| Presentation | 2010-03-05 A Study on Design of Turbo Code for Spectrum-Overlapped Resource Management Jungo GOTO, Kazunari YOKOMAKURA, Osamu NAKAMURA, Hiroki TAKAHASHI, Yasuhiro HAMAGUCHI, Shinsuke IBI, Seiichi SAMPEI, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper presents a suitable design as turbo encoder for a spectrum-overlapped resource management (SORM) by using EXIT (Extrinsic Information Transfer) analysis. In the SORM, since each user's spectrum is allowed to overlap with the other users' spectra, users are allocated to an arbitrary frequency positions having good channel conditions. The overlapped spectra are detected by a turbo equalizer which is applied as the receiver algorithm. Therefore, if iteration of the turbo equalizer successfully converges, inter-symbol interference (ISI) and inter-user interference (IUI) are completely canceled. However, at the first iteration, SINR (Signal to Interference and Noise Ratio) is low because of influencing these interferences. On the other hand, since turbo codes are optimized in the AWGN channel, error correction hardly work while SINR is lower than correctable SINR. Therefore, a turbo equalizer becomes poorer convergence property due to mismatch turbo decoder and equalizer while equalizer outputs low SINR caused by IUI such as the SORM. Consequently, the performance degrades in the case of using higher coding rate. This paper proposes turbo code with non-identical component encoder for turbo equalizer. We decide constraint length of component encoder according to its EXIT characteristic for improving convergence property and show that proposal turbo code in the SORM improves transmission performance in the higher coding rate. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | SORM / Turbo Equalization / EXIT Analyze / Turbo Code / Component Encoder / Constraint Length |
| Paper # | RCS2009-313 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2010/2/24(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) | A Study on Design of Turbo Code for Spectrum-Overlapped Resource Management |
| Sub Title (in English) | |
| Keyword(1) | SORM |
| Keyword(2) | Turbo Equalization |
| Keyword(3) | EXIT Analyze |
| Keyword(4) | Turbo Code |
| Keyword(5) | Component Encoder |
| Keyword(6) | Constraint Length |
| 1st Author's Name | Jungo GOTO |
| 1st Author's Affiliation | Advanced Image and Telecommunication Laboratory, Corporate R & D Group, SHARP corporation() |
| 2nd Author's Name | Kazunari YOKOMAKURA |
| 2nd Author's Affiliation | Advanced Image and Telecommunication Laboratory, Corporate R & D Group, SHARP corporation |
| 3rd Author's Name | Osamu NAKAMURA |
| 3rd Author's Affiliation | Advanced Image and Telecommunication Laboratory, Corporate R & D Group, SHARP corporation |
| 4th Author's Name | Hiroki TAKAHASHI |
| 4th Author's Affiliation | Advanced Image and Telecommunication Laboratory, Corporate R & D Group, SHARP corporation |
| 5th Author's Name | Yasuhiro HAMAGUCHI |
| 5th Author's Affiliation | Advanced Image and Telecommunication Laboratory, Corporate R & D Group, SHARP corporation |
| 6th Author's Name | Shinsuke IBI |
| 6th Author's Affiliation | Graduate School of Engineering, Osaka University |
| 7th Author's Name | Seiichi SAMPEI |
| 7th Author's Affiliation | Graduate School of Engineering, Osaka University |
| Date | 2010-03-05 |
| Paper # | RCS2009-313 |
| Volume (vol) | vol.109 |
| Number (no) | 440 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |