types of user-wise JTRD by which side (BS or user) solves an eigenvalue equation to determine the JTRD weight vector. Their features are shown. The link capacity achievable by multi-user MIMO coordinated with user-wise JTRD is analyzed to show that the downlink capacity is equal to the uplink capacity when user-wise downlink transmit power constraint is used. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Multi-user MIMO / joint transmit-receive diversity / zero-forcing / / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 120, no. 322, RCS2020-191, pp. 206-211, Jan. 2021. | |
| Paper # | RCS2020-191 | |
| Date of Issue | 2021-01-14 (IT, SIP, RCS) | |
| ISSN | 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 | IT2020-100 SIP2020-78 RCS2020-191 |
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| Conference Information | |
| Committee | SIP IT RCS |
| Conference Date | 2021-01-21 - 2021-01-22 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2021-01-SIP-IT-RCS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Theoretical Study of User-wise Joint Transmit-receive Diversity for Multi-user MIMO Communication |
| Sub Title (in English) | |
| Keyword(1) | Multi-user MIMO |
| Keyword(2) | joint transmit-receive diversity |
| Keyword(3) | zero-forcing |
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| 1st Author's Name | Fumiyuki Adachi |
| 1st Author's Affiliation | Tohoku University (Tohoku Univ.) |
| 2nd Author's Name | Ryou Takahashi |
| 2nd Author's Affiliation | Tohoku University (Tohoku Univ.) |
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| Speaker | Author-1 |
| Date Time | 2021-01-22 16:45:00 |
| Presentation Time | 25 minutes |
| Registration for | RCS |
| Paper # | IT2020-100, SIP2020-78, RCS2020-191 |
| Volume (vol) | vol.120 |
| Number (no) | no.320(IT), no.321(SIP), no.322(RCS) |
| Page | pp.206-211 |
| #Pages | 6 |
| Date of Issue | 2021-01-14 (IT, SIP, RCS) |
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