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    • 7. 发明专利
    • Signal processing apparatus, program, and signal processing method
    • 信号处理装置,程序和信号处理方法
    • JP2008160386A
    • 2008-07-10
    • JP2006345844
    • 2006-12-22
    • Mega Chips Corp株式会社メガチップス
    • CHIN KANTATSU
    • H04B7/005H04J1/00H04J11/00
    • H04L27/2647H04L25/0212H04L25/03019H04L2025/03414H04L2025/03471
    • PROBLEM TO BE SOLVED: To suppress the degradation of reception quality due to multipath.
      SOLUTION: A controller 16 for controlling a filter 12 of a signal processing apparatus is provided with a detection part 163, an estimation part 164, and an updating part 165. The detection part 163 detects an amplitude and a delay of an electric wave delayed behind a main wave on the basis of a signal inputted to the detection part 163 through a FFT, a transmission line estimation part, and an IFFT 15 from the filter 12 to which an OFDM signal has been inputted, and transmits the amplitude and the delay to the estimation part 164. The estimation part 164 estimates a parameter of a transfer function of a transmission line in accordance with the amplitude transmitted from the detection part 163 and generates parameter data 167. The updating part 165 operates a filter coefficient for canceling the transfer function of the transmission line on the basis of the parameter data 167 and updates a filter coefficient of the filter 12.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:抑制由于多路径引起的接收质量的劣化。 解决方案:用于控制信号处理装置的滤波器12的控制器16设置有检测部分163,估计部分164和更新部分165.检测部分163检测电力的振幅和延迟 基于从输入了OFDM信号的滤波器12通过FFT,传输线路估计部和IFFT 15输入到检测部163的信号,在主波之后延迟,并发送振幅和 延迟到估计部分164.估计部分164根据从检测部分163发送的振幅估计传输线的传递函数的参数,并生成参数数据167.更新部分165操作用于取消的滤波器系数 基于参数数据167传输线路的传递函数,并更新滤波器12的滤波器系数。版权所有:(C)2008,JPO&INPIT