| Presentation | 2021-10-21 Performance Evaluation of Scalable Cell-Free Massive MIMO Systems with Multiple CPUs Subject to Backhaul Capacity Limitation Masaaki Ito, Issei Kanno, Kosuke Yamazaki, Kengo Ando, Shuto Fukue, Hiroki Iimori, Koji Ishibashi, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(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) |
| Keyword(in English) | 6G / cell-free massive MIMO / multiple CPUs / distributed MIMO |
| Paper # | RCS2021-119 |
| Date of Issue | 2021-10-14 (RCS) |
| Conference Information | |
| Committee | RCS |
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| Conference Date | 2021/10/21(2days) |
| 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. |
| Chair | Eiji Okamoto(Nagoya Inst. of Tech.) |
| Vice Chair | Toshihiko Nishimura(Hokkaido Univ.) / Tomoya Tandai(Toshiba) / Fumihide Kojima(NICT) |
| Secretary | Toshihiko Nishimura(NEC) / Tomoya Tandai(Panasonic) / Fumihide Kojima |
| 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) | 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 |
| 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) |
| Date | 2021-10-21 |
| Paper # | RCS2021-119 |
| Volume (vol) | vol.121 |
| Number (no) | RCS-210 |
| Page | pp.pp.7-12(RCS), |
| #Pages | 6 |
| Date of Issue | 2021-10-14 (RCS) |