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Complexity-efficient time interpolator for channel estimation in OFDM systems

Complexity-efficient time interpolator for channel estimation in OFDM systems

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Complexity-efficient time interpolation for pilot-symbol-assisted channel estimation in OFDM systems is presented. The method exploits a ‘fraction l+1’-step linear prediction, which leads to no need of symbol data buffers required in a conventional method to match an estimate of channel with the corresponding symbol data due to the difference of their process latencies. The simulation demonstrates a performance comparable to or better than that of the conventional method.

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