Wireless LAN White Papers
Blind OFDM Channel Estimation Through Simple Linear Precoding
Overview A novel approach of blind channel estimation for OFDM systems is proposed. A linear transformation is applied on each block before it enters the OFDM system. The transform imposes a correlation structure on the transmitted blocks, which is exploited at the receiver to recover the channel via simple cross-correlation operations. The proposed approach is computationally simple and converges fast, which makes it a good candidate for estimation of fast-varying channels. Its performance is tested analytically, through a mean-square error analysis, and also via simulations. Results show that it compares favorably to the training based scheme used in the IEEE 802.11a wireless standard.
| Publisher | Drexel University | File Format | |
|---|---|---|---|
| Date Published | April 2003 | ||
| Format | White Papers | ||
| Topics | |||
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