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    • 1. 发明公开
    • 변조된 출력 신호를 적응성 재정렬하는 장치 및 방법
    • 一种适应性调制输出信号的装置和方法
    • KR1020050083741A
    • 2005-08-26
    • KR1020057006130
    • 2003-10-08
    • 엠/에이-컴, 인크.
    • 양,에릭모이,캐롤디빈센조,크리스틴
    • H04L27/22H04L27/20
    • H04L27/20H04L27/2626H04L2027/0018H04L2027/0053H04L2027/0067
    • The invention is directed to a system for adaptively re-aligning a modulated output signal having an error component by generating a reference phase signal using a phase input signal; generating a sample phase signal from the output signal; comparing the reference and sample signals; and adaptively re-aligning any difference between the reference and sample signals to substantially reduce the error component. The invention may incorporate a sampling circuit for sampling the output signal to generate the sample signal; a digital phase locked loop for combining the phase input signal with a carrier wave to generate the reference signal and comparing them to generate a phase error signal; a reference filter for generating reference phase error information; a combining circuit for combining the phase error signal with the reference phase error information to generate a correction signal; and an adaptive gain control circuit for adaptively controlling gain in the correction signal to generate a final estimated error used to re-align the output signal with the phase input signal.
    • 本发明涉及一种用于通过使用相位输入信号产生参考相位信号来自适应地重新对准具有误差分量的调制输出信号的系统; 从所述输出信号产生采样相位信号; 比较参考和采样信号; 并自适应地重新对准参考和采样信号之间的任何差异,从而大大减少误差分量。 本发明可以包括用于对输出信号进行采样以产生采样信号的采样电路; 数字锁相环,用于将相位输入信号与载波组合以产生参考信号并将其进行比较以产生相位误差信号; 用于产生参考相位误差信息的参考滤波器; 组合电路,用于将相位误差信号与参考相位误差信息组合以产生校正信号; 以及自适应增益控制电路,用于自适应地控制校正信号中的增益,以产生用于将输出信号与相位输入信号重新对准的最终估计误差。
    • 5. 发明公开
    • 전달 함수 결정 방법, 입력 파의 전자기 처리 방법, 입력파의 전자기 처리 장치 및 신호 송신기
    • 装置调制信号的前置滤波器的制造方法和制造方法
    • KR1020050070044A
    • 2005-07-05
    • KR1020057006128
    • 2003-10-07
    • 엠/에이-컴, 인크.
    • 리유,프랭크
    • H04L27/20H04L27/36
    • H03F3/24H04L25/03343H04L27/361H04L27/368
    • The invention is directed to a system for determining a transfer function for emphasizing an electromagnetic signal prior to being processed by determining a discrete transfer function for a processing system, such as a wideband phase modulator; determining a target transfer function such that the target transfer function multiplied by the inverse of the discrete transfer function produces a discrete pre-emphasis transfer function; and transforming any unstable poles and/or zeros in the pre-emphasis transfer function to stable poles and/or zeros. The discrete transfer function may be determined, for example, by using an S-function, input and output signals, the inverse-invariant method, and/or the Steiglitz-McBride algorithm. The transformation of the unstable poles and/or zeros may be accomplished using an all pass filter. The target transfer function may be a low pass FIR filter having a gain of about unity across substantially all of the frequency range of said FIR filter.
    • 本发明涉及一种用于通过确定诸如宽带相位调制器之类的处理系统的离散传递函数来确定在处理之前强调电磁信号的传递函数的系统; 确定目标传递函数,使得与离散传递函数的逆相乘的目标传递函数产生离散预加重传递函数; 并将预加重传递函数中的任何不稳定极点和/或零点变换到稳定的极点和/或零点。 离散传递函数可以例如通过使用S函数,输入和输出信号,逆不变方法和/或Steiglitz-McBride算法来确定。 不稳定极点和/或零点的变换可以使用全通滤波器来实现。 目标传递函数可以是在所述FIR滤波器的基本上所有频率范围上具有大致一个增益的低通FIR滤波器。