Channel estimation device, receiving device, channel estimation method, channel estimation program, and recording medium

A channel estimation device to which a received signal of a digitally modulated wave upon which a predetermined DC component is superimposed is inputted, comprising:

• a sum of products calculation unit performing sum of products calculation of a predetermined plural tap number of items of tap data and a same predetermined plural tap number of coefficients;
• a tap sum total calculation unit calculating a sum total of said predetermined plural tap number of items of tap data;
• a replica calculation unit calculating a replica signal on the basis of a sum of products calculation result, said sum total of said predetermined tap number of items of tap data, and a correction coefficient;
• a residual calculation unit calculating a residual signal as the difference between said replica signal and said received signal;
• a coefficient updating unit updating said predetermined plural tap number of coefficients on the basis of said predetermined plural tap number of items of tap data and said residual signal;
• and
• a correction coefficient calculation unit calculating said correction coefficient on the basis of said residual signal,
• wherein said tap data is either a data symbol before superimposition of said DC component, or an evaluation thereof.