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| Presentation | 2021-06-23 09:30 Considerations on computational complexity reduction in channel prediction based on multipath separation Daigo Mochizuki, Toshihiko Nishimura, Takeo Ohgane, Yasutaka Ogawa, Junichiro Hagiwara, Takanori Sato (Hokkaido Univ.)  RCS2021-29 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In multi-user MIMO systems, a base station suppresses inter-user-interferences using downlink channel state information (CSI) for each user and achieve high-data rate transmission. We need to send pilot symbols frequently to obtain CSI in time varying environments. Channel prediction, however, can reduce the frequency of pilot transmission. Among channel prediction schemes, we can expect that the sum-of-sinusoids (SOS) method which separates, predicts, and reconstructs multipath components expands the prediction range of channels. It has been proposed to realize SOS channel prediction using FISTA, a method of compressed sensing. We need, however, to apply FISTA twice in the prediction, which requires large computational complexity. In this paper, we propose SOS channel prediction that uses FISTA and the least-mean square method. The technique needs FISTA only once, and the computational complexity is much less than the conventional method. It is also shown that the proposed method achieves excellent channel prediction. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | channel prediction / multipath / SOS method / compressed sensing / FISTA / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 121, no. 72, RCS2021-29, pp. 1-6, June 2021. | |
| Paper # | RCS2021-29 | |
| Date of Issue | 2021-06-16 (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 | RCS2021-29 |
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| Conference Information | |
| Committee | RCS |
| Conference Date | 2021-06-23 - 2021-06-25 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | First Presentation in IEICE Technical Committee, Resource Control, Scheduling, Wireless Communications, etc. |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2021-06-RCS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Considerations on computational complexity reduction in channel prediction based on multipath separation |
| Sub Title (in English) | |
| Keyword(1) | channel prediction |
| Keyword(2) | multipath |
| Keyword(3) | SOS method |
| Keyword(4) | compressed sensing |
| Keyword(5) | FISTA |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Daigo Mochizuki |
| 1st Author's Affiliation | Hokkaido University (Hokkaido Univ.) |
| 2nd Author's Name | Toshihiko Nishimura |
| 2nd Author's Affiliation | Hokkaido University (Hokkaido Univ.) |
| 3rd Author's Name | Takeo Ohgane |
| 3rd Author's Affiliation | Hokkaido University (Hokkaido Univ.) |
| 4th Author's Name | Yasutaka Ogawa |
| 4th Author's Affiliation | Hokkaido University (Hokkaido Univ.) |
| 5th Author's Name | Junichiro Hagiwara |
| 5th Author's Affiliation | Hokkaido University (Hokkaido Univ.) |
| 6th Author's Name | Takanori Sato |
| 6th Author's Affiliation | Hokkaido University (Hokkaido Univ.) |
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| Speaker | Author-1 |
| Date Time | 2021-06-23 09:30:00 |
| Presentation Time | 10 minutes |
| Registration for | RCS |
| Paper # | RCS2021-29 |
| Volume (vol) | vol.121 |
| Number (no) | no.72 |
| Page | pp.1-6 |
| #Pages | 6 |
| Date of Issue | 2021-06-16 (RCS) |
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