Patent ID: 8451957

Claim:
A method comprising: receiving an orthogonal frequency-division multiplexing (OFDM)-based communication at a receiver; performing cyclic prefix (CP) correlation to determine a first correlation curve for the received OFDM-based communication; performing a first peak value detection on the first correlation curve to determine a time point, m*, at which a peak value occurs in the first correlation curve; generating a compensation curve corresponding to a contribution to the first correlation curve by a path present in the received OFDM-based communication, said path having its peak contribution to the first correlation curve at said time point m*; using said compensation curve for adjusting said first correlation curve to produce a second correlation curve; and performing a second peak value detection on the second correlation curve to determine a time point, m**, at which a peak value occurs in the second correlation curve, wherein the time point m** corresponds to a desired early path present in the received OFDM-based communication.