OFDM RECEIVER

摘要

PROBLEM TO BE SOLVED: To improve a signal transmission rate by enhancing a processing speed of a frequency offset detection circuit. SOLUTION: A phase information generator 109 detects a phase difference depending on a quadrant to which a phase discriminated by an absolute value of a common-mode component and an absolute value of a quadrature component of a received signal before FFT processing belongs and calculates a frequency offset by subtracting phase information of the received signal from phase information of one preceding symbol. The frequency offset can be compensated by using a frequency offset calculated without multiplication processing.