公开(公告)号：US20240223410A1

公开(公告)日：2024-07-04

申请号：US17920923

申请日：2021-12-24

申请人： RAKUTEN MOBILE, INC.

发明人： Jin NAKAZATO ,  Saki TANAKA ,  Haruka HORIUCHI

IPC分类号： H04L25/03 ,  H04W84/04

CPC分类号： H04L25/03847 ,  H04W84/042

摘要： An Open Radio Access Network Radio Unit (O-RU) including a Radio Frequency (RF) unit and a baseband unit, wherein: the baseband unit includes two or more digital signal processing units; the two or more digital signal processing units are configured to execute digital signal processing with respectively defined higher-level units; and the baseband unit is configured so as to be able to make some of the two or more digital signal processing units execute the digital signal processing and so as to be able to switch between the digital signal processing units that are made to execute the digital signal processing.

公开(公告)号：US20230188387A1

公开(公告)日：2023-06-15

申请号：US17807200

申请日：2022-06-16

申请人： Kioxia Corporation

发明人： Tomohiko TAKEUCHI

IPC分类号： H04L25/03 ,  H04B1/18

CPC分类号： H04L25/03057 ,  H04L25/03847 ,  H04B1/18

摘要： A receiver device according to an embodiment includes a equalizer, a sampler, and a controller. The equalizer receive a first signal. The equalizer boosts the first signal to output a resultant as a second signal. The sampler samples the second signal. The sampler outputs a sampling result of the second signal as a first digital signal. The controller executes adaptive processing for adapting an amount of boost of the first signal. In the adaptive processing, the controller is configured to: adjust an amount of boost for the equalizer based on inter-symbol interference of a part in the first digital signal, the part matching a data pattern of a set pattern filter; and dynamically change a pattern filter to be set according to the amount of boost for the equalizer.

公开(公告)号：US20190132161A1

公开(公告)日：2019-05-02

申请号：US16176427

申请日：2018-10-31

申请人： ACTELIS NETWORKS (ISRAEL) LTD.

发明人： Elad DOMANOVITZ ,  Oded SINAI ,  Sarit UVAL ,  Michal WINKLER

IPC分类号： H04L25/03 ,  H04B3/50 ,  H04L12/28 ,  H04L12/24 ,  H04L12/26 ,  H03G3/30

CPC分类号： H04L25/03847 ,  H03G3/02 ,  H03G3/3036 ,  H04B3/50 ,  H04L12/2869 ,  H04L12/2878 ,  H04L41/0213 ,  H04L41/082 ,  H04L43/50

摘要： A system and method are provided herein for managing an amplifier at an intermediate location in a twisted pair line between a digital subscriber line (DSL) access multiplexer and a customer premises equipment, for high data rate broadband operation. The system may include a DSL access multiplexer, an amplifier, a local communication interface and a host computer, programmed to execute an element management system service application.

公开(公告)号：US09813190B1

公开(公告)日：2017-11-07

申请号：US15200924

申请日：2016-07-01

申请人： Intel IP Corporation

发明人： Ilan Sutskover ,  Roy Nahum ,  Yuval Dafna ,  Ran Shimon ,  Tzahi Weisman ,  Roy Amel

IPC分类号： H03H7/40 ,  H04L1/00 ,  H04L12/26 ,  H04L25/03 ,  H04L12/741 ,  H04L7/00 ,  H04L27/26

CPC分类号： H04L1/0042 ,  H03F1/3247 ,  H03F3/24 ,  H03F2201/3233 ,  H04L7/0008 ,  H04L25/03 ,  H04L25/03847 ,  H04L27/265 ,  H04L27/368 ,  H04L43/028 ,  H04L45/745

摘要： Described herein are technologies related to an implementation of a closed-loop system to measure and compensate non-linearity in a transceiver circuitry of a device.

公开(公告)号：US20170288717A1

公开(公告)日：2017-10-05

申请号：US15397012

申请日：2017-01-03

申请人： Samsung Electronics Co., Ltd.

发明人： Seon-Kyoo LEE ,  Byung-Hoon JEONG ,  Jeong-Don IHM ,  Young-Don CHOI

IPC分类号： H04B1/24 ,  H04L25/03 ,  H04L12/863

CPC分类号： H04B1/24 ,  H04L25/0292 ,  H04L25/0298 ,  H04L25/03847 ,  H04L25/03878 ,  H04L47/6235 ,  H04L49/90

摘要： A reception interface circuit includes a termination circuit, a buffer and an interface controller. The termination circuit is configured to change a termination mode in response to a termination control signal. The buffer is configured to change a reception characteristic in response to a buffer control signal. The interface controller is configured to generate the termination control signal and the buffer control signal such that the reception characteristic of the buffer is changed in association with the change in the termination mode. The reception interface circuit may support various communication standards by changing the reception characteristic of the buffer in association with the termination mode. Using the reception interface circuit, communication efficiency of transceiver systems such as a memory system and/or compatibility between a transmitter device and a receiver device may be improved.

公开(公告)号：US09742599B2

公开(公告)日：2017-08-22

申请号：US15000476

申请日：2016-01-19

申请人： Hughes Network Systems, LLC

发明人： Rohit Iyer Seshadri ,  Bassel F. Beidas

IPC分类号： H04L25/03 ,  H04L27/20

CPC分类号： H04L25/03834 ,  H04L25/03006 ,  H04L25/0314 ,  H04L25/03165 ,  H04L25/0384 ,  H04L25/03847 ,  H04L27/2017

摘要： New partial response signaling systems and methods for high spectral efficiency communications are described. In a first implementation, a communication system includes a partial response signaling transmitter and a nonlinear satellite transponder. The partial response signaling transmitter includes a partial response transmit filter configured to convert complex-valued data symbols to a transmit signal using a partial response pulse shaping function; and a modulator configured to modulate the transmit signal onto a carrier wave. The transponder receives and non-linearly amplifies the modulated transmit signal for broadcast to receivers. In a second implementation, a receiver includes circuitry for downconverting a received input signal; a partial response filter with a partial response impulse function for filtering the downconverted signal; circuitry for downsampling the partial response filtered signal; circuitry for equalizing the downsampled signal; and a linear and non-linear interference cancellation module including circuitry for removing linear and non-linear ISI in the input signal.

公开(公告)号：US09195254B2

公开(公告)日：2015-11-24

申请号：US13725961

申请日：2012-12-21

申请人： QUALCOMM Incorporated

发明人： Miao Li ,  Madjid Hafizi ,  Xiaohua Kong

IPC分类号： H03K3/00 ,  G05F3/26 ,  H04L25/03

CPC分类号： G05F3/262 ,  H04L25/03847

摘要： A distribution current is split into a first control current, a second control current, and a third control current, in an apportionment according to a distribution command. A first control voltage is generated in response to the third control current. A second control voltage is generated as indication of the first control current, and a third control voltage is generated as indication of the second control current. Optionally, de-emphasis contribution of a first driver, a second driver and a third driver to an output is controlled based, at least in part, on the first control voltage, the second control voltage and the third control voltage, respectively.

摘要翻译： 根据分配命令，分配电流被分成第一控制电流，第二控制电流和第三控制电流。 响应于第三控制电流产生第一控制电压。 产生第二控制电压作为第一控制电流的指示，并且产生第三控制电压作为第二控制电流的指示。 可选地，至少部分地基于第一控制电压，第二控制电压和第三控制电压来控制第一驱动器，第二驱动器和第三驱动器对输出的去加重贡献。

公开(公告)号：US20140269892A1

公开(公告)日：2014-09-18

申请号：US14198375

申请日：2014-03-05

申请人： FutureWei Technologies, Inc.

发明人： Zhengxiang Ma ,  Munawar Kermalli

IPC分类号： H04L25/49 ,  H04L25/03

CPC分类号： H04L25/4902 ,  H03F1/0294 ,  H03F3/195 ,  H03F3/217 ,  H03F3/24 ,  H03F2200/165 ,  H03F2200/249 ,  H03F2200/432 ,  H04L25/03847

摘要： System and method embodiments are provided for improving power efficiency in an outphasing amplifier with a non-isolating combiner. Some embodiments include a circuit comprising a signal decomposer configured to receive an input signal, a non-isolating combiner coupled to the signal decomposer and configured to provide an amplified output signal corresponding to the input signal, a first power amplifiers (PA) on a first branch between the signal decomposer and the non-isolating combiner, a second PA on a second branch between the signal decomposer and the non-isolating combiner, and a switch on the second branch between the signal decomposer and the second PA. The switch is configured to disconnect the second PA from the signal decomposer upon determining that the input signal is in a first condition, and further configured to connect the second PA to the signal decomposer upon determining otherwise.

摘要翻译： 提供了系统和方法实施例，用于提高具有非隔离组合器的外相放大器的功率效率。 一些实施例包括电路，其包括被配置为接收输入信号的信号分解器，耦合到信号分解器的非隔离组合器，并且被配置为提供对应于输入信号的放大输出信号，第一功率放大器 信号分解器和非隔离组合器之间的分支，在信号分解器和非隔离组合器之间的第二分支上的第二PA以及信号分解器和第二PA之间的第二分支上的开关。 所述开关被配置为在确定所述输入信号处于第一状态时将所述第二PA与所述信号分解器断开连接，并且还被配置为在另外确定时将所述第二PA连接到所述信号分解器。

公开(公告)号：US20130163648A1

公开(公告)日：2013-06-27

申请号：US13771017

申请日：2013-02-19

申请人： Aviat U.S., Inc.

发明人： Paul A. Kennard

IPC分类号： H04B1/38

CPC分类号： H04B1/44 ,  H04B1/38 ,  H04B3/06 ,  H04L25/03847 ,  H04L25/085 ,  H04L27/2626 ,  H04W88/085 ,  Y02D70/00

摘要： Systems and methods for transceiver communication are discussed herein. A filter module may be configured to filter each carrier signal of a multicarrier transmit signal with a different bandpass filter, each bandpass filter configured to filter a different frequency band. A carrier control module may be configured to control the plurality of bandpass filters of the filter module using a carrier selection signal to enable or disable each bandpass filter, thereby coupling carrier signals of the multicarrier transmit signal to a first set of bandpass filters and decoupling a second set of bandpass filters. Filtering the carrier signals of the multicarrier transmit signal is performed by the first set of bandpass filters while the decoupling of the second set of bandpass filters limits energy in the respective frequency band. An antenna may be configured to transmit the filtered multicarrier transmit signal.

摘要翻译： 本文讨论了收发器通信的系统和方法。 滤波器模块可以被配置为利用不同的带通滤波器来滤波多载波发射信号的每个载波信号，每个带通滤波器被配置成滤波不同的频带。 载波控制模块可以被配置为使用载波选择信号来控制滤波器模块的多个带通滤波器，以启用或禁用每个带通滤波器，从而将多载波发射信号的载波信号耦合到第一组带通滤波器， 第二组带通滤波器。 滤波多载波发射信号的载波信号由第一组带通滤波器执行，而第二组带通滤波器的去耦限制了相应频带中的能量。 天线可以被配置为发送经滤波的多载波发射信号。

公开(公告)号：US08175190B2

公开(公告)日：2012-05-08

申请号：US11493382

申请日：2006-07-26

申请人： Lawrence W. Yonge, III

发明人： Lawrence W. Yonge, III

IPC分类号： H03K9/00 ,  H04L27/00

CPC分类号： H04L12/43 ,  H04B3/54 ,  H04L5/0028 ,  H04L5/0042 ,  H04L5/0092 ,  H04L25/03847 ,  H04L27/0008 ,  H04L27/2053 ,  H04L27/2623 ,  H04L27/3411 ,  H04L27/3472

摘要： Information is modulated onto frequency components of a signal. The resulting modulated signal includes at least some redundancy in frequency enabling a portion of the information modulated onto selected frequency components to be recovered from fewer than all of the selected frequency components. Controlling the spectrum of the modulated signal includes enabling the amplitude of at least some frequency components of the modulated signal to be set below a predetermined amplitude used for modulating the information.

摘要翻译： 信息被调制到信号的频率分量上。 所得到的调制信号至少包括一些频率上的冗余，使得能够从少于全部所选频率分量中恢复调制到所选频率分量上的信息的一部分。 控制调制信号的频谱包括使得调制信号的至少一些频率分量的幅度被设置为低于用于调制信息的预定幅度。