| Presentation | 2015-06-26 Performance Comparison of Random Beamforming and Codebook-Based Beamforming in Cellular Downlink with Massive MIMO Takuya Hoshino, Kenichi Higuchi, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper compares the throughput levels of random beamforming (RB) and codebook-based beamforming (CBBF) in cellular downlink with Massive multiple-input multiple-output (MIMO). In MIMO transmission, the number of beams impacts on the spatial multiplexing effect and the inter-beam interference, simultaneously. Furthermore, the inter-cell interference power is dependent on the applied BF matrix at the neighbor base station except for the case when the number of beams equals to the number of base station transmitter antennas and unitary matrix is used as a BF matrix. When we assume massive MIMO where the number of base station transmitter antennas is very large, since we can expect that the number of beams less than the number of base station transmitter antennas is desirable, the above mentioned three factors largely affects the performance difference between BF methods. From the simulation results, we show that the RBF with limited number of beams can achieve higher throughput than the CBBF, since the BF matrix is predetermined before the data transmission and therefore the inter-cell interference power can be accurately estimated irrespective of the number of beams in RBF. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | MIMO / Multiuser MIMO / codebook-based beamforming / Random beamforming |
| Paper # | RCS2015-89 |
| Date of Issue | 2015-06-17 (RCS) |
| Conference Information | |
| Committee | RCS |
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| Conference Date | 2015/6/24(3days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Hokkaido Univ. |
| 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 | Makoto Taromaru(Fukuoka Univ.) |
| Vice Chair | Hidekazu Murata(Kyoto Univ.) / Satoshi Denno(Okayama Univ.) / Yukitoshi Sanada(Keio Univ.) |
| Secretary | Hidekazu Murata(Mitsubishi Electric) / Satoshi Denno(NTT DoCoMo) / Yukitoshi Sanada |
| Assistant | Jun Mashino(NTT) / Tetsuya Yamamoto(Panasonic) / Takamichi Inoue(NEC) / Tomoya Tandai(Toshiba) / Toshihiko Nishimura(Hokkaido Univ.) |
| 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 Comparison of Random Beamforming and Codebook-Based Beamforming in Cellular Downlink with Massive MIMO |
| Sub Title (in English) | |
| Keyword(1) | MIMO |
| Keyword(2) | Multiuser MIMO |
| Keyword(3) | codebook-based beamforming |
| Keyword(4) | Random beamforming |
| 1st Author's Name | Takuya Hoshino |
| 1st Author's Affiliation | Tokyo University of Science(Tokyo Univ. of Science) |
| 2nd Author's Name | Kenichi Higuchi |
| 2nd Author's Affiliation | Tokyo University of Science(Tokyo Univ. of Science) |
| Date | 2015-06-26 |
| Paper # | RCS2015-89 |
| Volume (vol) | vol.115 |
| Number (no) | RCS-113 |
| Page | pp.pp.253-256(RCS), |
| #Pages | 4 |
| Date of Issue | 2015-06-17 (RCS) |