公开(公告)号：US07750831B2

公开(公告)日：2010-07-06

申请号：US12039424

申请日：2008-02-28

申请人： Heyon Min Bae ,  Naresh Ramnath Shanbhag ,  Andrew C. Singer ,  Jonathan B. Ashbrook

发明人： Heyon Min Bae ,  Naresh Ramnath Shanbhag ,  Andrew C. Singer ,  Jonathan B. Ashbrook

IPC分类号： H03M1/00

CPC分类号： H03D13/00 ,  H03L7/091

摘要： Methods and systems are provided for an improved phase detector utilizing analog-to-digital converter (ADC) components. In an embodiment, the method includes from an ADC having a sampling clock signal that determines sampling instants, obtaining a first comparison value between an analog signal and a first threshold voltage at a first sampling instant, and obtaining a second comparison value between the analog signal and a second threshold voltage at a second sampling instant. The method further includes, from a supplemental circuit, obtaining a third comparison value between the analog signal and a third threshold voltage at a third sampling instant between the first and second sampling instants. The method further includes processing the first, second, and third comparison values to determine a phase relationship between the analog signal and the sampling clock.

摘要翻译： 为使用模数转换器（ADC）组件的改进的相位检测器提供了方法和系统。 在一个实施例中，该方法包括来自具有确定采样时刻的采样时钟信号的ADC，在第一采样时刻获得模拟信号和第一阈值电压之间的第一比较值，以及获得模拟信号之间的第二比较值 和第二采样时刻的第二阈值电压。 该方法还包括从补充电路在第一和第二采样时刻之间的第三采样时刻获得模拟信号和第三阈值电压之间的第三比较值。 该方法还包括处理第一，第二和第三比较值以确定模拟信号和采样时钟之间的相位关系。

公开(公告)号：US20090262870A1

公开(公告)日：2009-10-22

申请号：US12107581

申请日：2008-04-22

申请人： Jonathan B. Ashbrook ,  Andrew C. Singer ,  Naresh R. Shanbhag ,  Robert J. Drost

发明人： Jonathan B. Ashbrook ,  Andrew C. Singer ,  Naresh R. Shanbhag ,  Robert J. Drost

IPC分类号： H04L27/06 ,  H04B1/10

CPC分类号： H04L25/0212 ,  H04B10/2507 ,  H04B10/697 ,  H04B17/0085 ,  H04B17/3912 ,  H04B2210/252 ,  H04L25/025

摘要： A system and method is disclosed for controlling signal conditioning parameters and a sampling parameter controlling conversion of a received signal to digital sampled values prior to decoding. The sampled values are decoded according to a comparison with expected values calculated according to a model of a transmission channel. The model is also updated from time to time by comparing the expected values with actual sampled values. Variation of the expected values over time is calculated. One or more of the signal conditioning parameters and the sampling parameter are adjusted according to a numerical minimization method such that the system BER is reduced.

摘要翻译： 公开了一种用于控制信号调节参数的系统和方法，以及在解码之前控制接收信号到数字采样值的转换的采样参数。 根据与根据传输信道的模型计算的预期值的比较，对采样值进行解码。 通过将预期值与实际采样值进行比较，还会不时更新模型。 计算期望值随时间的变化。 根据数字最小化方法来调整信号调理参数和采样参数中的一个或多个，使得系统BER减小。