| Presentation | 2009-07-17 Suboptimal Linear Precoding with Minimum Distance Approach for real-valued signal in Multiuser MIMO Downlink : using improved initial transmit weight Tomoyuki YAMADA, Kentaro NISHIMORI, Yasushi TAKATORI, Masato MIZOGUCHI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper proposes a new linear precoding method for real-valued signals in multiuser MIMO downlink systems that improve the BER (Bit Error Rate) performance. The proposed method rotates the phase of the dominant interference in the signal constellation gained by application of an initial transmit weight. Moreover, we propose an initial transmit weight that suits the phase rotation operations. The fact that the dominant interference signal's power is allowed to be arbitrary enables the designated user to leak arbitrary interference power. Since constraints for forming the initial weight are eased, the transmit power can be reduced which improves BER performance at same transmit power. The proposed method is realized with only a moderate increase in calculation complexity compared to the conventional method. We confirm the effectiveness of the proposed linear precoding method by computer simulations. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Multiuser MIMO Downlink / Linear Precoding / Minimum Distance Criterion / Phase Rotation / initial transmit weight |
| Paper # | RCS2009-67 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2009/7/9(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) | Suboptimal Linear Precoding with Minimum Distance Approach for real-valued signal in Multiuser MIMO Downlink : using improved initial transmit weight |
| Sub Title (in English) | |
| Keyword(1) | Multiuser MIMO Downlink |
| Keyword(2) | Linear Precoding |
| Keyword(3) | Minimum Distance Criterion |
| Keyword(4) | Phase Rotation |
| Keyword(5) | initial transmit weight |
| 1st Author's Name | Tomoyuki YAMADA |
| 1st Author's Affiliation | NTT Network Innovation Laboratories, Nippon Telegraph and Telephone Corporation() |
| 2nd Author's Name | Kentaro NISHIMORI |
| 2nd Author's Affiliation | NTT Network Innovation Laboratories, Nippon Telegraph and Telephone Corporation |
| 3rd Author's Name | Yasushi TAKATORI |
| 3rd Author's Affiliation | NTT Network Innovation Laboratories, Nippon Telegraph and Telephone Corporation |
| 4th Author's Name | Masato MIZOGUCHI |
| 4th Author's Affiliation | NTT Network Innovation Laboratories, Nippon Telegraph and Telephone Corporation |
| Date | 2009-07-17 |
| Paper # | RCS2009-67 |
| Volume (vol) | vol.109 |
| Number (no) | 130 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |