| Presentation | 2008-08-27 Performance of Multiuser MIMO Systems Employing the Block-Diagonalization Scheme and the E-SDM Technique in Actual Time-Varying Fading Environments Huu Phu BUI, Yasutaka OGAWA, Toshihiko NISHIMURA, Takeo OHGANE, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In the paper, we present our measurement campaigns in a typical meeting room to get multiuser multiple-input multiple-output (MIMO) channels. Based on the data, the performance of multiuser MIMO systems employing the block-diagonalization (BD) scheme and the eigenbeam-space division multiplexing (E-SDM) technique for downlink transmission is evaluated in actual time-varying fading environments. Simulation results show that due to a channel change during the time interval between the transmit weight matrix determination and the actual downlink data transmission, the performance is much degraded because of inter-user and inter-substream interference. Here, we propose two methods of channel extrapolation, linear extrapolation and second-order extrapolation, to compensate for the channel change. Simulation results show that applying the proposed methods to the systems, much better performance can be obtained. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Multiuser MIMO systems / E-SDM / Block-diagonalization scheme / channel extrapolation / time-varying fading environment |
| Paper # | RCS2008-56 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2008/8/20(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Radio Communication Systems (RCS) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Performance of Multiuser MIMO Systems Employing the Block-Diagonalization Scheme and the E-SDM Technique in Actual Time-Varying Fading Environments |
| Sub Title (in English) | |
| Keyword(1) | Multiuser MIMO systems |
| Keyword(2) | E-SDM |
| Keyword(3) | Block-diagonalization scheme |
| Keyword(4) | channel extrapolation |
| Keyword(5) | time-varying fading environment |
| 1st Author's Name | Huu Phu BUI |
| 1st Author's Affiliation | Graduate School of Information Science and Technology, Hokkaido University() |
| 2nd Author's Name | Yasutaka OGAWA |
| 2nd Author's Affiliation | Graduate School of Information Science and Technology, Hokkaido University |
| 3rd Author's Name | Toshihiko NISHIMURA |
| 3rd Author's Affiliation | Graduate School of Information Science and Technology, Hokkaido University |
| 4th Author's Name | Takeo OHGANE |
| 4th Author's Affiliation | Graduate School of Information Science and Technology, Hokkaido University |
| Date | 2008-08-27 |
| Paper # | RCS2008-56 |
| Volume (vol) | vol.108 |
| Number (no) | 188 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |