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    • 8. 发明专利
    • Reception device and frequency selectivity interference correction method
    • 接收设备和频率选择性干扰校正方法
    • JP2014127823A
    • 2014-07-07
    • JP2012282724
    • 2012-12-26
    • Panasonic Corpパナソニック株式会社
    • SOGA SHIGERUHASEGAWA TERUAKIJINNO IPPEIMATSUMURA YOSHINAGAKOBATAKE HISATERUWATANABE KOUYA
    • H04J11/00H03M13/45
    • H04L25/03821H03M13/00H03M13/45H03M13/6527H04L1/0047H04L5/0007H04L5/0048H04L25/067H04L27/2613H04L27/2647
    • 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.
    • 要解决的问题:减少由相邻信道的泄漏功率引起的频率选择性干扰的影响引起的接收性能的劣化。解决方案:OFDM接收装置100接收包括具有多个导频子载波的STF的信号,以及 在传输频带中以预定频率间隔交替分配的多个空子载波和与STF时间复用的数据部分。 OFDM接收装置100包括:零载波提取单元151,用于从接收信号中提取具有多个零子载波频率的信号; 功率计算单元152,用于基于所提取的信号的电平来检测传输频带中的多个子载波的每个干扰电平; 软确定单元112,用于通过使用基于检测到的干扰电平计算出的多个副载波的可靠性来对接收到的数据部分中的解调信号进行软判定; 以及用于通过基于软判定单元112的软判定结果执行纠错来恢复数据的纠错单元113。