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| Presentation | 2023-07-13 13:00 PAPR Reduction Method Using Null Space in MIMO Channel for MIMO-OFDM Signals at Multiple-Antenna AF Relay Station Considering Direct Link Asuka Kakehashi (Tokyo Univ. of Science), Satoshi Suyama, Satoshi Nagata (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science)  RCS2023-91 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In this study, assuming downlink amplify-and-forward (AF)-type relaying of multiple-input multiple-output (MIMO)-orthogonal frequency division multiplexing (OFDM) signal, we propose a peak-to-average power ratio (PAPR) reduction method using null space in MIMO channel considering direct link between base station (BS) and user equipment (UE) as well as the relaying link via RS by only using the signal processing at the BS. The proposed method is realized by alternately repeating the generation of the signal that reduces the PAPR at the BS transmitter and the signal that reduces the PAPR at the RS transmitter, where both PAPR reduction signals are transmitted from the BS to the null space of the MIMO channel in both the relay and direct links which results in the reduced interference caused by the PAPR reduction signal to the data stream observed at the UE receiver. Based on the computer simulation assuming a nonlinear power amplifier, we show that the proposed method achieves better PAPR reduction performance at the BS and RS compared to the previous methods. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | PAPR / OFDM / MIMO / Null space / Relaying / Amplify-and-forward / / | |
| Reference Info. | IEICE Tech. Rep., vol. 123, no. 108, RCS2023-91, pp. 58-63, July 2023. | |
| Paper # | RCS2023-91 | |
| Date of Issue | 2023-07-05 (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 | RCS2023-91 |
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| Conference Information | |
| Committee | SeMI RCS RCC NS SR |
| Conference Date | 2023-07-12 - 2023-07-14 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Osaka University Nakanoshima Center + Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Distributed Wireless Network, M2M (Machine-to-Machine)，D2D (Device-to-Device)，IoT（Internet of Things）, etc |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2023-07-SeMI-RCS-RCC-NS-SR |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | PAPR Reduction Method Using Null Space in MIMO Channel for MIMO-OFDM Signals at Multiple-Antenna AF Relay Station Considering Direct Link |
| Sub Title (in English) | |
| Keyword(1) | PAPR |
| Keyword(2) | OFDM |
| Keyword(3) | MIMO |
| Keyword(4) | Null space |
| Keyword(5) | Relaying |
| Keyword(6) | Amplify-and-forward |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Asuka Kakehashi |
| 1st Author's Affiliation | Tokyo University of Science (Tokyo Univ. of Science) |
| 2nd Author's Name | Satoshi Suyama |
| 2nd Author's Affiliation | NTT DOCOMO, INC. (NTT DOCOMO) |
| 3rd Author's Name | Satoshi Nagata |
| 3rd Author's Affiliation | NTT DOCOMO, INC. (NTT DOCOMO) |
| 4th Author's Name | Kenichi Higuchi |
| 4th Author's Affiliation | Tokyo University of Science (Tokyo Univ. of Science) |
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| Speaker | Author-1 |
| Date Time | 2023-07-13 13:00:00 |
| Presentation Time | 25 minutes |
| Registration for | RCS |
| Paper # | RCS2023-91 |
| Volume (vol) | vol.123 |
| Number (no) | no.108 |
| Page | pp.58-63 |
| #Pages | 6 |
| Date of Issue | 2023-07-05 (RCS) |
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