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| Presentation | 2018-03-01 09:40 Considerations on a MIMO Channel Prediction Scheme Using Multipath Separation in Delay, Departure Angle, and Arrival Angle Domains Kanako Okumura, Yasutaka Ogawa, Toshihiko Nishimura, Takeo Ohgane (Hokkaido Univ.)  RCS2017-348 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In downlink multi-user MIMO transmission, channel state information is required for precoding at a base station. The channel state changes during the time interval between channel estimation and signal transmission due to terminal motion, etc., and this deteriorates communication quality. To reduce the effect of the time varying channels, if we estimate channels by transmitting pilot symbols frequently at short intervals, the transmission efficiency is lowered. To solve this problem, it is important to predict channels with high accuracy.In this paper, assuming broadband communication using a large linear antenna array at a base station and a circular antenna array at a terminal, we propose an SOS(sum-of-sinusoids) channel prediction scheme. The method separates multipath signals in three domains, which are delay, angle of departure and angle of arrival domains. We perform the inverse discrete Fourier transform in the frequency domain, spatial discrete Fourier transform using basestation antennas and spatial filtering using user equipment antennas. We predict the future multipath signals in the three domains. Applying the inverse transforms, we predict all the channels. In this paper, we show the performance of the proposed scheme for a two-multipath model and a WINNER II model, which is considered to be similar to a real environment. For both the cases, the proposed scheme improves the channel prediction performance. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | channel prediction / MIMO system / multipath / SOS method / impulse response / spatial discrete Fourier transform / / | |
| Reference Info. | IEICE Tech. Rep., vol. 117, no. 456, RCS2017-348, pp. 179-184, Feb. 2018. | |
| Paper # | RCS2017-348 | |
| Date of Issue | 2018-02-21 (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 | RCS2017-348 |
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| Conference Information | |
| Committee | RCS SR SRW |
| Conference Date | 2018-02-28 - 2018-03-02 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | YRP |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Mobile Communication Workshop |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2018-02-RCS-SR-SRW |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Considerations on a MIMO Channel Prediction Scheme Using Multipath Separation in Delay, Departure Angle, and Arrival Angle Domains |
| Sub Title (in English) | |
| Keyword(1) | channel prediction |
| Keyword(2) | MIMO system |
| Keyword(3) | multipath |
| Keyword(4) | SOS method |
| Keyword(5) | impulse response |
| Keyword(6) | spatial discrete Fourier transform |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Kanako Okumura |
| 1st Author's Affiliation | Hokkaido University (Hokkaido Univ.) |
| 2nd Author's Name | Yasutaka Ogawa |
| 2nd Author's Affiliation | Hokkaido University (Hokkaido Univ.) |
| 3rd Author's Name | Toshihiko Nishimura |
| 3rd Author's Affiliation | Hokkaido University (Hokkaido Univ.) |
| 4th Author's Name | Takeo Ohgane |
| 4th Author's Affiliation | Hokkaido University (Hokkaido Univ.) |
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| Speaker | Author-1 |
| Date Time | 2018-03-01 09:40:00 |
| Presentation Time | 20 minutes |
| Registration for | RCS |
| Paper # | RCS2017-348 |
| Volume (vol) | vol.117 |
| Number (no) | no.456 |
| Page | pp.179-184 |
| #Pages | 6 |
| Date of Issue | 2018-02-21 (RCS) |
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