Patent ID: 8787857

Claim:
A receiving apparatus, comprising: a memory that stores parameters corresponding to equally-spaced parallel lines forming a solution space derived based on a first time interval and a second time interval in a coordinate space in which first phase rotation at the first time interval of a first reference signal included in a reception signal of a first channel is defined as a first axis and second phase rotation at the second time interval of a second reference signal included in a reception signal of a second channel is defined as a second axis; a selecting device that selects a line that is closest to a coordinate point in the solution space, the coordinate point being represented by a first observation value of the first phase rotation and a second observation value of the second phase rotation; an acquiring device that acquires the parameters corresponding to the line selected by the selecting device from the memory; and an estimating device that estimates, based on the parameters acquired by the acquiring device, the first observation value, and the first time interval or the parameters acquired by the acquiring device, the second observation value, and the second time interval, frequency deviations of the reception signals.