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| Presentation | 2021-06-24 10:00 Reduction of Out-of-Band Radiation with Quantized Precoding using Gibbs Sampling in Massive MU-MIMO-OFDM Taichi Yamakado, Riki Okawa, Yukithoshi Sanada (Keio Univ.)  RCS2021-49 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In this paper, a non-linear precoding algorithm with low out-of-band (OOB) radiation in a Massive multiple-input multiple-output (MIMO) system is proposed. Full digital Massive MIMO may require lower resolution in digital-to-analogue converters (DACs) since each DAC consumes a large amount of power. In Massive MIMO systems with low resolution DACs, an output signal designed by nonlinear processing has been investigated. The conventional scheme focuses only on a sum rate or errors in received signals and causes large OOB radiation. This paper proposes an optimization criterion that takes OOB radiation power into account. Gibbs sampling is used as an algorithm to find for a sub-optimal solution for this criterion. Numerical results obtained through computer simulation show that the proposed criterion reduces mean OOB radiation power by a factor of 10 as compared with the conventional criteria. Furthermore, the proposed criterion achieves approximately 1.3 times larger performance in the average sum rate than an error based criterion. On the other hand, as compared with a sum rate based criterion, the throughput on each subcarrier shows less variation and that demands a smaller number of link adaptation options although the average sum rate of the proposed criterion is smaller. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Massive MIMO / Low Resolution DACs / Gibbs Sampling / Non-Linear Precoding / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 121, no. 72, RCS2021-49, pp. 121-126, June 2021. | |
| Paper # | RCS2021-49 | |
| 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 | RCS2021-49 |
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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) | Reduction of Out-of-Band Radiation with Quantized Precoding using Gibbs Sampling in Massive MU-MIMO-OFDM |
| Sub Title (in English) | |
| Keyword(1) | Massive MIMO |
| Keyword(2) | Low Resolution DACs |
| Keyword(3) | Gibbs Sampling |
| Keyword(4) | Non-Linear Precoding |
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| Keyword(6) | |
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| Keyword(8) | |
| 1st Author's Name | Taichi Yamakado |
| 1st Author's Affiliation | Keio University (Keio Univ.) |
| 2nd Author's Name | Riki Okawa |
| 2nd Author's Affiliation | Keio University (Keio Univ.) |
| 3rd Author's Name | Yukithoshi Sanada |
| 3rd Author's Affiliation | Keio University (Keio Univ.) |
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| Speaker | Author-1 |
| Date Time | 2021-06-24 10:00:00 |
| Presentation Time | 10 minutes |
| Registration for | RCS |
| Paper # | RCS2021-49 |
| Volume (vol) | vol.121 |
| Number (no) | no.72 |
| Page | pp.121-126 |
| #Pages | 6 |
| Date of Issue | 2021-06-16 (RCS) |
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