Browsing by Subject "orthogonal frequency-division multiplexing (OFDM)"
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Publisher and Date:(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2021)It is well-known that time-varying channels can provide time diversity and improve error rate performance compared to time-invariant fading channels. However, exploiting time diversity requires very accurate channel estimates at the receiver. In order to reduce the number of unknown channel coefficients while estimating the time-varying channel, basis expansion models can be used along with long transmission frames that contain multiple orthogonal frequency division multiplexing (OFDM) symbols ...