OFDM communication reception device

摘要

An reception device includes: a fast-fourier-transform (FFT) circuit to FFT a first Orthogonal Frequency Division Multiplexing (OFDM) signal including a plurality of first symbols with a guard interval and a valid symbol using a plurality of FFT windows that includes different timings within a symbol length period; a propagation channel estimation circuit to extract pilot signals from the fast-fourier-transformed first OFDM signal, and estimate a plurality of propagation channel characteristics of the plurality of first symbols based on the pilot signals; and a propagation channel compensation circuit to obtain a propagation channel characteristic of a second symbol without a pilot signal based on the plurality of propagation channel characteristics and remove the propagation channel characteristic of the second symbol from a second OFDM signal obtained by fast-fourier-transforming the second symbol.

主权项

1. A reception device comprising:
a fast-fourier-transform (FFT) circuit to FFT a first Orthogonal Frequency Division Multiplexing (OFDM) signal using a plurality of FFT windows that includes different timings within a symbol length period and a second OFDM signal, the first OFDM signal including a plurality of first symbols with a pilot signal and a guard interval, the second OFDM signal including a second symbol without the pilot signal; a propagation channel estimation circuit to extract the pilot signals from the fast-fourier-transformed first OFDM signals, and estimate a plurality of propagation channel characteristics of the plurality of first symbols based on the pilot signals; and a propagation channel compensation circuit to obtain a propagation channel characteristic of the second symbol based on the plurality of propagation channel characteristics, and remove the propagation channel characteristic of the second symbol from the fast-fourier-transformed second OFDM signal.