Improved timing estimation for OFDM systems using preambles with repetitive patterns

We propose an improved timing estimation method for orthogonal frequency-division multiplexing (OFDM) systems that employ a preamble with time-domain repetitive patterns. The proposed method exploits the unique correlation property of the preamble including its cyclic prefix. Numerical results show that the proposed scheme is robust in fading multipath channels, achieving better performance than the existing methods.