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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Bo-Seok Seo Su-Chang Kim Jinwoo Park Jong-Tae Ihm |
| Copyright Year | 2001 |
| Description | Author affiliation: Res. Inst. for Inf. & Commun. Technol., Korea Univ., Seoul, South Korea (Bo-Seok Seo) |
| Abstract | A fast and low-complex frequency synchronization method with wide acquisition range of frequency offset is proposed for orthogonal frequency division multiplexing (OFDM) systems. The training sequence is composed of two OFDM symbols, one for fine estimate and the other for coarse estimate of the frequency offset. The symbol for the coarse estimate is designed in such a way that the argument of the correlation of each subcarrier with the adjacent one and the predetermined difference component is proportional to the frequency offset. The coarse estimator requires only one correlation operation in the frequency domain, hence its computational complexity is similar to the conventional time domain methods. The maximum acquisition range of the frequency is M times the subcarrier spacing when M-ary phase shift keying (M-PSK) modulation is used for the subcarriers. Simulation results show that the error rate of the coarse estimate is very low and the proposed scheme reveals performance approaching the Cramer-Rao lower bound at reasonable signal-to-noise ratio (SNR) level. |
| Starting Page | 1120 |
| Ending Page | 1124 |
| File Size | 359921 |
| Page Count | 5 |
| File Format | |
| ISBN | 0780370058 |
| ISSN | 10903038 |
| DOI | 10.1109/VTC.2001.956949 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2001-10-07 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Frequency synchronization OFDM Frequency estimation Frequency domain analysis Computational complexity Frequency shift keying Phase shift keying Phase modulation Computational modeling Error analysis |
| Content Type | Text |
| Resource Type | Article |
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