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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Haiyun Tang Lau, K.Y. Brodersen, R.W. |
| Copyright Year | 2002 |
| Description | Author affiliation: Berkeley Wireless Res. Center, CA, USA (Haiyun Tang; Lau, K.Y.; Brodersen, R.W.) |
| Abstract | An interpolation-based maximum likelihood channel estimation scheme using OFDM pilot symbols is proposed. Instead of direct estimation of the frequency response on each subchannel, an interpolation filter is used on the pilot symbols to estimate a smaller set of coefficients that are sufficient to characterize the multipath channel. The actual frequency responses on the subchannels are then computed through inverse filtering of these coefficients. Because the same amount of signal energy is used to estimate a reduced set of unknowns, the estimation accuracy is improved. The scheme is well suited for packet-based OFDM communication systems where pilot symbols instead of pilot tones are usually used at the beginning of each packet for fast synchronization and channel estimation. |
| Starting Page | 1860 |
| Ending Page | 1864 |
| File Size | 242292 |
| Page Count | 5 |
| File Format | |
| ISBN | 0780376323 |
| DOI | 10.1109/GLOCOM.2002.1188521 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2002-11-17 |
| Publisher Place | Taiwan |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Maximum likelihood estimation Channel estimation OFDM Frequency estimation Frequency response Interpolation Filters Multipath channels Filtering Frequency synchronization |
| Content Type | Text |
| Resource Type | Article |
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