| Presentation | 2006-07-19 A fundamental study on multicode transmission with frequency domain equalization Kiyoto IWAZAKI, Toshihiko NISHIMURA, Takeo OHGANE, Yasutaka OGAWA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In frequency-selective channels, the performance of a direct sequence code division multiplexing (DS-CDM) system is severely degraded by inter-code interference since code orthogonality is no longer satisfied. However, the inter-code interference can be suppressed by frequency domain equalization (FDE). On the other hand, multicode transmission in DS-CDM causes an increase of peak-to-average-power-ratio (PAPR). For PAPR reduction, it is known that selection or multiplexed symbol combination from a limited group is effective. Here, side information on the selection must be transmitted. In this paper, we propose to use the side information as a code redundancy and to apply turbo type decoding. As the first step, the performance of multicode transmission with a simple even parity is evaluated. The resutls show that, using turbo type decoding and MMSE-FDE in a frequency selective channel, the obtained gain at FER of 10^<-3> is about 3dB. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | multicode DS-CDM / frequency selective fading / MMSE-FDE / PAPR / iterative decoding |
| Paper # | RCS2006-71 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2006/7/12(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 fundamental study on multicode transmission with frequency domain equalization |
| Sub Title (in English) | |
| Keyword(1) | multicode DS-CDM |
| Keyword(2) | frequency selective fading |
| Keyword(3) | MMSE-FDE |
| Keyword(4) | PAPR |
| Keyword(5) | iterative decoding |
| 1st Author's Name | Kiyoto IWAZAKI |
| 1st Author's Affiliation | Graduate School of Information Science and Technology, Hokkaido University() |
| 2nd Author's Name | Toshihiko NISHIMURA |
| 2nd Author's Affiliation | Graduate School of Information Science and Technology, Hokkaido University |
| 3rd Author's Name | Takeo OHGANE |
| 3rd Author's Affiliation | Graduate School of Information Science and Technology, Hokkaido University |
| 4th Author's Name | Yasutaka OGAWA |
| 4th Author's Affiliation | Graduate School of Information Science and Technology, Hokkaido University |
| Date | 2006-07-19 |
| Paper # | RCS2006-71 |
| Volume (vol) | vol.106 |
| Number (no) | 168 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |