| 摘要 |
PROBLEM TO BE SOLVED: To make high-precision phase corrections based upon a phase shift detected from a pilot subcarrier while taking tolerance of a phase noise into consideration. SOLUTION: When tolerance of a random white noise is increased, a degree of equalization is increased to achieve convergence on a fixed phase shift value due to a residual frequency offset. When tolerance of a phase noise is increased, the degree of equalization is decreased to increase a weight of a detected value corresponding to an OFDM (Orthogonal Frequency Division Multiplexing) symbol. It is assumed that multi-level modulation is performed when a reception packet with high SNR is received, and phase correction of high precision can be made by more following up a low-frequency part of the white noise. COPYRIGHT: (C)2008,JPO&INPIT
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