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    • 10. 发明申请
    • SIGNAL TRANSMISSION APPARATUS AND SIGNAL TRANSMISSION METHOD
    • 信号传输装置和信号传输方法
    • US20100003933A1
    • 2010-01-07
    • US11997482
    • 2006-07-19
    • Yoichi SatoTetsuya Higuchi
    • Yoichi SatoTetsuya Higuchi
    • H04B1/04H04B1/02
    • H04L27/34H04B3/54H04B2203/5416H04B2203/5425H04B2203/5491H04B2203/5495H04L25/03828H04L27/2601
    • A signal transmission apparatus of the invention comprises: a correlator 12 for shaping a spectrum of a signal; and a precoder 12 disposed on a previous stage of the correlator and including an adder which subtracts an output signal of a feedback filter from an input signal, a modulo arithmetic unit which inputs an output signal of the adder and executes modulo arithmetic operation, and the feedback filter which inputs an output signal of the modulo arithmetic unit and is provided with a transfer function obtained by subtracting 1 from a transfer function of the correlator. The correlator may be IIR filter means having a desired notch characteristic. By disposing a correlator which can freely shape a transmission signal spectrum containing a deep notch and suppress only a specified band on a receiving side, the suppression of an external noise can also be realized.
    • 本发明的信号发送装置包括:相关器12,用于对信号的频谱进行整形; 以及预置编码器12,其配置在相关器的前一级,并且包括从输入信号中减去反馈滤波器的输出信号的加法器,输入加法器的输出信号并执行模运算的模运算单元, 反馈滤波器,其输入模运算单元的输出信号,并且具有通过从相关器的传递函数中减去1而获得的传递函数。 相关器可以是具有期望的陷波特性的IIR滤波器装置。 通过设置可以自由地形成包含深陷波的发送信号频谱并且仅抑制接收侧的指定频带的相关器,也可以实现对外部噪声的抑制。