Decision feedback estimation and tracking of carrier frequency offsets for ICI self-cancellation based OFDM systems


The intercarrier interference (ICI) self-cancellation schemes cannot apply to QAM-OFDM systems due to a constellation rotation caused by carrier frequency errors. We propose a decision feedback estimation (DFE) scheme, based on the self-cancellation scheme, to perform a simple and bandwidth-efficient estimation and tracking of the frequency offsets. The… (More)

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