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| Presentation | 2023-03-01 11:15 Performance Improvement of Linear MIMO Reception over Time-Variant Channels Using Null-Space Expansion Yuki Ohi, Hidekazu Murata (Yamaguchi Univ.), Makoto Taromaru (Hukuoka Univ.), Tatsuhiko Iwakuni, Daisei Uchida, Naoki Kita (NTT)  RCS2022-250 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | This paper considers the improvement of MIMO signal separation performance using a linear spatial filter in a time-varying channel such as in a mobile environment. The transmission performance deteriorates due to the movement of the receiving station if the combining weight that suppresses interference signals in a packet during linear signal separation is kept fixed. In this paper, the null-space expansion method is applied to suppress such degradation. This method improves the robustness against time-varying channel by additionally forming nulls that suppress inter-user interference by utilizing the antenna degrees of freedom. The robustness against intra-packet channel fluctuation by computer simulation is evaluated and the improvement of error rate performance is reported. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | time-variant channel / null-space expansion / liner reception / MIMO / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 122, no. 399, RCS2022-250, pp. 21-24, March 2023. | |
| Paper # | RCS2022-250 | |
| Date of Issue | 2023-02-22 (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 | RCS2022-250 |
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| Conference Information | |
| Committee | RCS SR SRW |
| Conference Date | 2023-03-01 - 2023-03-03 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tokyo Institute of Technology, and Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Mobile Communication Workshop |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2023-03-RCS-SR-SRW |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Performance Improvement of Linear MIMO Reception over Time-Variant Channels Using Null-Space Expansion |
| Sub Title (in English) | |
| Keyword(1) | time-variant channel |
| Keyword(2) | null-space expansion |
| Keyword(3) | liner reception |
| Keyword(4) | MIMO |
| Keyword(5) | |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Yuki Ohi |
| 1st Author's Affiliation | Yamaguchi University (Yamaguchi Univ.) |
| 2nd Author's Name | Hidekazu Murata |
| 2nd Author's Affiliation | Yamaguchi University (Yamaguchi Univ.) |
| 3rd Author's Name | Makoto Taromaru |
| 3rd Author's Affiliation | Hukuoka University (Hukuoka Univ.) |
| 4th Author's Name | Tatsuhiko Iwakuni |
| 4th Author's Affiliation | Nippon Telegraph and Telephone Corporation (NTT) |
| 5th Author's Name | Daisei Uchida |
| 5th Author's Affiliation | Nippon Telegraph and Telephone Corporation (NTT) |
| 6th Author's Name | Naoki Kita |
| 6th Author's Affiliation | Nippon Telegraph and Telephone Corporation (NTT) |
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| Speaker | Author-1 |
| Date Time | 2023-03-01 11:15:00 |
| Presentation Time | 25 minutes |
| Registration for | RCS |
| Paper # | RCS2022-250 |
| Volume (vol) | vol.122 |
| Number (no) | no.399 |
| Page | pp.21-24 |
| #Pages | 4 |
| Date of Issue | 2023-02-22 (RCS) |
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