| Presentation | 2008-05-30 A Study of Frequency-domain Joint Equalization/Despreading for Multi-code DS-CDMA Using Cyclic Delay Transmit Diversity And Receive Antenna 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 square 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. However, despreading is done after transforming the frequency-domain signal which applied MMSE-FDE into a time-domain signal and the presence of the residual inter-chip interference (ICI) limits the improvement of the BER performance of DS-CDMA with CDTD. Recently, we proposed a new frequency-domain joint equalization and despreading suitable for CDTD, which can simultaneously perform equalization and despreading in the frequency-domain, assuming single-code DS-CDMA signal transmission. In this paper, we study frequency-domain joint equalization and despreading for multi-code DS-CDMA using CDTD and receive antenna diversity. The conditional BER analysis is presented. The theoretical average BER performance in a frequency-selective Rayleigh fading is evaluated by Monte-Carlo numerical computation method using the derived conditional BER and is confirmed by computer simulation of the signal transmission. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | DS-CDMA / cyclic delay transmit diversity (CDTD) / frequency-domain equalization (FDE) |
| Paper # | RCS2008-8 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2008/5/22(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 Study of Frequency-domain Joint Equalization/Despreading for Multi-code DS-CDMA Using Cyclic Delay Transmit Diversity And Receive Antenna 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 and Communication Engineering, Graduate 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 | 2008-05-30 |
| Paper # | RCS2008-8 |
| Volume (vol) | vol.108 |
| Number (no) | 61 |
| Page | pp.pp.- |
| #Pages | 6 |
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