RECEIVER DEVICE, TRANSMIT/RECEIVE TERMINAL, PROPAGATION DELAY TIME MEASUREMENT METHOD AND COMPUTER PROGRAM

摘要

The objective of the present invention is to measure accurate propagation delay time even if channel estimate values are interpolated in a frequency domain. [Solution] This receiver device is provided with: channel estimation means which obtains channel estimate values for a frequency domain on the basis of pilot symbols disposed in an OFDM subcarrier; interpolation means which performs interpolation so that the number of samples of channel estimate values obtained by the channel estimate means is a power of 2; transformation means which transforms the channel estimate values interpolated by the interpolation means into a time domain to obtain a delay profile; and power peak position detection means which detects a power peak position of the delay profile so as to obtain a delay propagation time. The power peak position detection means references the signal power of the portion interpolated by the interpolation means in order to detect a suitable power peak position in the delay profile.