| Presentation | 2003/8/15 An Accurate Timing Recovery Method Employing Channel Estimation for OFDM Packet Transmission Takayuki SHIZUNO, Satoshi SUYAMA, Hiroshi SUZUKI, Kazuhiko FUKAWA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper proposes an accurate timing recovery method for OFDM packet transmissions, which can compensate for a timing recovery error by employing channel estimation. The OFDM mobile communications suffer from inter-multicarrier interferences due to the large timing error even when multipath delay time is less than guard interval (GI). With the delay time greater than GI, the performance of timing recovery deteriorates severely. To solve such a problem, the proposed timing recovery method carries out the following procedures: (I) it performs tentative timing recovery by calculating auto-correlation of received signals, (ii) its channel estimator estimates a channel impulse response by using the tentative timing, (iii) dominant path components are extracted from the estimation result, and the tentative timing is adjusted, and the number of taps of a transversal filter that a channel estimator for signal detection uses is also determined. In order to verify performances of the proposed timing recovery, it is applied to the OFDM turbo equalizer and, computer simulations are conducted with channel conditions where the maximum delay time is nearly equal to or much greater than GI. It is demonstrated that the equalizer with the accurate timing recovery scheme can achieve as good PER performances as the one with the ideal timing. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Mobile communications / OFDM / timing recovery / channel estimation |
| Paper # | RCS2003-124 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2003/8/15(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) | An Accurate Timing Recovery Method Employing Channel Estimation for OFDM Packet Transmission |
| Sub Title (in English) | |
| Keyword(1) | Mobile communications |
| Keyword(2) | OFDM |
| Keyword(3) | timing recovery |
| Keyword(4) | channel estimation |
| 1st Author's Name | Takayuki SHIZUNO |
| 1st Author's Affiliation | Tokyo Institute of Technology() |
| 2nd Author's Name | Satoshi SUYAMA |
| 2nd Author's Affiliation | Tokyo Institute of Technology |
| 3rd Author's Name | Hiroshi SUZUKI |
| 3rd Author's Affiliation | Tokyo Institute of Technology |
| 4th Author's Name | Kazuhiko FUKAWA |
| 4th Author's Affiliation | Tokyo Institute of Technology |
| Date | 2003/8/15 |
| Paper # | RCS2003-124 |
| Volume (vol) | vol.103 |
| Number (no) | 254 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |