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Recently, a blind subspace channel estimation algorithm in which using only a few received OFDM blocks is proposed. Based on this earlier work, we introduce a novel subspace-based blind carrier frequency offset (CFO) estimation method for OFDM systems. The CFO is obtained by solving the nullspace of the proposed rank-reduced matrix and the CFO estimate is given in closed form. Moreover, we do not...
The estimation of carrier frequency offset (CFO) is an important topic in broadband communication systems. It is known that the accuracy of CFO estimation will be affected by the existence of the in-phase and quadrature-phase (I/Q) imbalance. This paper proposes a novel algorithm for CFO estimation in the presence of I/Q imbalance. The estimation problem is solved by using a simple matrix approach...
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