Every field where it becomes the unit where the pilot signal

摘要

PPROBLEM TO BE SOLVED: To estimate a propagation path corresponding to a variety of propagation path environments in a multilevel connection system using a multi-carrier OFDM system including OFDM (Orthogonal Frequency Division Multiplexing) and OFDMA (Orthogonal Frequency Division Multiplexing Access). PSOLUTION: A propagation path estimation method includes: a procedure (means) for estimating propagation paths with respect to two or more pilot signals included in an area by area to be a unit by which a pilot signal is disposed in carrier disposition of a multi-carrier system on the basis of a corresponding receiving signal; and a procedure (means) for obtaining a propagation path estimation value by multiple kinds of linear interpolation of different interpolation intervals at least with respect to either a frequency axis direction and a time axis direction regarding respective data sub-carriers belonging to the area on the basis of the propagation path estimation value obtained about the pilot signal. Any of transmission path estimation values obtained by multiple kinds of linear interpolation is selectively provided for propagation path compensation processing. PCOPYRIGHT: (C)2010,JPO&INPIT