| Presentation | 2011-04-22 Impact of the Channel Feedback Load Reduction on Performance of Downlink Linear and Nonlinear Multiuser MIMO Satoshi SONOBE, Yafei HOU, Kazuto YANO, Masahiro UNO, Masazumi UEBA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this paper, on downlink multiuser MIMO-OFDM system, we evalute the impact of reducing the number of subaband on the performance of linear and non-linear algorithms for the purpose of channel feedback load reduction. We also evalute the impact of an analog feedback method, which sends back a channel value estimated at reciever side and can reduce the channel feedback load further. The simulation result shows that reducing the number of subband to 50, the spectral efficiency of linear and non-linear algorithms degrades. Especially the saturated spectral efficiency of linear algorithm degrades largely. In addition, it is shown that using analog feedback, the performance of VP and BD-VP improves largely with reducing the channel feedback load to about 1/3 to 1/4 against the digital feedback. Especially the performance of BD-VP improves in case of high SNR and high Rician factor. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | MU-MIMO / nonlinear algorithm / vector perturbation / THP / MMSE / block diagonalization / patially correlated channel / analog feedback |
| Paper # | RCS2011-12 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2011/4/14(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 | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Impact of the Channel Feedback Load Reduction on Performance of Downlink Linear and Nonlinear Multiuser MIMO |
| Sub Title (in English) | |
| Keyword(1) | MU-MIMO |
| Keyword(2) | nonlinear algorithm |
| Keyword(3) | vector perturbation |
| Keyword(4) | THP |
| Keyword(5) | MMSE |
| Keyword(6) | block diagonalization |
| Keyword(7) | patially correlated channel |
| Keyword(8) | analog feedback |
| 1st Author's Name | Satoshi SONOBE |
| 1st Author's Affiliation | ATR Wave Engineering Laboratories() |
| 2nd Author's Name | Yafei HOU |
| 2nd Author's Affiliation | ATR Wave Engineering Laboratories |
| 3rd Author's Name | Kazuto YANO |
| 3rd Author's Affiliation | ATR Wave Engineering Laboratories |
| 4th Author's Name | Masahiro UNO |
| 4th Author's Affiliation | ATR Wave Engineering Laboratories |
| 5th Author's Name | Masazumi UEBA |
| 5th Author's Affiliation | ATR Wave Engineering Laboratories |
| Date | 2011-04-22 |
| Paper # | RCS2011-12 |
| Volume (vol) | vol.111 |
| Number (no) | 12 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |