| 摘要 |
A Doppler frequency calculating apparatus is arranged to calculate a Doppler frequency, which is the magnitude of a time-dependent fluctuation of the characteristic of the transmission path through which an orthogonal frequency-division multiplexing (OFDM) signal is transmitted. The Doppler frequency calculating apparatus includes a received signal point memory section storing the received signal point of the sub-carrier having a reference carrier signal of the OFDM signal, a modulated component eliminating section eliminating the modulated component from the received signal point stored in the received signal point memory section, and a Doppler frequency calculating section calculating a Doppler frequency by performing frequency analysis on the received signal point of each sub-carrier from which the modulated component has been eliminated by the modulated component eliminating section. |
