| Presentation | 2013-10-21 Successive Optimization Transmission using a SNR Gap for Wireless LAN Systems Riichi Kudo, Koichi Ishihara, Tomoki Murakami, Sithria Abeysekera A.B.Hirantha, Yusuke Asai, Masato Mizoguchi, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Multiple input multiple output (MIMO) techniques are promising to increase the data throughput. Especially multiuser (MU) MIMO transmission increases the spectrum efficiency while the user stations (STA) have a small number of antennas. However, the CSI corresponding to all the STAs is required to conduct the MU-MIMO transmissions. We propose MU-MIMO transmission which does not require the CSI of the low SNR. The proposed method calculate the transmission weight based on successive optimization (SO) algorithm, and transmits signals to two STAs (close STA and distant STA) which correspond to high and low SNRs. The transmission weight for the distant STA was calculated so as to nullify the close STA and the transmission power for the close STA was reduced to mitigate the inter-user interference at the distant STA. Thus, the AP does not use the channel state information for the distant STA. The transmission performance of the proposed method are compared with those provided by the multiuser MIMO transmissions based on zero forcing (ZF) and block diagonalization (BD) algorithms. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Massive MIMO / MIMO-OFDM / CSI estimation / wireless LAN / indoor enviroment |
| Paper # | SRW2013-31 |
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| Conference Information | |
| Committee | SRW |
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| Conference Date | 2013/10/14(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Short Range Wireless Communications(SRW) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Successive Optimization Transmission using a SNR Gap for Wireless LAN Systems |
| Sub Title (in English) | |
| Keyword(1) | Massive MIMO |
| Keyword(2) | MIMO-OFDM |
| Keyword(3) | CSI estimation |
| Keyword(4) | wireless LAN |
| Keyword(5) | indoor enviroment |
| 1st Author's Name | Riichi Kudo |
| 1st Author's Affiliation | NTT Network Innovation Systems Laboratory() |
| 2nd Author's Name | Koichi Ishihara |
| 2nd Author's Affiliation | NTT Network Innovation Systems Laboratory |
| 3rd Author's Name | Tomoki Murakami |
| 3rd Author's Affiliation | NTT Network Innovation Systems Laboratory |
| 4th Author's Name | Sithria Abeysekera A.B.Hirantha |
| 4th Author's Affiliation | NTT Network Innovation Systems Laboratory |
| 5th Author's Name | Yusuke Asai |
| 5th Author's Affiliation | NTT Network Innovation Systems Laboratory |
| 6th Author's Name | Masato Mizoguchi |
| 6th Author's Affiliation | NTT Network Innovation Systems Laboratory |
| Date | 2013-10-21 |
| Paper # | SRW2013-31 |
| Volume (vol) | vol.113 |
| Number (no) | 255 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |