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MMSE and adaptive prediction of time-varying channels for OFDM systems
IEEE Transactions on Wireless Communications
We propose decision-directed channel predictors for orthogonal frequency-division multiplexing (OFDM) communications over time-varying channels. Channel prediction is capable of yielding up-to-date channel state information even without regular transmission of pilot symbols. It is thus potentially useful for delay-free equalization, antenna combining, space-time decoding, adaptive modulation, adaptive power control, and adaptive transmit antenna diversity. We derive a minimum mean-square errordoi:10.1109/twc.2004.843055 fatcat:6atk76kgorfjfhtmuns7iuomze