Patent ID: 8250422

Claim:
A receiving device comprising: a radio receiving unit configured to receive radio signals transmitted from a plurality of transmitting antennas using a plurality of receiving antennas and to output the received signals as digital signals; a frequency control unit configured to detect a frequency error contained in the received signals and to correct the frequency error; a channel estimation unit configured to estimate a channel matrix, of which each element corresponds to a respective pair of a transmitting antenna and a receiving antenna, the transmitting antenna and the receiving antenna each being one of the pluralities of transmitting antennas and receiving antennas; an equalization unit configured to equalize the error corrected received signals by using the channel matrix estimated by the channel estimation unit; a demodulation and decoding unit configured to demodulate and decode the received signals equalized by the equalization unit; and an error estimation unit configured to estimate a channel variation component indicating temporal variation of characteristics of each channel and a phase error component indicating phase error remaining in the received signals following frequency error correction by the frequency control unit, wherein the estimation is based on a relational expression that includes the estimated channel matrix, the received signals, and a decoding result by the demodulation and decoding unit or an equalization result by the equalization unit.