| Presentation | 2023-07-13 A configuration for overloaded MU-MIMO systems Kazuki Miyata, Satoshi Denno, Yafei Hou, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this report, we consider overload communication in MU-MIMO systems in order to further increase the capacity of downlink communication to multiple users. Overloaded communication is a case where the number of receiving antennas is smaller than the number of transmitting streams. In the proposed scheme, overload MU-MIMO communication is realized by precoding with a weight matrix generated based on singular value decomposition. In contrast, we attempt to improve the communication characteristics by performing nonlinear processing to equalize the power of each stream. The nonlinear processing is performed by using basis-grid reduction to optimize the modulo processing. At the receiver side, demodulation is performed using basis-grid reduction corresponding to the precoded transmitted signal. The basis-grid reduction improves the orthogonality of the channel portion, resulting in lower spatial correlation and reduced noise enhancement. Bit Error Rate (BER) characteristics were calculated by computer simulation, and the precoding characteristics were evaluated and compared. The results showed that the transmission characteristics of the overloaded MU-MIMO system and the nonlinear processing improved the transmission characteristics. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | overload / MU-MIMO / nonlinear / precoding / downlink |
| Paper # | RCS2023-94 |
| Date of Issue | 2023-07-05 (RCS) |
| Conference Information | |
| Committee | SeMI / RCS / RCC / NS / SR |
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| Conference Date | 2023/7/12(3days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Osaka University Nakanoshima Center + Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Distributed Wireless Network, M2M (Machine-to-Machine)，D2D (Device-to-Device)，IoT（Internet of Things）, etc |
| Chair | Kazuya Monden(Hitachi) / Kenichi Higuchi(Tokyo Univ. of Science) / Shunichi Azuma(Kyoto Univ.) / Tetsuya Oishi(NTT) / Osamu Takyu(Shinshu Univ.) |
| Vice Chair | Yasunori Owada(NICT) / Shunsuke Saruwatari(Osaka Univ.) / Fumihide Kojima(NICT) / Osamu Muta(Kyushu Univ.) / Naoto Ishii(NEC) / Shunichi Azuma(Hokkaido Univ.) / Koji Ishii(Kagawa Univ.) / Takumi Miyoshi(Shibaura Inst. of Tech.) / Kentaro Ishidu(NICT) / Kazuto Yano(ATR) / Shusuke Narieda(Mie Univ.) |
| Secretary | Yasunori Owada(NTT DOCOMO) / Shunsuke Saruwatari(Tokyo Univ. of Agri. and Tech.) / Fumihide Kojima(Univ. of Tokyo) / Osamu Muta(Univ. of Electro-Comm) / Naoto Ishii(Sharp) / Shunichi Azuma(Mitsubishi Electric) / Koji Ishii(CRIEPI) / Takumi Miyoshi(Ritsumeikan Univ.) / Kentaro Ishidu(NTT) / Kazuto Yano(Kogakuin Univ.) / Shusuke Narieda(Tokai Univ.) |
| Assistant | Yuki Matsuda(NAIST) / Taku Suzuki(Hitachi) / Takeshi Hirai(Osaka Univ.) / Masashi Iwabuchi(NTT) / Issei Kanno(KDDI Research) / Yuyuan Chang(Tokyo Inst. of Tech) / Kazuki Maruta(Tokyo Univ. of Science) / Kiichi Tateishi(NTT Docomo) / SHAN LIN(NICT) / Ryosuke Adachi(Yamaguchi Univ.) / Hiroshi Yamamoto(NTT) / Taichi Ohtsuji(NEC) / WANG Xiaoyan(Ibaraki Univ.) / Akemi Tanaka(MathWorks) / Katsuya Suto(Univ. of Electro-Comm) |
| Paper Information | |
| Registration To | Technical Committee on Sensor Network and Mobile Intelligence / Technical Committee on Radio Communication Systems / Technical Committee on Reliable Communication and Control / Technical Committee on Network Systems / Technical Committee on Smart Radio |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A configuration for overloaded MU-MIMO systems |
| Sub Title (in English) | |
| Keyword(1) | overload |
| Keyword(2) | MU-MIMO |
| Keyword(3) | nonlinear |
| Keyword(4) | precoding |
| Keyword(5) | downlink |
| 1st Author's Name | Kazuki Miyata |
| 1st Author's Affiliation | Okayama University(Okayama Univ.) |
| 2nd Author's Name | Satoshi Denno |
| 2nd Author's Affiliation | Okayama University(Okayama Univ.) |
| 3rd Author's Name | Yafei Hou |
| 3rd Author's Affiliation | Okayama University(Okayama Univ.) |
| Date | 2023-07-13 |
| Paper # | RCS2023-94 |
| Volume (vol) | vol.123 |
| Number (no) | RCS-108 |
| Page | pp.pp.76-81(RCS), |
| #Pages | 6 |
| Date of Issue | 2023-07-05 (RCS) |