CHANNEL PRESUMING SYSTEM AND CHANNEL PRESUMING METHOD

摘要

A frequency offset determined by a frequency offset detecting circuit (2051) is outputted to a slot-based phase rotation correcting circuit (207) and symbol-based phase rotation correcting circuits (209 and 210). The maximum Doppler frequency (fD) determined by an fD detecting circuit (2052) is outputted to a weighting coefficient calculating circuit (208). The symbol-based phase rotation correcting circuits (209 and 210) calculate a phase rotation correction value DELTA theta symbol for each symbol on the basis of the phase rotation of the frequency offset, and outputs it to multipliers (206 and 201). The slot-based phase rotation correcting circuit (207) calculates the phase rotation correction DELTA theta slot of each slot on the basis of the phase rotation of the frequency offset, and outputs it to a weighting adder circuit (204). The weighting coefficient calculating circuit (208) calculates a weighting coefficient ( alpha ) according to the detected fD value, and outputs it to the weighting adder circuit (204).