Modems White Papers
ICI Cancellation Based Channel Estimation for OFDM Systems
Overview Orthogonal Frequency Division Multiplexing OFDM), which is a multicarrier modulation scheme, splits high data rate information symbols into lower rate parallel data streams and transmits this parallel information on different orthogonal carriers. The loss of orthogonality among subcarriers causes inter-carrier interference (ICI), which affects both channel estimation and detection of OFDM data symbols. Channel estimation error degrades the performance of coherent receiver limiting capacity, data rate and performance of the overall OFDM system. This paper proposes a novel frequency-domain channel estimator, which mitigates the effects of ICI by jointly finding the frequency offset and channel frequency response (CFR).
| Publisher | University of South Florida | File Format | |
|---|---|---|---|
| Date Published | April 2008 | Downloads | 2 |
| Format | White Papers | ||
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