公开(公告)号：US08588705B1

公开(公告)日：2013-11-19

申请号：US12323292

申请日：2008-11-25

申请人： Tak-Lap Tsui ,  Runsheng He ,  Ozdal Barkan ,  Dance Wu

发明人： Tak-Lap Tsui ,  Runsheng He ,  Ozdal Barkan ,  Dance Wu

IPC分类号： H04W52/24

CPC分类号： H04B3/237 ,  H04B3/493 ,  H04B5/0037 ,  H04W52/24

摘要： A system and method of determining an unbalanced current condition in Power over Ethernet applications are disclosed. In some implementations, a user or network administrator may be notified of potential impairments due to unbalanced current.

摘要翻译： 公开了一种在以太网供电中确定不平衡电流状况的系统和方法。 在一些实现中，可能会向用户或网络管理员通知由于不平衡电流引起的潜在损害。

公开(公告)号：US08532203B1

公开(公告)日：2013-09-10

申请号：US12472588

申请日：2009-05-27

申请人： Jamal Riani ,  Runsheng He

发明人： Jamal Riani ,  Runsheng He

IPC分类号： H04K1/10 ,  H04L27/28

CPC分类号： H04L25/0238 ,  H04L25/0212 ,  H04L25/0252 ,  H04L25/03057 ,  H04L25/0307

摘要： Embodiments of the present invention include communication systems and methods using channel estimation based on cumulants. In one embodiment, the present invention includes a receiver comprising a sampler coupled to a communication channel for receiving an input signal and providing samples of the input signal at a first sample rate, a channel estimation circuit coupled to receive the sampled input signal, the channel estimation circuit estimating the amplitude response of the communication channel by autocorrelating the input signal, estimating the phase response of the communication channel using a fourth order cumulant of the input signal, and generating an estimated impulse response of the communication channel using the estimated amplitude response and the estimated phase response, and a channel initialization circuit coupled to the channel estimation circuit for configuring the receiver using the estimated impulse response.

摘要翻译： 本发明的实施例包括使用基于累积量的信道估计的通信系统和方法。 在一个实施例中，本发明包括接收机，该接收机包括耦合到通信信道的采样器，用于接收输入信号并以第一采样率提供输入信号的采样，耦合以接收采样的输入信号的信道估计电路， 估计电路，通过对所述输入信号进行自相关来估计所述通信信道的振幅响应，使用所述输入信号的第四级累积量估计所述通信信道的相位响应，以及使用所述估计的振幅响应生成所述通信信道的估计的脉冲响应;以及 估计的相位响应以及耦合到信道估计电路的信道初始化电路，用于使用所估计的脉冲响应来配置接收机。

公开(公告)号：US20130023226A1

公开(公告)日：2013-01-24

申请号：US13549376

申请日：2012-07-13

申请人： Shaoan Dai ,  Runsheng He

发明人： Shaoan Dai ,  Runsheng He

IPC分类号： H04B15/00

CPC分类号： H04B1/28 ,  H04B1/0007

摘要： The present disclosure includes apparatus, systems, and techniques relating to receiver image cancellation. A described technique includes receiving a downconverted signal in a digital domain, the downconverted signal including an in-phase signal and a quadrature signal; generating a first signal of a signal channel based on the downconverted signal; generating a second signal of an image channel based on the downconverted signal; filtering the second signal using first weights to produce a pilot training signal; filtering the second signal using second weights to produce an image cancellation signal; generating an output signal by subtracting the image cancellation signal from the first signal to resolve the desired signal; updating the first weights based on the first weights, the second signal, the pilot training signal, and a pilot signal; and updating the second weights based on the second weights, the output signal, and the pilot training signal.

摘要翻译： 本公开包括与接收机图像消除有关的装置，系统和技术。 所描述的技术包括在数字域中接收下变频信号，所述下变频信号包括同相信号和正交信号; 基于下变频信号产生信号信道的第一信号; 基于下变频信号产生图像通道的第二信号; 使用第一权重对所述第二信号进行滤波以产生导频训练信号; 使用第二权重对第二信号进行滤波以产生图像消除信号; 通过从第一信号中减去图像消除信号来产生输出信号以解析所需信号; 基于第一权重，第二信号，导频训练信号和导频信号来更新第一加权; 以及基于所述第二权重，所述输出信号和所述导频训练信号来更新所述第二权重。

公开(公告)号：US08301036B2

公开(公告)日：2012-10-30

申请号：US12618735

申请日：2009-11-15

申请人： Runsheng He

发明人： Runsheng He

IPC分类号： H04B10/06

CPC分类号： H04L25/03019 ,  H04L25/03057

摘要： A decision-feedback equalizer (DFE) can be operated at higher frequencies when parallelization and pre-computation techniques are employed. Disclosed herein is a DFE design that operates at frequencies above 10 GHz, making it feasible to employ decision feedback equalization in optical transceiver modules. An adaptation technique is also disclosed to maximize communications reliability. The adaptation module can be treated as a straightforward extension of the pre-computation unit. At least some method embodiments include, in each time interval: sampling a signal that is partially compensated by a feedback signal; comparing the sampled signal to a set of thresholds to determine multiple speculative decisions; selecting and outputting one of the speculative decisions based on preceding decisions; and updating a counter if the sampled signal falls within a window proximate to a given threshold. Once a predetermined interval has elapsed, the value accumulated by the counter is used to adjust the given threshold.

摘要翻译： 当采用并行化和预计算技术时，判决反馈均衡器（DFE）可以以更高的频率运行。 这里公开的是在10GHz以上的频率工作的DFE设计，使得在光收发模块中采用判决反馈均衡是可行的。 还公开了适应技术以最大化通信可靠性。 适配模块可以被视为预计算单元的直接扩展。 至少一些方法实施例包括在每个时间间隔中：对由反馈信号部分补偿的信号进行采样; 将采样信号与一组阈值进行比较以确定多个推测性决策; 基于以前的决策选择和输出其中一个投机决策; 以及如果采样信号落在靠近给定阈值的窗口内，则更新计数器。 一旦经过预定间隔，则由计数器累积的值用于调整给定的阈值。

公开(公告)号：US08203975B1

公开(公告)日：2012-06-19

申请号：US12215967

申请日：2008-07-01

申请人： Xiaopeng Chen ,  Runsheng He

发明人： Xiaopeng Chen ,  Runsheng He

IPC分类号： H04L12/16 ,  H04B1/38 ,  H04B3/20 ,  H04B15/00

CPC分类号： H04B3/32 ,  H04B3/23

摘要： A transceiver includes an analog front end (AFE) device and first, second, third, and fourth transmitters. A digital signal processor (DSP) receives digital receive signal and digital transmit signals and generates a shared error control signal and first, second, third, and fourth individual error control signals. An echo canceller system generates an estimated echo signal. First, second, and third NEXT canceller systems generate first, second, and third estimated NEXT signals, respectively, each based on the second analog receive signal and respective ones of the analog transmit signals from the second, third, and fourth transmitters during the first mode and each based on the shared error control signal, respective ones of the second, third, and fourth individual error control signals, and the respective ones of the analog transmit signals from the second, third, and fourth transmitters during the second mode.

摘要翻译： 收发器包括模拟前端（AFE）装置和第一，第二，第三和第四发射器。 数字信号处理器（DSP）接收数字接收信号和数字发射信号，并产生共用的误差控制信号和第一，第二，第三和第四单独的误差控制信号。 回波消除器系统产生估计的回波信号。 第一，第二和第三NEXT消除器系统分别产生第一，第二和第三估计的NEXT信号，每个NEXT信号分别基于第二模拟接收信号和来自第二，第三和第四发射机的模拟发射信号在第一 模式，并且各自基于共享误差控制信号，第二，第三和第四单独误差控制信号中的相应的，以及在第二模式期间来自第二，第三和第四发射器的模拟发射信号中的相应的。

公开(公告)号：US08183846B2

公开(公告)日：2012-05-22

申请号：US12723867

申请日：2010-03-15

申请人： Runsheng He ,  Zhipei Chi

发明人： Runsheng He ,  Zhipei Chi

IPC分类号： G05F1/40

CPC分类号： H02M3/1584 ,  H02M2001/0032 ,  Y02B70/16

摘要： A control system including a DC/DC converter and a control module. The DC/DC converter includes a first inductor and a second inductor. The DC/DC converter is configured to i) receive a first DC voltage and ii) output a second DC voltage. The control module is configured to, during a first operation mode, charge the first inductor while discharging the second inductor, and, during a second operation mode, one of i) charge the first inductor while charging the second inductor and ii) discharge the first inductor while discharging the second inductor. The control module is further configured to initiate the second operation mode in response to detecting a current transient in the DC/DC converter.

摘要翻译： 一种包括DC / DC转换器和控制模块的控制系统。 DC / DC转换器包括第一电感器和第二电感器。 DC / DC转换器被配置为i）接收第一DC电压并且ii）输出第二DC电压。 控制模块被配置为在第一操作模式期间对第一电感器进行充电，同时放电第二电感器，并且在第二操作模式期间，i）对第一电感器充电，同时为第二电感器充电，以及ii） 同时放电第二电感器。 控制模块还被配置为响应于检测DC / DC转换器中的电流瞬变而启动第二操作模式。

公开(公告)号：US08175565B1

公开(公告)日：2012-05-08

申请号：US12273051

申请日：2008-11-18

申请人： Runsheng He

发明人： Runsheng He

IPC分类号： H04B1/16

CPC分类号： H04B1/302 ,  H03D7/18

摘要： An RF receiver image rejection scheme. The RF is received and mixed in two quadrature channels allowing separation of the undesired image portion within the RF signal from the desired portion. The two channels can be summed to allow the image portions to cancel out and form a signal which is predominantly based on the desired portion. Another sum of the two channels can also be made to provide a signal which is primarily based on the image portion. Since there are some components of the image portion even in the compensated desired signal, that signal indicative of the image portion is used to compensate for that undesired portion.

摘要翻译： RF接收机镜像抑制方案。 RF被接收和混合在两个正交信道中，允许将RF信号中的不需要的图像部分与期望的部分分离。 可以将两个通道相加以允许图像部分抵消并形成主要基于期望部分的信号。 还可以使两个通道的另一个总和来提供主要基于图像部分的信号。 由于即使在补偿的期望信号中也存在图像部分的一些分量，所以使用指示图像部分的信号来补偿不期望的部分。

公开(公告)号：US07999711B1

公开(公告)日：2011-08-16

申请号：US12844862

申请日：2010-07-28

申请人： Runsheng He ,  Haoli Qian

发明人： Runsheng He ,  Haoli Qian

IPC分类号： H03M3/00

CPC分类号： H03M7/3031 ,  H03M7/3026 ,  H03M7/3042

摘要： A noise-shaping module including a first addition module configured to receive a digital input signal and a filtered output signal. A truncation module is configured to remove selected bits from the digital input signal and output a truncated output signal. The truncated output signal corresponds to the digital input signal with the selected bits removed. A second addition module is configured to output a difference signal. The difference signal is based on a difference between the digital input signal and the truncated output signal. A filter module is configured to generate the filtered output signal based on the difference signal and provide the filtered output signal to the first addition module.

摘要翻译： 噪声整形模块包括被配置为接收数字输入信号和滤波后的输出信号的第一加法模块。 截断模块被配置为从数字输入信号中去除所选择的位并输出截断的输出信号。 截断的输出信号对应于数字输入信号，其中所选择的位被去除。 第二加法模块被配置为输出差分信号。 差分信号基于数字输入信号和截断输出信号之间的差异。 滤波器模块被配置为基于差分信号产生经滤波的输出信号，并将经滤波的输出信号提供给第一加法模块。

公开(公告)号：US07957491B1

公开(公告)日：2011-06-07

申请号：US12612556

申请日：2009-11-04

申请人： Runsheng He

发明人： Runsheng He

IPC分类号： H03D3/00 ,  H04L27/00 ,  H04B1/10

CPC分类号： H04L27/3863

摘要： Methods and systems for filtering include accessing first and second signals produced from an input signal and producing first and second filtered outputs, which correspond to the first and second signals, based on a filtering characteristic. The filtering characteristic can include a first filtering coefficient weighting the first and second signals. The filtering characteristic can include a second filtering coefficient weighting third and fourth signals, the third and fourth signals being produced prior to the first and second signals. The first and second filtering coefficients can include matrices which have non-symmetrical terms.

摘要翻译： 用于滤波的方法和系统包括访问从输入信号产生的第一和第二信号，并且基于滤波特性产生对应于第一和第二信号的第一和第二滤波输出。 滤波特性可以包括对第一和第二信号加权的第一滤波系数。 滤波特性可包括加权第三和第四信号的第二滤波系数，第三和第四信号在第一和第二信号之前产生。 第一和第二滤波系数可以包括具有非对称项的矩阵。

公开(公告)号：US07940849B1

公开(公告)日：2011-05-10

申请号：US11842717

申请日：2007-08-21

申请人： Jing Fang ,  Runsheng He ,  Kok-Wui Cheong

发明人： Jing Fang ,  Runsheng He ,  Kok-Wui Cheong

IPC分类号： H04L27/28

CPC分类号： H04L27/2662 ,  H04L27/2657 ,  H04L27/2675 ,  H04L27/2678

摘要： In a method for determining timing information in a receiver, a first signal is analyzed to determine a first phase difference with respect to different portions of the first signal, and a second signal is analyzed to determine a second phase difference with respect to different portions of the second signal. The second signal is a frequency domain representation of at least a portion of the first signal. An indication of a carrier frequency offset and a sampling period offset are generated based on the first phase difference and the second phase difference.

摘要翻译： 在用于确定接收机中的定时信息的方法中，分析第一信号以确定相对于第一信号的不同部分的第一相位差，并且分析第二信号以确定相对于第一信号的不同部分的第二相位差 第二个信号。 第二信号是第一信号的至少一部分的频域表示。 基于第一相位差和第二相位差产生载波频率偏移和采样周期偏移的指示。