Patent ID: 8064328

Claim:
A channel estimation device in wireless communication with use of a plurality of subcarriers for communication, comprising: a first channel estimation section which performs channel estimation for each subcarrier based on pilot signals mapped to each subcarrier; a second channel estimation section which further performs channel estimation for each subcarrier using channel estimation values estimated by the first channel estimation section; and a channel selection section which selects and outputs first and second channel estimation values estimated by said first and second channel estimation sections, according to the subcarrier, wherein said second channel estimation section includes: a first conversion section which converts channel estimation values estimated by the first channel estimation section into time-domain channel estimation values; a noise suppression section which suppresses noise included in the time-domain channel estimation values; and a second conversion section which converts noise-suppressed time-domain channel estimation values into frequency-domain channel estimation values, and wherein said channel selection section selects the channel estimation values estimated by said first channel estimation section as channel estimation values for subcarriers at both ends of an effective band, selects the channel estimation values estimated by said second channel estimation section as channel estimation values for subcarriers other than the subcarriers at both ends of the effective band, and outputs the selected values.