| 摘要 |
PROBLEM TO BE SOLVED: To reduce deterioration in reception performance caused by influence of frequency selectivity interference caused by leakage power from an adjacent channel.SOLUTION: An OFDM reception device 100 receives a signal including an STF having a plurality of pilot sub-carriers and a plurality of null sub-carriers alternately allocated at a predetermined frequency interval in a transmission band and a data part that is time-multiplexed with the STF. The OFDM reception device 100 comprises: a null carrier extraction unit 151 for extracting signals having a plurality of null sub-carrier frequencies from a received signal; a power calculation unit 152 for detecting each interference level of a plurality of sub-carriers in the transmission band, on the basis of levels of the extracted signals; a soft determination unit 112 for performing soft determination on a demodulation signal in a received data part, by using reliability of the plurality of sub-carriers calculated on the basis of the detected interference levels; and an error correction unit 113 for restoring data by performing error correction on the basis of a result of the soft determination by the soft determination unit 112. |
