| Presentation | 2002/8/22 Frequency Synchronization for Offset over the Subcarrier Spacing in OFDM Systems Kenkichi TAKAHASHI, Takahiko SABA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | For a frequency offset estimation in orthogonal frequency division multiplexing (OFDM) systems, a method using correlation of the guard interval (GI) is proposed. However, this method estimates only the offset less than a half of the subcarrier spacing. This paper proposes frequency synchronization for the offset larger than the subcarrier spacing in OFDM systems under multipath fading channel. To estimate the offset larger than the subcarrier spacing, our proposed method uses an OFDM symbol which has some identical signals repeatedly within the OFDM symbol period. Frequency offset is estimated by performing correlation of this OFDM symbol. Moreover, the estimation performance is improved by using the principle of our previously proposed symbol timing estimation, which eliminates the effect of intersymbol interference (ISI). Simulation results show that the proposed method achieves good estimation performance and the degradation of system performance caused by frequency offset is sufficiently suppressed in the region of E_b/N_O greater than 10 dB. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | OFDM / Frequency Offset / Correlation / Multipath Fading |
| Paper # | RCS2002-142 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2002/8/22(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) | Frequency Synchronization for Offset over the Subcarrier Spacing in OFDM Systems |
| Sub Title (in English) | |
| Keyword(1) | OFDM |
| Keyword(2) | Frequency Offset |
| Keyword(3) | Correlation |
| Keyword(4) | Multipath Fading |
| 1st Author's Name | Kenkichi TAKAHASHI |
| 1st Author's Affiliation | Dept. of Computer Science, Faculty of Information and Computer Science, Chiba Institute of Technology() |
| 2nd Author's Name | Takahiko SABA |
| 2nd Author's Affiliation | Dept. of Computer Science, Faculty of Information and Computer Science, Chiba Institute of Technology |
| Date | 2002/8/22 |
| Paper # | RCS2002-142 |
| Volume (vol) | vol.102 |
| Number (no) | 281 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |