Signal processing system
    5.
    发明授权
    Signal processing system 失效
    信号处理系统

    公开(公告)号:US5793818A

    公开(公告)日:1998-08-11

    申请号:US471874

    申请日:1995-06-07

    摘要: A CMOS integrated signal processing system for a sampling receiver includes a timing recovery circuit, wherein an on-chip numerically controlled oscillator is operative at periods T that are initially equal to the nominal baud rate of the signals controls a sinc interpolator receiving samples at the sampling rate. A loop filter is coupled to the sinc interpolator and to the numerically controlled oscillator. The arrangement is capable of handling various symbol rates. The system includes a circuit for carrier recovery, having a second on-chip numerically controlled oscillator, a digital derotation circuit responsive to the second numerically controlled oscillator, accepting an in phase component and a quadrature component of the sampled signals. An adaptive phase error estimation circuit is coupled in a feedback loop.

    摘要翻译: 用于采样接收机的CMOS集成信号处理系统包括定时恢复电路,其中片上数控振荡器在周期T处工作,周期T最初等于信号的标称波特率,控制在采样时接收采样的正弦内插器 率。 环路滤波器耦合到正弦内插器和数控振荡器。 该装置能够处理各种符号率。 该系统包括用于载波恢复的电路,具有第二片上数控振荡器,响应于第二数控振荡器的数字解旋转电路,接受采样信号的同相分量和正交分量。 自适应相位误差估计电路耦合在反馈回路中。

    Signal processing system
    7.
    发明授权
    Signal processing system 失效
    信号处理系统

    公开(公告)号:US5724396A

    公开(公告)日:1998-03-03

    申请号:US480976

    申请日:1995-06-07

    摘要: A CMOS integrated signal processing system for a sampling receiver includes a timing recovery circuit, wherein an on-chip numerically controlled oscillator is operative at periods T that are initially equal to the nominal baud rate of the signals controls a sinc interpolator receiving samples at the sampling rate. A loop filter is coupled to the sinc interpolator and to the numerically controlled oscillator. The arrangement is capable of handling various symbol rates. The system includes a circuit for carrier recovery having a second on-chip numerically controlled oscillator, a digital derotation circuit responsive to the second numerically controlled oscillator, accepting an in phase component and a quadrature component of the sampled signals. An adaptive phase error estimation circuit is coupled in a feedback loop.

    摘要翻译: 用于采样接收机的CMOS集成信号处理系统包括定时恢复电路,其中片上数控振荡器在周期T处工作,周期T最初等于信号的标称波特率,控制在采样时接收采样的正弦内插器 率。 环路滤波器耦合到正弦内插器和数控振荡器。 该装置能够处理各种符号率。 该系统包括用于载波恢复的电路,具有第二片上数控振荡器,响应于第二数控振荡器的数字解旋转电路,接收采样信号的同相分量和正交分量。 自适应相位误差估计电路耦合在反馈回路中。