RESIDUAL FREQUENCY ERROR ESTIMATION METHOD, AND RESIDUAL FREQUENCY ERROR ESTIMATION DEVICE

摘要

PROBLEM TO BE SOLVED: To enable residual frequency error estimation and compensation using only a part of pilot subcarriers in multi-carrier communication, and enable pilot subcarrier allocation at an optional subcarrier position.;SOLUTION: A clock frequency error estimation part 301 of a residual frequency error estimation device 3, calculates a phase based on: correction results of a received pilot subcarrier signal extracted by a pilot subcarrier extraction part 300 with a clock frequency error and a center frequency error; and a known transmission pilot subcarrier signal. Then, the clock frequency error estimation part 301 updates the clock frequency error by using a correction value for a clock frequency error obtained from a calculated phase for different subcarrier position. A center frequency error estimation part 302 updates a center frequency error based on the correction value for the clock frequency error, and a residual frequency error correction part 303 corrects a residual frequency error of the reception signal using the updated center frequency error and clock frequency error.;COPYRIGHT: (C)2015,JPO&INPIT