FIELD: radio engineering, communications.
SUBSTANCE: signal processing device comprises a processing unit arranged as capable of performing a process of detection of a carrier shift value for detection of a carrier shift value making a carrier error used for demodulation of a multiplexing signal with orthogonal frequency division known as an OFDM signal; and a correction unit arranged as capable of correction of the OFDM signal in compliance with the carrier shift value. The OFDM signal includes a signal of the first preamble containing subcarriers, and a signal of the second preamble containing subcarriers, a gap between which is narrower than the gap between subcarriers contained in the signal of the first preamble. The signal of the second preamble includes pilot signals, which represent available signals arranged with intervals with a certain quantity of subcarriers. The processing unit detects a value of subcarrier shift using correlation of subcarriers contained in one such signal of the second preamble.
EFFECT: quick assessment of carrier errors with required accuracy.
16 cl, 32 dwg
