| Presentation | 2012-01-26 Indoor Experiments of Real-Time MU-MIMO Transmission with CSI Feedback Scheme Based on DCT for Next Generation Wireless LAN Systems Koichi ISHIHARA, Yusuke ASAI, Riichi KUDO, Takeo ICHIKAWA, Masato MIZOGUCHI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper presents indoor experimental results on an implemented real-time downlink multiuser multiple-input multiple-output (DL-MU-MIMO) transceiver with an efficient channel state information (CSI) feedback scheme for next generation wireless LAN systems. Estimated CSI is used at the access point (AP) transmitter to calculate transmit beamforming weight for DL-MU-MIMO transmission. To increase the system throughput, a CSI compression scheme using discrete cosine transform (DCT) is proposed to reduce overhead due to CSI feedback. We demonstrate experimental results for the implemented downlink MU-MIMO transceiver in an actual indoor environment and show that the proposed CSI feedback scheme is a feasible tool for real-time signal processing that improves system throughput over that of transceiver without a CSI compression scheme with simple digital signal processing of single-antenna stations (STAs). |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Multiuser MIMO / CSI feedback / OFDM / Downlink / Wireless LAN / Discrete cosine transform |
| Paper # | SIP2011-88,RCS2011-277 |
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| Committee | RCS |
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| Conference Date | 2012/1/19(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) | Indoor Experiments of Real-Time MU-MIMO Transmission with CSI Feedback Scheme Based on DCT for Next Generation Wireless LAN Systems |
| Sub Title (in English) | |
| Keyword(1) | Multiuser MIMO |
| Keyword(2) | CSI feedback |
| Keyword(3) | OFDM |
| Keyword(4) | Downlink |
| Keyword(5) | Wireless LAN |
| Keyword(6) | Discrete cosine transform |
| 1st Author's Name | Koichi ISHIHARA |
| 1st Author's Affiliation | NTT Network Innovation Laboratories, NTT Corporation.() |
| 2nd Author's Name | Yusuke ASAI |
| 2nd Author's Affiliation | NTT Network Innovation Laboratories, NTT Corporation. |
| 3rd Author's Name | Riichi KUDO |
| 3rd Author's Affiliation | NTT Network Innovation Laboratories, NTT Corporation. |
| 4th Author's Name | Takeo ICHIKAWA |
| 4th Author's Affiliation | NTT Network Innovation Laboratories, NTT Corporation. |
| 5th Author's Name | Masato MIZOGUCHI |
| 5th Author's Affiliation | NTT Network Innovation Laboratories, NTT Corporation. |
| Date | 2012-01-26 |
| Paper # | SIP2011-88,RCS2011-277 |
| Volume (vol) | vol.111 |
| Number (no) | 404 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |