Carrier frequency deviation estimating apparatus and carrier wave frequency deviation estimating method

摘要

In related carrier frequency deviation estimation devices, it is difficult to accurately estimate a frequency deviation over a wide range without causing an increase in power consumption. Therefore, this carrier frequency deviation estimation device comprises: a resampling means for converting an input signal into an oversampling signal obtained by oversampling at a plurality of times the symbol rate of the input signal; a time-varying vector calculation means for calculating a time-varying vector between two temporally continuous sample signals included in the oversampling signal; a filter means for calculating an average value of the time-varying vectors; and a frequency deviation estimation means for calculating a carrier frequency deviation estimation value on the basis of the average value.