A first wireless communication apparatus includes: a transceiver configured to: receive a radio frequency (RF) signal via a channel from a second wireless communication apparatus, and downconvert the RF signal to generate a received signal that has a lower frequency than a frequency of the RF signal; and a processing circuit configured to: compare the received signal with a reference signal to generate a compensation index based on a comparison result, and compensate an initial first arrival path (FAP) time index of the received signal based on the compensation index to generate a final FAP time index.