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| Presentation | 2023-06-15 10:10 Investigation of PAPR Reduction Method Using Null Space in MIMO Channel for Massive MIMO-OFDM Signals with Uniform Planar Array Soma Taguchi (Tokyo Univ. of Science), Satoshi Suyama, Satoshi Nagata (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science)  RCS2023-51 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In this paper, we consider the application of our previously reported PCCNC (peak cancellation with channel-null constraint) method, in which the peak cancellation (PC) signal for peak-to-average power ratio (PAPR) reduction is transmitted only to the null space of the MIMO channel to avoid the interference at the receiver, to the massive/large-scale multiple-input multiple-output (MIMO)-orthogonal frequency division multiplexing (OFDM) with uniform planar array (UPA) antennas. In order to accommodate the large transmission signal power variation among antennas in UPA scenario, we propose a new PAPR reduction method based on PCCNC. First, the proposed method sufficiently reduces the PAPR at the antennas with large average transmission signal power by adding the PC signal without channel-null constraint. Then, a compensating signal that cancels the interference caused by the PC signal at the receiver is added to the transmit signal of antennas with small average signal power. Finally, PCCNC is processed for all transmitter antennas for removing the residual peak signals. Since the proposed method uses all the transmitter antennas for data transmission as in the conventional PCCNC, it is possible to obtain the maximum MIMO transmission gain, while the PAPR of antennas with large average transmit signal power can be suppressed more aggressively. By computer simulation, we show that the proposed method increases the throughput when using a nonlinear power amplifier with UPA compared to the conventional PCCNC and the method that does not use the null space of the MIMO channel. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | PAPR / MIMO / massive MIMO / OFDM / channel matrix / null space / uniform planar array / | |
| Reference Info. | IEICE Tech. Rep., vol. 123, no. 76, RCS2023-51, pp. 135-140, June 2023. | |
| Paper # | RCS2023-51 | |
| Date of Issue | 2023-06-07 (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 | RCS2023-51 |
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| Conference Information | |
| Committee | RCS |
| Conference Date | 2023-06-14 - 2023-06-16 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Hokkaido University, and 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 | 2023-06-RCS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Investigation of PAPR Reduction Method Using Null Space in MIMO Channel for Massive MIMO-OFDM Signals with Uniform Planar Array |
| Sub Title (in English) | |
| Keyword(1) | PAPR |
| Keyword(2) | MIMO |
| Keyword(3) | massive MIMO |
| Keyword(4) | OFDM |
| Keyword(5) | channel matrix |
| Keyword(6) | null space |
| Keyword(7) | uniform planar array |
| Keyword(8) | |
| 1st Author's Name | Soma Taguchi |
| 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 | 2023-06-15 10:10:00 |
| Presentation Time | 10 minutes |
| Registration for | RCS |
| Paper # | RCS2023-51 |
| Volume (vol) | vol.123 |
| Number (no) | no.76 |
| Page | pp.135-140 |
| #Pages | 6 |
| Date of Issue | 2023-06-07 (RCS) |
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