| Presentation | 2008-03-06 Precoding for MIMO Systems in Line-Of-Sight (LOS) Environments Kenichi KOBAYASHI, Tomoaki OHTSUKI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In Rician fading environments, the performance of Multiple-Input Multiple-Output (MIMO) systems may degrade owing to the high path correlation. In this report, we propose a MIMO system with precoding to maximize the minimum distance to improve the performance of MIMO systems in Rician fading environments. Precoding to maximize the minimum distance can improve the detection performance of maximum likelihood detection (MLD) by maximizing the minimum Euclidean distance between symbol points at the receiver side. We uses long-term average channel state information (CSI) instead of instantaneous CSI for precoding. We also propose a reduced-complexity MLD that uses the reliability of symbols obtained from precoding. From the results of computer simulation, we show that the proposed system can achieve the better bit error rate (BER) than the conventional systems without precoding. We also show that the proposed system with reduced-complexity MLD can achieve low complexity and identical BER compared to the other systems. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | MIMO / Rician fading / direct path / MLD / precoding / CSI |
| Paper # | RCS2007-216 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2008/2/27(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| 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) | Precoding for MIMO Systems in Line-Of-Sight (LOS) Environments |
| Sub Title (in English) | |
| Keyword(1) | MIMO |
| Keyword(2) | Rician fading |
| Keyword(3) | direct path |
| Keyword(4) | MLD |
| Keyword(5) | precoding |
| Keyword(6) | CSI |
| 1st Author's Name | Kenichi KOBAYASHI |
| 1st Author's Affiliation | Graduate School of Science and Technology, Tokyo University of Science() |
| 2nd Author's Name | Tomoaki OHTSUKI |
| 2nd Author's Affiliation | Faculty School of Science and Technology, Keio University |
| Date | 2008-03-06 |
| Paper # | RCS2007-216 |
| Volume (vol) | vol.107 |
| Number (no) | 518 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |