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Previously, a joint estimation method [1] of carrier frequency offset and channel in orthogonal frequency division multiplexing (OFDM) systems was proposed based on the maximum likelihood (ML) criterion. However, the proposed processing structure may not be suitable for current OFDM regular implementations. In the paper, the processing structure is modified and simulations are conducted for the new...
In some frame-based OFDM applications such as WLAN and WMAN, the channel estimation is accomplished through the aid of the preamble. By means of the preamble, the estimated channel is only well applied under the assumption of a static channel status within the frame. If we consider a time-varying channel status in those applications, the channel tracking has to be performed without the aid of pilots...
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