A maximum likelihood sequence estimation circuit comprising: a signal extraction unit to estimate a reception sample signal including a preceding wave component and a reception sample signal including a delayed wave component from a plurality of reception sample signals sampled from a reception signal at sample intervals shorter than symbol intervals, and to extract, based on an estimation result, both first reception sample signals and second reception sample signals from the plurality of reception sample signals at the symbol intervals; and a maximum likelihood sequence estimation unit to estimate a maximum likelihood sequence using the first reception sample signals extracted and the second reception sample signals extracted, wherein the signal extraction unit is adapted to calculate correlation power by computing correlations between the reception sample signals and a known signal, and to estimate the reception sample signal including the preceding wave component and the reception sample signal including the delayed wave component based on the correlation power calculated, wherein the signal extraction unit is adapted to determine a first beginning address and a second beginning address based on addresses of the reception sample signals whose correlation power is equal to or larger than a predetermined threshold, to set as the first reception sample signals, the reception sample signals extracted at the symbol intervals starting from the reception sample signal corresponding to the first beginning address, and to set, as the second reception sample signals, the reception sample signals extracted at the symbol intervals starting from the reception sample signal corresponding to the second beginning address, from the reception sample signals, and wherein if timings of extracting the first reception sample signals overlap with timings of extracting the second reception sample signals, the signal extraction unit is adapted to add a fixed sample offset to the first beginning address or the second beginning address. a signal extraction unit to estimate a reception sample signal including a preceding wave component and a reception sample signal including a delayed wave component from a plurality of reception sample signals sampled from a reception signal at sample intervals shorter than symbol intervals, and to extract, based on an estimation result, both first reception sample signals and second reception sample signals from the plurality of reception sample signals at the symbol intervals; and a maximum likelihood sequence estimation unit to estimate a maximum likelihood sequence using the first reception sample signals extracted and the second reception sample signals extracted, wherein the signal extraction unit is adapted to calculate correlation power by computing correlations between the reception sample signals and a known signal, and to estimate the reception sample signal including the preceding wave component and the reception sample signal including the delayed wave component based on the correlation power calculated, wherein the signal extraction unit is adapted to determine a first beginning address and a second beginning address based on addresses of the reception sample signals whose correlation power is equal to or larger than a predetermined threshold, to set as the first reception sample signals, the reception sample signals extracted at the symbol intervals starting from the reception sample signal corresponding to the first beginning address, and to set, as the second reception sample signals, the reception sample signals extracted at the symbol intervals starting from the reception sample signal corresponding to the second beginning address, from the reception sample signals, and wherein if timings of extracting the first reception sample signals overlap with timings of extracting the second reception sample signals, the signal extraction unit is adapted to add a fixed sample offset to the first beginning address or the second beginning address.