| Presentation | 2008-08-27 Performance improvement of Evolved UTRA uplink control channel for fast fading environments Seigo NAKAO, Tomohumi TAKATA, Daichi IMAMURA, Katsuhiko HIRAMATSU, Kazuyuki Miya, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | HARQ (Hybrid Automatic Repeat Request) is employed for the 3GPP E-UTRA downlink. Each mobile terminal sends its ACK/NACK to the base station via PUCCH (Physical Uplink Control CHannel). The ACK/NACK signals from mobile stations are code spread by the cyclic shift CAZAC (Constant Amplitude Zero Auto-Correlation) sequences first, and then spread by the orthogonal sequences. The ACK/NACK signals from each mobile station are multiplexed by means of CDMA (Code Division Multiple Access), however, it is difficult for the conventional PUCCH structure to satisfy the required BER (Bit Error Rate) of 10^<-3> in the fast fading environments. This is because of the orthogonality loss among the orthogonal sequences in the conventional PUCCH structure and the inter-code interference degrades the BER performance of ACK/NACK signals. In this paper, we propose a new PUCCH structure which can suppress the inter-code interference among the orthogonal sequences. And simulation evaluations show the proposed structure can significantly improve the performance of the ACK/NACK signals via PUCCH especially in the fast fading environments. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | E-UTRA / CAZAC sequences / Cyclic Shift Sequences / Walsh sequences / CDMA / Uplink control channel |
| Paper # | RCS2008-61 |
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| Committee | RCS |
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| Conference Date | 2008/8/20(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) | Performance improvement of Evolved UTRA uplink control channel for fast fading environments |
| Sub Title (in English) | |
| Keyword(1) | E-UTRA |
| Keyword(2) | CAZAC sequences |
| Keyword(3) | Cyclic Shift Sequences |
| Keyword(4) | Walsh sequences |
| Keyword(5) | CDMA |
| Keyword(6) | Uplink control channel |
| 1st Author's Name | Seigo NAKAO |
| 1st Author's Affiliation | Next-Generation Mobile Communications Development Center, Matsushita Electric Industrial Co., Ltd.() |
| 2nd Author's Name | Tomohumi TAKATA |
| 2nd Author's Affiliation | Panasonic Mobile Communications R & D Lab. Co., Ltd. |
| 3rd Author's Name | Daichi IMAMURA |
| 3rd Author's Affiliation | Next-Generation Mobile Communications Development Center, Matsushita Electric Industrial Co., Ltd. |
| 4th Author's Name | Katsuhiko HIRAMATSU |
| 4th Author's Affiliation | Next-Generation Mobile Communications Development Center, Matsushita Electric Industrial Co., Ltd. |
| 5th Author's Name | Kazuyuki Miya |
| 5th Author's Affiliation | Panasonic Mobile Communications R & D Lab. Co., Ltd. |
| Date | 2008-08-27 |
| Paper # | RCS2008-61 |
| Volume (vol) | vol.108 |
| Number (no) | 188 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |