| Presentation | 2002/2/27 Pilot-aided Frequency-domain Equalization with Threshold Detection for OFDM-CDMA Down Link Transmissions in A Frequency Selective Fading Channel Tomoki SAO, Fumiyuki ADACHI, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In OFDM-CDMA down link, frequency equalization is necessary at the receiver to restore orthgonality among different users. But the noise enhancement due to orthgonality restoration degrades transmission performance. In this paper, pilot-aided frequency equalization with threshold detection (TD) is presented that can effectively suppress the noise enhancement. There is an optimal threshold that can minimize the bit error rate (BER) for a given received E_b/N_0. The average BER performance of OFDM-CDMA down link transmissions using TD equalization is evaluated by computer simulation. It is found that TD equalization using optimum detection threshold can significantly reduce the BER floor and outperforms DS-CDMA with ideal rake combining. The achievable BER performance is also compared with those of ORC, CE, and MMSEC equalization techniques. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | OFDM / CDMA / frequency-domain equalization / doubly selective fading channel |
| Paper # | RCS2001-281 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2002/2/27(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) | Pilot-aided Frequency-domain Equalization with Threshold Detection for OFDM-CDMA Down Link Transmissions in A Frequency Selective Fading Channel |
| Sub Title (in English) | |
| Keyword(1) | OFDM |
| Keyword(2) | CDMA |
| Keyword(3) | frequency-domain equalization |
| Keyword(4) | doubly selective fading channel |
| 1st Author's Name | Tomoki SAO |
| 1st Author's Affiliation | Electrical and Communication Engineering, Graduate School of Engineering, Tohoku University() |
| 2nd Author's Name | Fumiyuki ADACHI |
| 2nd Author's Affiliation | Electrical and Communication Engineering, Graduate School of Engineering, Tohoku University |
| Date | 2002/2/27 |
| Paper # | RCS2001-281 |
| Volume (vol) | vol.101 |
| Number (no) | 682 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |