| Presentation | 2008-07-25 Statistical-Mechanics-Based Approach to Joint Channel Estimation and Multiuser Detection in DS-CDMA Channels Keigo TAKEUCHI, Mikko VEHKAPERA, Toshiyuki TANAKA, Ralf R. MULLER, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We consider multiuser detection in a randomly-spread frequency-selective block-fading DS-CDMA channel with imperfect CSI at the receiver. We evaluate upper bounds of the spectral efficiencies of two optimal multiuser detectors (MUDs) in large-system limit, by using the so-called replica method, in order to compare them with the spectral efficiency of LMMSE MUD, proposed by Evans and Tse. We find that the LMMSE MUD achieves near-optimal performance for high SNR and small system load if the length of pilot sequences is appropriately adjusted. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | direct-sequence code-division multiple-access (DS-CDMA) systems / frequency-selective fading / multiuser detection / channel estimation / replica method / spectral efficiency |
| Paper # | SIP2008-84,WBS2008-22 |
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| Committee | SIP |
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| Conference Date | 2008/7/18(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Signal Processing (SIP) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Statistical-Mechanics-Based Approach to Joint Channel Estimation and Multiuser Detection in DS-CDMA Channels |
| Sub Title (in English) | |
| Keyword(1) | direct-sequence code-division multiple-access (DS-CDMA) systems |
| Keyword(2) | frequency-selective fading |
| Keyword(3) | multiuser detection |
| Keyword(4) | channel estimation |
| Keyword(5) | replica method |
| Keyword(6) | spectral efficiency |
| 1st Author's Name | Keigo TAKEUCHI |
| 1st Author's Affiliation | Department of Systems Science, Graduate School of Informatics, Kyoto University() |
| 2nd Author's Name | Mikko VEHKAPERA |
| 2nd Author's Affiliation | Department of Electronics and Telecommunications, Norwegian University of Science and Technology |
| 3rd Author's Name | Toshiyuki TANAKA |
| 3rd Author's Affiliation | Department of Systems Science, Graduate School of Informatics, Kyoto University |
| 4th Author's Name | Ralf R. MULLER |
| 4th Author's Affiliation | Department of Electronics and Telecommunications, Norwegian University of Science and Technology |
| Date | 2008-07-25 |
| Paper # | SIP2008-84,WBS2008-22 |
| Volume (vol) | vol.108 |
| Number (no) | 164 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |