| Presentation | 2017-03-03 User Selection Algorithm Considering Time Degradation of CSI for MU-MIMO systems Yuhi Kawakita, Yumi Takaki, Tomio Kamada, Chikara Ohta, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Multiuser MIMO attracts attention as a technology for increasing the speed and capacity of wireless communication. In this paper, we propose PUS-EF, PUS-FUS, and PUS-EF-FUS combining them in order to prevent degradation of orthogonality among transmission target user due to time degradation of CSI. PUS-EF and PUS-FUS are schemes to prevent degradation of orthogonality among transmission target users caused by CSI error. In the former, new CSI users are selected with priority based on the evaluation function that takes account of the elapsed time form CSI final update. In the latter, the newest CSI users are selected with priority in first user selection. We verify the effectiveness of the proposed scheme from the viewpoint of total communication capacity and fairness among users by computer simulation. The results show that the proposed scheme achieves higher total communication capacity and maintains fairness compared to a conventional scheme. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | multiuser MIMO / channel state information / user scheduling / feedback delay |
| Paper # | NS2016-241 |
| Date of Issue | 2017-02-23 (NS) |
| Conference Information | |
| Committee | NS / IN |
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| Conference Date | 2017/3/2(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | OKINAWA ZANPAMISAKI ROYAL HOTEL |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | General |
| Chair | Hideki Tode(Osaka Pref. Univ.) / Katsunori Yamaoka(Tokyo Inst. of Tech.) |
| Vice Chair | Yoshikatsu Okazaki(NTT) / Takuji Kishida(NTT) |
| Secretary | Yoshikatsu Okazaki(Kyushu Inst. of Tech.) / Takuji Kishida(NTT) |
| Assistant | Shohei Kamamura(NTT) / Kunitake Kaneko(Keio Univ.) / Takashi Natsume(NTT) |
| Paper Information | |
| Registration To | Technical Committee on Network Systems / Technical Committee on Information Networks |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | User Selection Algorithm Considering Time Degradation of CSI for MU-MIMO systems |
| Sub Title (in English) | |
| Keyword(1) | multiuser MIMO |
| Keyword(2) | channel state information |
| Keyword(3) | user scheduling |
| Keyword(4) | feedback delay |
| 1st Author's Name | Yuhi Kawakita |
| 1st Author's Affiliation | Kobe University(Kobe Univ.) |
| 2nd Author's Name | Yumi Takaki |
| 2nd Author's Affiliation | Kobe University(Kobe Univ.) |
| 3rd Author's Name | Tomio Kamada |
| 3rd Author's Affiliation | Kobe University(Kobe Univ.) |
| 4th Author's Name | Chikara Ohta |
| 4th Author's Affiliation | Kobe University(Kobe Univ.) |
| Date | 2017-03-03 |
| Paper # | NS2016-241 |
| Volume (vol) | vol.116 |
| Number (no) | NS-484 |
| Page | pp.pp.481-486(NS), |
| #Pages | 6 |
| Date of Issue | 2017-02-23 (NS) |