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In this paper, we propose a non-redundant preceding-assisted blind channel estimation scheme for the improper orthogonal frequency-division multiplexing (OFDM) systems. In the proposed scheme, a modified cross-correlation matrix of the augmented received signal is obtained by dividing the cross- correlation matrix of the even-indexed and odd-indexed OFDM received signal by the precoding matrix element-wise...
In this paper, we propose an improved blind channel estimation scheme for single-input single-output (SISO) orthogonal frequency-division multiplexing (OFDM) systems. In the proposed scheme, a modified cross-correlation matrix is obtained by dividing, element-wise, the cross-correlation matrix by the preceding matrix and then the channel vector is estimated by applying the principal eigenvector method...
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