| Presentation | 2018-06-20 Relationship between Interference-Wave Suppression Using Null-Space Extension in Multiuser MIMO and formed Beam-Pattern Hironori Ban, Makoto Taromaru, Mai Ohta, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Some papers reported that a zero-forcing (ZF) adaptive array antenna ormulti-user MIMO system at basestations can be robust against channel fluctuation by using null-space dimension expansion. It sets the combining weights be orthogonal not only to the most recent channels of the interferers but also to the previous paster ones. This report discuss the relationship between the beam pattern formed for Rayleigh and Nakagami Rice fading and AoA(angle of arrival) of each the incident wave from the interference terminals, and a null pattern is formed in AoA of the elementary wave using computer simulation. In addition, it also refers to the relationship between degradation of SIR due to terminal movement during channel estimation period and null-space dimension expansion and evaluates it in terms of characteristics of SIR to show the validity of theoretical investigation. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | adaptive array antenna / degree of freedom / MIMO / diversity / zero-forcing / null-space extension |
| Paper # | RCS2018-43 |
| Date of Issue | 2018-06-13 (RCS) |
| Conference Information | |
| Committee | RCS |
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| Conference Date | 2018/6/20(3days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Nagasaki University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | First Presentation in IEICE Technical Committee, Railroad Communications, Inter-Vehicle Communications, Road to Vehicle Communications, Resource Control, Scheduling, Wireless Communication Systems, etc. |
| Chair | Tomoaki Otsuki(Keio Univ.) |
| Vice Chair | Eisuke Fukuda(Fujitsu Labs.) / Satoshi Suyama(NTT DoCoMo) / Fumiaki Maehara(Waseda Univ.) |
| Secretary | Eisuke Fukuda(Hokkaido Univ.) / Satoshi Suyama(NTT) / Fumiaki Maehara |
| Assistant | Kazushi Muraoka(NTT DOCOMO) / Shinsuke Ibi(Osaka Univ.) / Hiroshi Nishimoto(Mitsubishi Electric) / Koichi Adachi(Univ. of Electro-Comm.) / Osamu Nakamura(Sharp) |
| 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) | Relationship between Interference-Wave Suppression Using Null-Space Extension in Multiuser MIMO and formed Beam-Pattern |
| Sub Title (in English) | |
| Keyword(1) | adaptive array antenna |
| Keyword(2) | degree of freedom |
| Keyword(3) | MIMO |
| Keyword(4) | diversity |
| Keyword(5) | zero-forcing |
| Keyword(6) | null-space extension |
| 1st Author's Name | Hironori Ban |
| 1st Author's Affiliation | Fukuoka University(Fukuoka Univ.) |
| 2nd Author's Name | Makoto Taromaru |
| 2nd Author's Affiliation | Fukuoka University(Fukuoka Univ.) |
| 3rd Author's Name | Mai Ohta |
| 3rd Author's Affiliation | Fukuoka University(Fukuoka Univ.) |
| Date | 2018-06-20 |
| Paper # | RCS2018-43 |
| Volume (vol) | vol.118 |
| Number (no) | RCS-101 |
| Page | pp.pp.49-54(RCS), |
| #Pages | 6 |
| Date of Issue | 2018-06-13 (RCS) |