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| Presentation | 2021-10-21 10:25 Performance Evaluation of Scalable Cell-Free Massive MIMO Systems with Multiple CPUs Subject to Backhaul Capacity Limitation Masaaki Ito, Issei Kanno, Kosuke Yamazaki (KDDI Research), Kengo Ando, Shuto Fukue (UEC), Hiroki Iimori (JUB), Koji Ishibashi (UEC)  RCS2021-119 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Cell-free massive multiple-input multiple-output (CF-mMIMO) systems have attracted attention worldwide, being considered as one of the key technologies for the sixth generation wireless communication systems. Although CF-mMIMO systems ideally gather incoming signals received at access points (APs) at a common central processing unit (CPU), this may suffer from overloaded signal processing as the service area expands, implying the need of inter-CPU cooperation among multiple CPUs for load balancing. In this case, one of the non-negligible issues of inter-CPU cooperation is the quantization error due to the limited backhaul links utilized to exchange information among them. In this paper, we evaluate the system performance of CF-mMIMO systems composed of multiple CPUs, revealing the superiority of the latter in comparison with cellular distributed MIMO counterparts, in which each CPU operates independently. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | 6G / cell-free massive MIMO / multiple CPUs / distributed MIMO / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 121, no. 210, RCS2021-119, pp. 7-12, Oct. 2021. | |
| Paper # | RCS2021-119 | |
| Date of Issue | 2021-10-14 (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 | RCS2021-119 |
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| Conference Information | |
| Committee | RCS |
| Conference Date | 2021-10-21 - 2021-10-22 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Wireless Communication Schemes, Wireless Communication Systems, Wireless Standards, Future Wireless Systems, etc. |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2021-10-RCS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Performance Evaluation of Scalable Cell-Free Massive MIMO Systems with Multiple CPUs Subject to Backhaul Capacity Limitation |
| Sub Title (in English) | |
| Keyword(1) | 6G |
| Keyword(2) | cell-free massive MIMO |
| Keyword(3) | multiple CPUs |
| Keyword(4) | distributed MIMO |
| Keyword(5) | |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Masaaki Ito |
| 1st Author's Affiliation | KDDI Research, Inc. (KDDI Research) |
| 2nd Author's Name | Issei Kanno |
| 2nd Author's Affiliation | KDDI Research, Inc. (KDDI Research) |
| 3rd Author's Name | Kosuke Yamazaki |
| 3rd Author's Affiliation | KDDI Research, Inc. (KDDI Research) |
| 4th Author's Name | Kengo Ando |
| 4th Author's Affiliation | The University of Electro-Communications (UEC) |
| 5th Author's Name | Shuto Fukue |
| 5th Author's Affiliation | The University of Electro-Communications (UEC) |
| 6th Author's Name | Hiroki Iimori |
| 6th Author's Affiliation | Jacobs University Bremen (JUB) |
| 7th Author's Name | Koji Ishibashi |
| 7th Author's Affiliation | The University of Electro-Communications (UEC) |
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| Speaker | Author-1 |
| Date Time | 2021-10-21 10:25:00 |
| Presentation Time | 25 minutes |
| Registration for | RCS |
| Paper # | RCS2021-119 |
| Volume (vol) | vol.121 |
| Number (no) | no.210 |
| Page | pp.7-12 |
| #Pages | 6 |
| Date of Issue | 2021-10-14 (RCS) |
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