Patent ID: 9231811
Filing Date: 2016-01-05
CPC Classification: G01R,H04J,H04L,H04W

Claim Text:
1. A receiver device receiving a signal transmitted by means of an orthogonal frequency division multiplexing system, comprising: a channel estimation means which calculates channel estimation values in a frequency domain based on pilot symbols arranged in orthogonal frequency division multiplexing subcarriers; an interpolation means which carries out an interpolation on the channel estimation values calculated by way of the channel estimation means to make the number of samples become a power of 2; a transforming means which transforms the channel estimation values, interpolated by the interpolation means, into a time domain to obtain a delay profile; and a power peak position detecting means which detects a power peak position in the delay profile to calculate a propagation delay time of the signal transmitted; wherein the power peak position detecting means refers to a signal power of a part interpolated by the interpolation means to detect an appropriate power peak position in the delay profile.