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| Paper Abstract and Keywords | ||
| Presentation | 2019-11-20 13:35 A Study on Low-Complexity Data Detection for Grant-Free Non-Orthogonal Multiple Access Takanori Hara, Koji Ishibashi (The Univ. of Electro-Communications)  RCS2019-211 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | As a scheme to accommodate a large number of users efficiently, the grant-free non-orthogonal multiple access (GF-NOMA) based on boosted approximate message passing (Boosted AMP), has been proposed. This scheme converts the original reconstruction problem into the smaller sized one by multiplying random matrices and perform the channel estimation (CE) and date detection via minimum mean-squared error (MMSE) estimation after the active user detection (AUD). However, the performance degrades owing to the problem conversion, and the computational complexity of MMSE estimation is still high. In this paper, we propose the modified problem conversion to perform AUD and CE jointly and reduce the complexity of data detection by exploiting the conjugate gradient method. Furthermore, we show that our proposal can attain superior performance than the conventional scheme by modifying the threshold for AUD, while its computational complexity decreases. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Grant-free non-orthogonal multiple access / data detection / compressed sensing / approximate message passing / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 119, no. 296, RCS2019-211, pp. 49-54, Nov. 2019. | |
| Paper # | RCS2019-211 | |
| Date of Issue | 2019-11-13 (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 | RCS2019-211 |
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| Conference Information | |
| Committee | AP RCS |
| Conference Date | 2019-11-20 - 2019-11-22 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Saga Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Adaptive Antenna, Equalization, Interference Canceler, MIMO, Wireless Communications, etc. |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2019-11-AP-RCS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study on Low-Complexity Data Detection for Grant-Free Non-Orthogonal Multiple Access |
| Sub Title (in English) | |
| Keyword(1) | Grant-free non-orthogonal multiple access |
| Keyword(2) | data detection |
| Keyword(3) | compressed sensing |
| Keyword(4) | approximate message passing |
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| 1st Author's Name | Takanori Hara |
| 1st Author's Affiliation | The University of Electro-Communications (The Univ. of Electro-Communications) |
| 2nd Author's Name | Koji Ishibashi |
| 2nd Author's Affiliation | The University of Electro-Communications (The Univ. of Electro-Communications) |
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| Speaker | Author-1 |
| Date Time | 2019-11-20 13:35:00 |
| Presentation Time | 25 minutes |
| Registration for | RCS |
| Paper # | RCS2019-211 |
| Volume (vol) | vol.119 |
| Number (no) | no.296 |
| Page | pp.49-54 |
| #Pages | 6 |
| Date of Issue | 2019-11-13 (RCS) |
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