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High mobility in OFDM systems based on FFT

Publication by Nasimi Eldarov, Guoping Tan, Thorsten Herfet
Published in 2015 IEEE International Conference on Consumer Electronics (ICCE), 2015


A high mobility algorithm is introduced for OFDM systems based on the FFT which can compensate Doppler shifts in time-variant channels with low complexity. We first propose a channel matrix inversion algorithm with a complexity similar to FFT and then introduce a channel matrix construction based on matching pursuit algorithm.