公开(公告)号：US20120002713A1

公开(公告)日：2012-01-05

申请号：US12883842

申请日：2010-09-16

Applicant: Vivek Telang ,  Hong Chen ,  Vasudevan Parthasarathy ,  Jun Cao ,  Afshin Momtaz ,  Ali Ghiasi ,  Chung-Jue Chen

Inventor： Vivek Telang ,  Hong Chen ,  Vasudevan Parthasarathy ,  Jun Cao ,  Afshin Momtaz ,  Ali Ghiasi ,  Chung-Jue Chen

IPC: H04L27/08 ,  H04L27/06 ,  H04L27/01

CPC classification number: H04L27/0002 ,  H04B1/0007 ,  H04B1/406

Abstract: According to an example embodiment, a communications receiver may include a variable gain amplifier (VGA) configured to amplify received signals, a VGA controller configured to control the VGA, a plurality of analog to digital converter (ADC) circuits coupled to an output of the VGA, wherein the plurality of ADC circuits are operational when the communications receiver is configured to process signals of a first communications protocol, and wherein only a subset of the ADC circuits are operational when the communications receiver is configured to process signals of a second communications protocol.

Abstract translation: 根据示例性实施例，通信接收机可以包括被配置为放大接收信号的可变增益放大器（VGA），被配置为控制VGA的VGA控制器，耦合到所述接收信号的输出的多个模数转换器 VGA，其中当所述通信接收器被配置为处理第一通信协议的信号时，所述多个ADC电路是可操作的，并且其中当所述通信接收器被配置为处理第二通信协议的信号时，只有所述ADC电路的子集可操作 。

公开(公告)号：US07961823B2

公开(公告)日：2011-06-14

申请号：US10879673

申请日：2004-06-29

Applicant: Thomas Kolze ,  Bruce Currivan ,  Afshin Momtaz

Inventor： Thomas Kolze ,  Bruce Currivan ,  Afshin Momtaz

IPC: H04B1/10 ,  H04B7/04 ,  H04L1/00

CPC classification number: H04L25/03006 ,  H04L7/033

Abstract: Data error such as mean square error may be reduced in a system such as a communication receiver using a dithering algorithm that adjusts one or more parameters in the system. The dithering algorithm may be applied to more than one parameter in a nested manner. The dithering algorithm may be modified to immediately check the MSE after a parameter has been adjusted.

Abstract translation: 在诸如使用调整系统中的一个或多个参数的抖动算法的通信接收机的系统中，诸如均方误差之类的数据误差可能会降低。 抖动算法可以以嵌套方式应用于多个参数。 可以修改抖动算法，以便在调整参数后立即检查MSE。

公开(公告)号：US07961781B2

公开(公告)日：2011-06-14

申请号：US11837278

申请日：2007-08-10

Applicant: Vivek Telang ,  Vasudevan Parthasarathy ,  Sudeep Bhoja ,  Hong Chen ,  Afshin Momtaz ,  Chung-Jue Chen ,  Ali Ghiasi ,  Michael Furlong ,  Lorenzo Longo

Inventor： Vivek Telang ,  Vasudevan Parthasarathy ,  Sudeep Bhoja ,  Hong Chen ,  Afshin Momtaz ,  Chung-Jue Chen ,  Ali Ghiasi ,  Michael Furlong ,  Lorenzo Longo

IPC: H03H7/30

CPC classification number: H04L25/03063 ,  H04B10/25133 ,  H04B10/697 ,  H04L7/0087 ,  H04L7/033 ,  H04L25/0307 ,  H04L2025/03356 ,  H04L2025/0349 ,  H04L2025/03509

Abstract: Embodiments include a system for performing dispersion compensation on an electromagnetic signal received over a communication channel, the electromagnetic signal bearing information at a symbol rate. An interleaved analog to digital converter (“ADC”) block may be used, wherein the interleaved ADC block may be configured to generate a plurality of digitally sampled signals from the electromagnetic signal. An interleaved equalizer block may be configured to digitally process each of the digitally sampled signals generated by the ADC block to generate a plurality of digitally equalized signals. A multiplexer may be configured to aggregate the digitally equalized signals into a composite output signal.

Abstract translation: 实施例包括一种用于对通过通信信道接收的电磁信号进行色散补偿的系统，该电磁信号以符号速率承载信息。 可以使用交错模数转换器（“ADC”）块，其中交织的ADC块可以被配置为从电磁信号生成多个数字采样的信号。 交织的均衡器块可以被配置为数字地处理由ADC块产生的数字采样信号中的每一个以产生多个数字均衡的信号。 多路复用器可以被配置为将数字均衡的信号聚合成复合输出信号。

公开(公告)号：US07839922B2

公开(公告)日：2010-11-23

申请号：US10847829

申请日：2004-05-18

Applicant: David Kyong-Sik Chung ,  Afshin Momtaz

Inventor： David Kyong-Sik Chung ,  Afshin Momtaz

IPC: H03H7/30

CPC classification number: H04L25/03878 ,  H04L25/03146

Abstract: An equalization circuit adjusts (e.g., equalizes) an input signal according to the value of one or more adjustment signals (e.g., equalization coefficients) without a multiplication operation. For example, the circuit may add or subtract a value of a coefficient signal to the amplitude of an input signal. Here, whether the coefficient is added or subtracted may depend on the sign of a control signal.

Abstract translation: 均衡电路根据一个或多个调整信号的值（例如，均衡系数）调整（例如，均衡）输入信号而不进行乘法运算。 例如，电路可以将系数信号的值加到或减去输入信号的幅度。 这里，系数是否被相加或取决于控制信号的符号。

公开(公告)号：US07750707B2

公开(公告)日：2010-07-06

申请号：US12049677

申请日：2008-03-17

Applicant: Afshin Momtaz

Inventor： Afshin Momtaz

IPC: H03H11/16

CPC classification number: H03H11/02

Abstract: High-resolution low-interconnect phase rotator. A signal may be generated having any desired phase (as determined by the step size employed). First and second control signals select a sector (e.g., the range from 0° to 360° is divided into a number of sectors) and a particular phase within that sector. Generally, this range from 0° to 360° is uniformly divided so that each sector is the same. However, if desired, there can alternatively be differences in the sizes of each of the sectors. The use of these two sets of controls signals (one for selecting the sector and one for selecting the particular phase within the sector) allows for very few control signals. N-channel metal oxide semiconductor field-effect transistor (N-MOSFET) based switches and differential pairs of transistors or alternatively p-channel metal oxide semiconductor field-effect transistor (P-MOSFET) based switches and differential pairs of transistors can be employed.

Abstract translation: 高分辨率低互连相位旋转器。 可以产生具有任何所需相位（由所采用的步长确定）的信号。 第一和第二控制信号选择扇区（例如，0°至360°的范围被划分为多个扇区）和该扇区内的特定相位。 通常，从0°到360°的范围被均匀分割，使得每个扇区相同。 然而，如果需要，也可以在每个扇区的尺寸上有差异。 使用这两组控制信号（一个用于选择扇区，一个用于选择扇区内的特定相位）允许非常少的控制信号。 可以使用基于N沟道金属氧化物半导体场效应晶体管（N-MOSFET）的开关和差分对晶体管，或者替代地，p沟道金属氧化物半导体场效应晶体管（P-MOSFET）的开关和差分对晶体管。

公开(公告)号：US20100117876A1

公开(公告)日：2010-05-13

申请号：US12656055

申请日：2010-01-14

Applicant: Jun Cao ,  Afshin Momtaz

Inventor： Jun Cao ,  Afshin Momtaz

IPC: H03M1/06 ,  H03M1/34

CPC classification number: H03M1/1061 ,  H03M1/362

Abstract: An analog-to-digital converter (ADC) is provided. The ADC includes a reference voltage generator configured to generate reference voltages, an analog to digital converter core configured to receive an input signal and the reference voltages and to generate a digital signal representative of the input signal, the digital signal having a number of bits, and a controller configured to determine a quality of the input signal, and, based on a quality of the input signal, to control the number of bits of the digital signal and values of the reference voltages.

Abstract translation: 提供了一个模拟 - 数字转换器（ADC）。 ADC包括被配置为产生参考电压的参考电压发生器，被配置为接收输入信号和参考电压并且产生代表输入信号的数字信号的模数转换器内核，数字信号具有多个位， 以及控制器，被配置为确定输入信号的质量，并且基于输入信号的质量来控制数字信号的位数和参考电压的值。

公开(公告)号：US07702053B2

公开(公告)日：2010-04-20

申请号：US11124598

申请日：2005-05-05

Applicant: Chung-Jue Chen ,  Vasudevan Parthasarathy ,  Afshin Momtaz ,  Hong Chen

Inventor： Chung-Jue Chen ,  Vasudevan Parthasarathy ,  Afshin Momtaz ,  Hong Chen

IPC: H04B1/10

CPC classification number: H04L25/03057 ,  H04L2025/03687

Abstract: Data error such as mean square error may be reduced in a system such as a communication receiver using a dithering algorithm that adjusts one or more parameters in the system. The dithering algorithm may be applied to more than one parameter. The dithering algorithm may include a state machine to alter the rate of change dependent on the state of the dithering algorithm.

Abstract translation: 在诸如使用调整系统中的一个或多个参数的抖动算法的通信接收机的系统中，诸如均方误差之类的数据误差可能会降低。 抖动算法可以应用于多个参数。 抖动算法可以包括状态机来改变取决于抖动算法的状态的变化率。

公开(公告)号：US20100014573A1

公开(公告)日：2010-01-21

申请号：US12571994

申请日：2009-10-01

Applicant: Afshin Momtaz ,  Rajesh Satapathy ,  Chung-Jue Chen

Inventor： Afshin Momtaz ,  Rajesh Satapathy ,  Chung-Jue Chen

IPC: H04L27/01

CPC classification number: H04L25/03057 ,  H03L7/0814 ,  H04L7/0037 ,  H04L7/033 ,  H04L2025/0349 ,  H04L2025/03617 ,  H04L2025/03662 ,  H04L2025/03687 ,  H04L2025/037

Abstract: A search engine selects initial coefficients for a receive equalizer. The search engine may be incorporated into a communication receiver that includes a decision feedback equalizer and clock and data recovery circuit. Here, the search engine may initialize various adaptation loops that may control the operation of, for example, a decision feedback equalizer, a clock and data recovery circuit and a continuous time filter. The receiver may include an analog-to-digital converter that is used to generate soft decision data for some of the adaptation loops.

Abstract translation: 搜索引擎选择接收均衡器的初始系数。 搜索引擎可以并入到包括判决反馈均衡器和时钟和数据恢复电路的通信接收器中。 这里，搜索引擎可以初始化可以控制例如判决反馈均衡器，时钟和数据恢复电路以及连续时间滤波器的操作的各种适配环路。 接收机可以包括用于产生一些适配环路的软判决数据的模拟 - 数字转换器。

公开(公告)号：US20090231009A1

公开(公告)日：2009-09-17

申请号：US12049677

申请日：2008-03-17

Applicant: Afshin Momtaz

Inventor： Afshin Momtaz

IPC: H03H11/20 ,  H03H11/16

CPC classification number: H03H11/02

Abstract: High-resolution low-interconnect phase rotator. A signal may be generated having any desired phase (as determined by the step size employed). First and second control signals select a sector (e.g., the range from 0° to 360° is divided into a number of sectors) and a particular phase within that sector. Generally, this range from 0° to 360° is uniformly divided so that each sector is the same. However, if desired, there can alternatively be differences in the sizes of each of the sectors. The use of these two sets of controls signals (one for selecting the sector and one for selecting the particular phase within the sector) allows for very few control signals. N-channel metal oxide semiconductor field-effect transistor (N-MOSFET) based switches and differential pairs of transistors or alternatively p-channel metal oxide semiconductor field-effect transistor (P-MOSFET) based switches and differential pairs of transistors can be employed.

Abstract translation: 高分辨率低互连相位旋转器。 可以产生具有任何所需相位（由所采用的步长确定）的信号。 第一和第二控制信号选择扇区（例如，0°至360°的范围被划分为多个扇区）和该扇区内的特定相位。 通常，从0°到360°的范围被均匀分割，使得每个扇区相同。 然而，如果需要，也可以在每个扇区的尺寸上有差异。 使用这两组控制信号（一个用于选择扇区，一个用于选择扇区内的特定相位）允许非常少的控制信号。 可以使用基于N沟道金属氧化物半导体场效应晶体管（N-MOSFET）的开关和差分对晶体管，或者替代地，p沟道金属氧化物半导体场效应晶体管（P-MOSFET）开关和差分对晶体管。

公开(公告)号：US07525462B2

公开(公告)日：2009-04-28

申请号：US11845762

申请日：2007-08-27

Applicant: Vasudevan Parthasarthy ,  Sudeep Bhoja ,  Vivek Telang ,  Afshin Momtaz

Inventor： Vasudevan Parthasarthy ,  Sudeep Bhoja ,  Vivek Telang ,  Afshin Momtaz

IPC: H03M1/00

CPC classification number: H03M1/0836 ,  H03M1/1215 ,  H03M1/183

Abstract: Embodiments include a system for performing dispersion compensation on an electromagnetic signal received over a communication channel, the electromagnetic signal bearing information at a symbol rate. An interleaved analog to digital converter (“ADC”) block may be used, wherein the interleaved ADC block may be configured to generate a plurality of digitally sampled signals from the electromagnetic signal. An interleaved equalizer block may be configured to digitally process each of the digitally sampled signals generated by the ADC block to generate a plurality of digitally equalized signals. A multiplexer may be configured to aggregate the digitally equalized signals into a composite output signal.

Abstract translation: 实施例包括一种用于对通过通信信道接收的电磁信号进行色散补偿的系统，该电磁信号以符号速率承载信息。 可以使用交错模数转换器（“ADC”）块，其中交织的ADC块可以被配置为从电磁信号生成多个数字采样的信号。 交织的均衡器块可以被配置为数字地处理由ADC块产生的数字采样信号中的每一个以产生多个数字均衡的信号。 多路复用器可以被配置为将数字均衡的信号聚合成复合输出信号。