| Presentation | 2021-06-25 Multiple Measurement Vector Approximate Message Passing Without Prior Information of Channels for Grant-Free Non-Orthogonal Multiple Access Takanori Hara, Koji Ishibashi, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | To accommodate a large number of users efficiently, grant-free non-orthogonal multiple access (GF-NOMA) has gained much attention. As a promising scheme to perform active user detection and channel estimation, a multiple measurement vector approximate message passing (MMV-AMP) algorithm has been proposed; however, in this scheme, a base station requires large-scale fading coefficients of all users in advance. In this paper, we propose the MMV-AMP algorithm, which is incorporated into expectation-maximization (EM) algorithm to avoid prior information of the channels. Moreover, we discuss a decision criterion of the active user detection for the proposed algorithm. Throughout computer simulations, we demonstrate that the proposed scheme can estimate the channels with comparable accuracy as the conventional one and accurately perform the active user detection. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Grant-free non-orthogonal multiple access / compressed sensing / approximate message passing / EM algorithm |
| Paper # | RCS2021-71 |
| Date of Issue | 2021-06-16 (RCS) |
| Conference Information | |
| Committee | RCS |
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| Conference Date | 2021/6/23(3days) |
| 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. |
| Chair | Eiji Okamoto(Nagoya Inst. of Tech.) |
| Vice Chair | Fumihide Kojima(NICT) / Toshihiko Nishimura(Hokkaido Univ.) / Tomoya Tandai(Toshiba) |
| Secretary | Fumihide Kojima(Panasonic) / Toshihiko Nishimura(NEC) / Tomoya Tandai |
| Assistant | Koichi Adachi(Univ. of Electro-Comm.) / Osamu Nakamura(Sharp) / Manabu Sakai(Mitsubishi Electric) / Masashi Iwabuchi(NTT) / Tatsuki Okuyama(NTT DOCOMO) |
| Paper Information | |
| Registration To | Technical Committee on Radio Communication Systems |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Multiple Measurement Vector Approximate Message Passing Without Prior Information of Channels for Grant-Free Non-Orthogonal Multiple Access |
| Sub Title (in English) | |
| Keyword(1) | Grant-free non-orthogonal multiple access |
| Keyword(2) | compressed sensing |
| Keyword(3) | approximate message passing |
| Keyword(4) | EM algorithm |
| 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) |
| Date | 2021-06-25 |
| Paper # | RCS2021-71 |
| Volume (vol) | vol.121 |
| Number (no) | RCS-72 |
| Page | pp.pp.243-248(RCS), |
| #Pages | 6 |
| Date of Issue | 2021-06-16 (RCS) |