| Presentation | 2009-11-27 Multipath Division Turbo Equalization with Block Inter-Carrier Interference Cancellation with Low Sensitivity of Residual Error Caused by Soft Replica Katsuya KATO, Ryota YAMADA, Kazuhiro ABE, Takashi YOSHIMOTO, Minoru KUBOTA, Naoki OKAMOTO, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This report proposes Multipath Division turbo equalization with Block Inter-carrier interference Cancellation to suppress Inter-Symbol Interference (ISI) and Inter-Carrier Interference (ICI) caused in large delay environments. In multipath environments with delay difference greater than Guard Interval (GI) length, OFDM transmissions suffer from severe degradation due to ISI and ICI. ISI is a leak of adjacent OFDM symbols, and loss of orthogonality in the FFT window causes ICI. The proposed method exploits log likelihood ratio which is a fed back from a decoder and generates a transmitted signal replica. Using that replica, a multipath is divided into several blocks in which the maximum delay difference is limited so as not to exceed the GI length. A multipath division process eliminates a portion of desired signal alongside ISI and ICI, and residual error occurs. The proposed method avoids this error by reconstructing the lost desired signal in the frequency domain, and achieves great transmission performance. Computer simulations demonstrate the effectiveness of the proposed method in an environment with large delay spread channel. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | OFDM / Guard Interval / Inter Symbol Interference / Inter Carrier Interference / Turbo Equalization |
| Paper # | RCS2009-155 |
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| Committee | RCS |
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| Conference Date | 2009/11/19(1days) |
| Place (in Japanese) | (See Japanese page) |
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| 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) | Multipath Division Turbo Equalization with Block Inter-Carrier Interference Cancellation with Low Sensitivity of Residual Error Caused by Soft Replica |
| Sub Title (in English) | |
| Keyword(1) | OFDM |
| Keyword(2) | Guard Interval |
| Keyword(3) | Inter Symbol Interference |
| Keyword(4) | Inter Carrier Interference |
| Keyword(5) | Turbo Equalization |
| 1st Author's Name | Katsuya KATO |
| 1st Author's Affiliation | Advanced Image & Telecommunication Laboratories, Corporate R & D Group, SHARP corporation() |
| 2nd Author's Name | Ryota YAMADA |
| 2nd Author's Affiliation | Advanced Image & Telecommunication Laboratories, Corporate R & D Group, SHARP corporation |
| 3rd Author's Name | Kazuhiro ABE |
| 3rd Author's Affiliation | Advanced Image & Telecommunication Laboratories, Corporate R & D Group, SHARP corporation |
| 4th Author's Name | Takashi YOSHIMOTO |
| 4th Author's Affiliation | Advanced Image & Telecommunication Laboratories, Corporate R & D Group, SHARP corporation |
| 5th Author's Name | Minoru KUBOTA |
| 5th Author's Affiliation | Advanced Image & Telecommunication Laboratories, Corporate R & D Group, SHARP corporation |
| 6th Author's Name | Naoki OKAMOTO |
| 6th Author's Affiliation | Advanced Image & Telecommunication Laboratories, Corporate R & D Group, SHARP corporation |
| Date | 2009-11-27 |
| Paper # | RCS2009-155 |
| Volume (vol) | vol.109 |
| Number (no) | 305 |
| Page | pp.pp.- |
| #Pages | 6 |
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