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In this paper, a blind frequency offset estimator for orthogonal frequency division multiplexing (OFDM) systems over frequency selective fading channels based on modeling the unknown channel fading gains as deterministic variables is proposed. In this estimator, the received time domain OFDM samples are first partitioned into subsets, in which neighboring samples are uncorrelated, leading to a tri-diagonal...
A new method to reduce the number of multipliers in the design of sharp FIR filters by frequency-response masking technique is presented. The success of the proposed method is based on a modified frequency-response masking approach where one of the subfilters in the approach is implemented by interpolated finite-impulse response (IFIR) technique. We have shown by example that the proposed method yields...
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