| Presentation | 2011-07-21 Inter-code Interference Canceller for Control Signals Using Cyclic Shift CDMA in LTE Uplink Yuichiro Hikosaka, Teruo Kawamura, Nobuhiko Miki, Mamoru Sawahashi, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper proposes an inter-code interference canceller (ICIC) for control signals carried by the physical uplink control channel (PUCCH) in the Long-Term Evolution (LTE) uplink using discrete Fourier transform (DFT)-precoded orthogonal frequency division multiple access (OFDMA). In the proposed ICIC, a soft interference replica of another cyclic-shifted code channel for data symbols is generated from the log-likelihood ratio (LLR) of Max-Log-MAP decoder output and a complex fading envelope estimated using reference signals (RSs), and subtracted from the received signal iteratively. We also propose the hybrid RS, i.e., RS multiplexing employing a combination of block spread (BS) and cyclic shift (CS) for two RS symbols within a slot, to achieve accurate channel estimation. Computer simulation results show that the proposed ICIC associated with the hybrid RS multiplexing using a combination of BS and CS is effective in reducing the required average received signal-to-noise power ratio (SNR) even for 12 PUCCH multiplexing in frequency-selective fading channel with long delay spread. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Mobile communications / Single-carrier FDMA / Cyclic shift CDMA / Interference canceller |
| Paper # | RCS2011-76 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2011/7/14(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) | Inter-code Interference Canceller for Control Signals Using Cyclic Shift CDMA in LTE Uplink |
| Sub Title (in English) | |
| Keyword(1) | Mobile communications |
| Keyword(2) | Single-carrier FDMA |
| Keyword(3) | Cyclic shift CDMA |
| Keyword(4) | Interference canceller |
| 1st Author's Name | Yuichiro Hikosaka |
| 1st Author's Affiliation | Deparment of Information Network Engineering, Tokyo City University() |
| 2nd Author's Name | Teruo Kawamura |
| 2nd Author's Affiliation | Radio Access Network Development Department, NTT DOCOMO, INC. |
| 3rd Author's Name | Nobuhiko Miki |
| 3rd Author's Affiliation | Research Laboratories, NTT DOCOMO, INC. |
| 4th Author's Name | Mamoru Sawahashi |
| 4th Author's Affiliation | Deparment of Information Network Engineering, Tokyo City University |
| Date | 2011-07-21 |
| Paper # | RCS2011-76 |
| Volume (vol) | vol.111 |
| Number (no) | 145 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |