| Presentation | 2005-11-17 OFDM adaptive antenna array with frequency-domain weight updating and delay time-domain channel estimation Osamu NAKAMURA, Shinsuke TAKAOKA, Eisuke KUDOH, Fumiyuki ADACHI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Adaptive antenna array is attractive for uplink signal transmission in mobile communication systems since it can suppress the multiaccess interference. Adaptive antenna array in OFDM systems is classified into Pre- and Post-FFT type. It is well known that the Pre-FFT type achieves faster weight convergence than Post-FFT type because Pre-FFT type can update weight at each received sampling. On the other hand, we showed that frequency-domain updating also could achieve a fast weight convergence so that it could update weight the number of subcarriers times per OFDM symbol under ideal channel estimation. However, this proposal needs channel state information for reference signal and channel estimation error may degree the BER performance. In this paper, we show by computer simulation that a fast weight convergence can be achieved and a good tracking ability against fading can be obtained using delay time-domain channel estimation. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | OFDM / Adaptive antenna array / Adaptive algorithm |
| Paper # | RCS2005-110 |
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| Committee | RCS |
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| Conference Date | 2005/11/10(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) | OFDM adaptive antenna array with frequency-domain weight updating and delay time-domain channel estimation |
| Sub Title (in English) | |
| Keyword(1) | OFDM |
| Keyword(2) | Adaptive antenna array |
| Keyword(3) | Adaptive algorithm |
| 1st Author's Name | Osamu NAKAMURA |
| 1st Author's Affiliation | Electrical and Communication Engineering, Graduate School of Engineering, Tohoku University() |
| 2nd Author's Name | Shinsuke TAKAOKA |
| 2nd Author's Affiliation | Electrical and Communication Engineering, Graduate School of Engineering, Tohoku University |
| 3rd Author's Name | Eisuke KUDOH |
| 3rd Author's Affiliation | Electrical and Communication Engineering, Graduate School of Engineering, Tohoku University |
| 4th Author's Name | Fumiyuki ADACHI |
| 4th Author's Affiliation | Electrical and Communication Engineering, Graduate School of Engineering, Tohoku University |
| Date | 2005-11-17 |
| Paper # | RCS2005-110 |
| Volume (vol) | vol.105 |
| Number (no) | 411 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |