| Presentation | 2012-08-31 Comparative Study of Open-Loop Transmit Diversity Schemes with Four Antennas in DFT-Precoded OFDMA Using Turbo FDE and Iterative Channel Estimation Lianjun Deng, Teruo Kawamura, Hidekazu Taoka, Mamoru Sawahashi, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper presents comprehensive comparisons on the block error rate (BLER) performance of open-loop (OL) transmit diversity schemes with four antennas for discrete Fourier transform (DFT)-precoded Orthogonal Frequency Division Multiple Access (OFDMA). One candidate scheme employs a quasi-orthogonal (QO)-space-time block code (STBC) in which four-branch minimum mean-square error combining (MMSEC) is achieved at the cost of residual inter-code interference (ICI). Another candidate employs a combination of the STBC and selection diversity called time switched transmit diversity (TSTD) or frequency switched transmit diversity (FSTD). We apply a turbo frequency domain equalizer (FDE) associated with iterative decision-feedback channel estimation (DFCE) using soft-symbol estimation to reduce channel estimation (CE) error. The turbo FDE includes an ICI canceller to reduce the influences of the residual ICI for QO-STBC. Based on extensive link-level simulation results, we show that a combination of the STBC and TSTD (FSTD) is suitable as a four-antenna OL transmit diversity scheme for DFT-precoded OFDMA using turbo FDE and iterative DFCE. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Mobile communications / Single-carrier FDMA / Transmit diversity / STBC / Turbo FDE / channel estimation |
| Paper # | RCS2012-115 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2012/8/23(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 | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Comparative Study of Open-Loop Transmit Diversity Schemes with Four Antennas in DFT-Precoded OFDMA Using Turbo FDE and Iterative Channel Estimation |
| Sub Title (in English) | |
| Keyword(1) | Mobile communications |
| Keyword(2) | Single-carrier FDMA |
| Keyword(3) | Transmit diversity |
| Keyword(4) | STBC |
| Keyword(5) | Turbo FDE |
| Keyword(6) | channel estimation |
| 1st Author's Name | Lianjun Deng |
| 1st Author's Affiliation | Department 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 | Hidekazu Taoka |
| 3rd Author's Affiliation | DOCOMO Communications Laboratories Europe GmbH |
| 4th Author's Name | Mamoru Sawahashi |
| 4th Author's Affiliation | Department of Information Network Engineering, Tokyo City University |
| Date | 2012-08-31 |
| Paper # | RCS2012-115 |
| Volume (vol) | vol.112 |
| Number (no) | 192 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |