| Presentation | 2022-12-15 Evaluation of MMSE Postcoding Schemes for Reducing Inter-cluster-interference in A Cellular Distributed MU-MIMO System Ryo Takahashi, Hidenori Matsuo, Fumiyuki Adachi, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Cellular distributed multi-user MIMO (MU-MIMO) is a system in which a large number of distributed antennas deployed over a service area are divided into multiple base station cells, user clusters are formed in each base station cell, and cluster-wise distributed MU-MIMO is performed in parallel. The formation of base station cells ensures system scalability, and the use of cluster-wise distributed MU-MIMO in parallel can spatially multiplex users in each cell while ensuring low signal processing computational complexity. The challenge for such a system is the mitigation of inter-cell interference and inter-cluster interference. Inter-cluster interference can be reduced by Minimum Mean Square Error (MMSE) pre/postcoding scheme. So far, we proposed two types of pre/postcoding schemes. One is the MMSE pre/postcoding scheme which considers the inter-cluster interference as an equivalent noise and the other is the inter-cluster interference suppressing MMSE pre/postcoding scheme which takes the instantaneous inter-cluster interference into the channel correlation matrix. In this paper, we evaluate the interference reduction effects of both postcoding schemes for the uplink transmission in a cellular distributed MU-MIMO system. The uplink user capacities achievable by both MMSE postcoding schemes are evaluated by computer simulation and are compared together with the computational complexity. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | cellular distributed MU-MIMO / user cluster / interference reduction / MMSE / computational complexity |
| Paper # | RCS2022-189 |
| Date of Issue | 2022-12-08 (RCS) |
| Conference Information | |
| Committee | RCS / NS |
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| Conference Date | 2022/12/15(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Nagoya Institute of Technology, and Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Multi-hop/Relay/Cooperation, Disaster-resistant wireless network, Sensor/Mesh network, Ad-hoc network, D2D/M2M, Wireless network coding, Handover/AP switching/Connected cell control/Load balancing among base stations/Mobile network dynamic reconfiguration, QoS/QoE assurance, Wireless VoIP, IoT, Edge computing, etc. |
| Chair | Kenichi Higuchi(Tokyo Univ. of Science) / Tetsuya Oishi(NTT) |
| Vice Chair | Tomoya Tandai(Toshiba) / Fumihide Kojima(NICT) / Osamu Muta(Kyushu Univ.) / Takumi Miyoshi(Shibaura Insti of Tech.) |
| Secretary | Tomoya Tandai(Panasonic) / Fumihide Kojima(Univ. of Electro-Comm) / Osamu Muta(Sharp) / Takumi Miyoshi(NTT) |
| Assistant | Manabu Sakai(Mitsubishi Electric) / Masashi Iwabuchi(NTT) / Issei Kanno(KDDI Research) / Yuyuan Chang(Tokyo Inst. of Tech) / Kazuki Maruta(Tokyo Univ. of Science) / Kotaro Mihara(NTT) |
| Paper Information | |
| Registration To | Technical Committee on Radio Communication Systems / Technical Committee on Network Systems |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Evaluation of MMSE Postcoding Schemes for Reducing Inter-cluster-interference in A Cellular Distributed MU-MIMO System |
| Sub Title (in English) | |
| Keyword(1) | cellular distributed MU-MIMO |
| Keyword(2) | user cluster |
| Keyword(3) | interference reduction |
| Keyword(4) | MMSE |
| Keyword(5) | computational complexity |
| 1st Author's Name | Ryo Takahashi |
| 1st Author's Affiliation | Tohoku University(Tohoku Univ.) |
| 2nd Author's Name | Hidenori Matsuo |
| 2nd Author's Affiliation | Tohoku University(Tohoku Univ.) |
| 3rd Author's Name | Fumiyuki Adachi |
| 3rd Author's Affiliation | Tohoku University(Tohoku Univ.) |
| Date | 2022-12-15 |
| Paper # | RCS2022-189 |
| Volume (vol) | vol.122 |
| Number (no) | RCS-311 |
| Page | pp.pp.25-30(RCS), |
| #Pages | 6 |
| Date of Issue | 2022-12-08 (RCS) |