| Presentation | 2008-03-05 BER Performance of DS-CDMA Frequency-domain Turbo Equalization with2-Step Maximum Likelihood Channel Estimation Yohei KOJIMA, Kazuaki TAKEDA, Fumiyuki ADACHI, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Frequency-domain equalization (FDE) based on the minimum mean square error (MMSE) criterion and frequency-domain inter-chip interference (ICI) cancellation can be incorporated into turbo decoding (this is called the frequency-domain turbo equalization in this paper) to improve the bit error rate (BER) performance for direct sequence code division multiple access (DS-CDMA). DS-CDMA turbo equalization requires accurate channel estimation. So far, the ideal channel estimation was assumed. The performance improvement by the frequency-domain turbo equalization depends on the channel estimation accuracy. Recently, we proposed a 2-step maximum likelihood channel estimation (MLCE) for DS-CDMA with FDE. In this paper, we apply 2-step MLCE to DS-CDMA frequency-domain turbo equalization and evaluate by computer simulation the BER performance improvement in a frequency selective Rayleigh fading channel. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | DS-CDMA / frequency-domain equalization / frequency-domain ICI canceller / frequency-domain turbo equalization / channel estimation |
| Paper # | RCS2007-186 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2008/2/27(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) | BER Performance of DS-CDMA Frequency-domain Turbo Equalization with2-Step Maximum Likelihood Channel Estimation |
| Sub Title (in English) | |
| Keyword(1) | DS-CDMA |
| Keyword(2) | frequency-domain equalization |
| Keyword(3) | frequency-domain ICI canceller |
| Keyword(4) | frequency-domain turbo equalization |
| Keyword(5) | channel estimation |
| 1st Author's Name | Yohei KOJIMA |
| 1st Author's Affiliation | Dept. of Electrical and Communication Engineering, Graduate School of Engineering, Tohoku University() |
| 2nd Author's Name | Kazuaki 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 # | RCS2007-186 |
| Volume (vol) | vol.107 |
| Number (no) | 518 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |