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Wireless communication systems typically employ a repetitive preamble in each slot which is used for parameter acquisition. The repetitive preamble is useful for estimating the carrier frequency offset (CFO), usually based on the autocorrelation of the received signal. In this paper, we derive a family of novel data-aided CFO estimators. The proposed estimators are based on a new autocorrelation function...
Adaptive beamforming is known to be sensitive to array system mismatch, especially when the sample covariance matrix is used and the desired signal is present in the training snapshot. To alleviate the sensitivity, in this paper, the sample covariance matrix is replaced by the interference-plus-noise covariance matrix (INCM), which is reconstructed by exploiting the cyclostationarity of interference...
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