| 摘要 |
PROBLEM TO BE SOLVED: To provide a channel estimation apparatus and a channel estimation program capable of improving reception quality by increasing accuracy of estimation.SOLUTION: A radio receiver includes a channel estimation part 23 for estimating each transmission channel according to a pilot signal transmitted from two transmission antennas to one reception antenna. The channel estimation part includes an averaging part 303 for estimating a transmission channel at an estimation target position, by averaging transmission channels at three positions consist of a transmission channel at the estimation target position where identical pilot signals are transmitted from two transmission antennas, and transmission channels at both neighboring sides of the estimation target position, where a different pilot signal is transmitted from either one of the two transmission antennas when a transmission signal is expressed in a two-dimensional pattern in which one axis is a subcarrier and the other axis is an OFDM symbol, and two dimensional interpolation parts 304 and 305 for estimating transmission channels on which pilot signals are transmitted from each transmission antenna, based on a transmission channel estimated by the averaging part 303. |
