Systems and methods for automatic gain control
    1.
    发明授权
    Systems and methods for automatic gain control 有权
    用于自动增益控制的系统和方法

    公开(公告)号:US07408493B2

    公开(公告)日:2008-08-05

    申请号:US11134194

    申请日:2005-05-20

    IPC分类号: H03M1/12

    CPC分类号: H03M1/185

    摘要: Systems and methods for automatic gain control are disclosed. In one aspect of the invention, a system is provided that comprises a programmable gain amplifier that amplifies an input signal based on a gain signal. The system further comprises an analog-to-digital converter that generates at least one digital output signal from the amplified input signal, and an automatic gain control component that determines an adjustment of the gain signal based on a comparison of the at least one digital output signal to a predetermined maximum amplitude reference level.

    摘要翻译: 公开了用于自动增益控制的系统和方法。 在本发明的一个方面,提供了一种系统,其包括可编程增益放大器,其基于增益信号放大输入信号。 该系统还包括一个模拟 - 数字转换器,其从放大的输入信号产生至少一个数字输出信号,以及一个自动增益控制部件,其基于至少一个数字输出的比较来确定增益信号的调整 信号到预定的最大幅度参考电平。

    SYSTEMS AND METHODS FOR AUTOMATIC GAIN CONTROL
    2.
    发明申请
    SYSTEMS AND METHODS FOR AUTOMATIC GAIN CONTROL 有权
    用于自动增益控制的系统和方法

    公开(公告)号:US20060261992A1

    公开(公告)日:2006-11-23

    申请号:US11134194

    申请日:2005-05-20

    IPC分类号: H03M1/12

    CPC分类号: H03M1/185

    摘要: Systems and methods for automatic gain control are disclosed. In one aspect of the invention, a system is provided that comprises a programmable gain amplifier that amplifies an input signal based on a gain signal. The system further comprises an analog-to-digital converter that generates at least one digital output signal from the amplified input signal, and an automatic gain control component that determines an adjustment of the gain signal based on a comparison of the at least one digital output signal to a predetermined maximum amplitude reference level.

    摘要翻译: 公开了用于自动增益控制的系统和方法。 在本发明的一个方面,提供了一种系统,其包括可编程增益放大器,其基于增益信号放大输入信号。 该系统还包括一个模拟 - 数字转换器,其从放大的输入信号产生至少一个数字输出信号,以及一个自动增益控制部件,其基于至少一个数字输出的比较来确定增益信号的调整 信号到预定的最大幅度参考电平。

    Constellation selection in a communication system
    4.
    发明授权
    Constellation selection in a communication system 有权
    通讯系统中的星座选择

    公开(公告)号:US07274735B2

    公开(公告)日:2007-09-25

    申请号:US10273558

    申请日:2002-10-18

    IPC分类号: H04B3/46

    摘要: A method is provided to provide data to automatically estimate channel performance in a communication system if a different order constellation is used comprising the steps of: receiving an input signal from the channel; passing the input signal to a slicer having an output signal; determining signal noise by taking the difference between the input signal and output signal; identifying a beginning of a noise event when the signal noise is greater than a predefined first threshold; identifying an end of a noise event when the signal noise is less than a predefined second threshold; and providing for output the beginning of the noise event and the end of the noise event. Other systems and methods are disclosed.

    摘要翻译: 提供一种提供数据以自动估计通信系统中的信道性能的方法,如果使用不同的订单星座包括以下步骤:从信道接收输入信号; 将输入信号传递到具有输出信号的限幅器; 通过取输入信号和输出信号之差来确定信号噪声; 当信号噪声大于预定义的第一阈值时,识别噪声事件的开始; 当信号噪声小于预定义的第二阈值时,识别噪声事件的结束; 并提供输出噪声事件的开始和噪声事件的结束。 公开了其它系统和方法。

    Method for upstream CATV coded modulation
    6.
    发明授权
    Method for upstream CATV coded modulation 有权
    上游CATV编码调制方法

    公开(公告)号:US07545890B1

    公开(公告)日:2009-06-09

    申请号:US09493526

    申请日:2000-01-28

    IPC分类号: H04L27/06

    摘要: The present invention provides an encoding method and a class of decoding methods that provide methods for high throughput and high robustness digital communications over channels that are contaminated by impulse noise, as well as white and colored additive noise (noise that is characterized by heavy-tailed distribution), phase noise and signal fading.

    摘要翻译: 本发明提供了一种编码方法和一类解码方法,其提供了在被脉冲噪声污染的信道上的高吞吐量和高鲁棒性数字通信的方法,以及白色和彩色加性噪声(以粗尾为特征的噪声 分布),相位噪声和信号衰落。