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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Lidong Wang Yonghui Yang Xuebo Chen |
| Copyright Year | 2008 |
| Description | Author affiliation: Univ. of Sci. & Technol. Liaoning, Anshan (Lidong Wang; Yonghui Yang; Xuebo Chen) |
| Abstract | Doubly-selective channel estimator for orthogonal frequency division multiplexing (OFDM) systems is proposed in this paper. Based on the generalized complex exponential basis expansion model (GCE-BEM), we describe the time-variant channel with time-invariant coefficients over multiple OFDM blocks. The time variation of channel destroys the orthogonality between subcarriers. The resulting channel matrix in the frequency domain is no longer diagonal, but the main interference comes from the near subcarriers. Based on this, we propose a least-square (LS) channel estimator with low pilot ratio. The proposed estimator is with the advantages of low pilot ratio and robustness against inter-carrier interference. |
| Starting Page | 1 |
| Ending Page | 4 |
| File Size | 141974 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781424421077 |
| DOI | 10.1109/WiCom.2008.198 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2008-10-12 |
| Publisher Place | China |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Time varying systems OFDM Channel estimation Interference Bandwidth Time-varying channels Frequency estimation Robustness Electronic mail Frequency domain analysis |
| Content Type | Text |
| Resource Type | Article |
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