| Presentation | 2008-03-05 A Study of Frequency-Domain Equalization for DS-CDMA Cyclic Delay Transmit Diversity Tetsuya YAMAMOTO, Kazuki TAKEDA, Fumiyuki ADACHI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Cyclic delay transmit diversity (CDTD) using frequency-domain equalization (FDE) based on the minimum mean squire error (MMSE) criterion is a powerful technique to improve the bit error rate (BER) performance of direct sequence code division multiple access (DS-CDMA) signal transmission in a frequency-selective fading channel. CDTD simultaneously transmits the same signal from different antennas after adding different cyclic delays to increase the number of equivalent propagation paths and hence achieves the large frequency diversity gain. The BER performance of DS-CDMA with CDTD using MMSE-FDE is limited by the residual inter-chip interference (ICI) after FDE. In this paper, we propose a new FDE suitable for CDTD, which can simultaneously perform equalization and de-spreading in the frequency-domain. We evaluate the achievable BER performance by computer simulation. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | DS-CDMA / cyclic delay transmit diversity (CDTD) / frequency-domain equalization (FDE) |
| Paper # | RCS2007-189 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2008/2/27(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| 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 of Frequency-Domain Equalization for DS-CDMA Cyclic Delay Transmit Diversity |
| Sub Title (in English) | |
| Keyword(1) | DS-CDMA |
| Keyword(2) | cyclic delay transmit diversity (CDTD) |
| Keyword(3) | frequency-domain equalization (FDE) |
| 1st Author's Name | Tetsuya YAMAMOTO |
| 1st Author's Affiliation | Dept. of Electrical, Information and Physics Engineering, School of Engineering, Tohoku University() |
| 2nd Author's Name | Kazuki TAKEDA |
| 2nd Author's Affiliation | Dept. of Electrical and Communication Engineering, Graduate School of Engineering, Tohoku University |
| 3rd Author's Name | Fumiyuki ADACHI |
| 3rd Author's Affiliation | Dept. of Electrical and Communication Engineering, Graduate School of Engineering, Tohoku University |
| Date | 2008-03-05 |
| Paper # | RCS2007-189 |
| Volume (vol) | vol.107 |
| Number (no) | 518 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |