Acoustic feedback suppression for audio amplification systems
    1.
    发明申请
    Acoustic feedback suppression for audio amplification systems 审中-公开
    音频放大系统的声学反馈抑制

    公开(公告)号:US20070104335A1

    公开(公告)日:2007-05-10

    申请号:US11389138

    申请日:2006-03-27

    申请人: Yong Shi Jing Sun

    发明人: Yong Shi Jing Sun

    IPC分类号: H04B15/00 H04R27/00

    CPC分类号: H04R3/02 H04R27/00

    摘要: In a method of acoustic feedback suppression, digitized time-domain samples of acoustic signals are obtained, and discrete time-frequency transformation is performed on the digitized time-domain samples to generate a plurality of frequency bins of a frequency resolution. A howling frequency bin is identified, where the howling frequency has the maximum magnitude among the plurality of frequency bins. A peak frequency within the howling frequency bin is detected, and this peak frequency is suppressed.

    摘要翻译: 在声反馈抑制的方法中,获得声信号的数字化时域样本,并且对数字化的时域样本执行离散时间 - 频率变换,以产生频率分辨率的多个频率仓。 识别啸叫频率仓,其中嚎叫频率在多个频率仓中具有最大幅度。 检测啸叫频率仓内的峰值频率,抑制该峰值频率。

    BASE STATIONS AND METHODS FOR FACILITATING DYNAMIC SIMULCASTING AND DE-SIMULCASTING IN A DISTRIBUTED ANTENNA SYSTEM
    4.
    发明申请
    BASE STATIONS AND METHODS FOR FACILITATING DYNAMIC SIMULCASTING AND DE-SIMULCASTING IN A DISTRIBUTED ANTENNA SYSTEM 有权
    用于促进分布式天线系统中动态SIMULCATTING和DE-SIMULCASTING的基站和方法

    公开(公告)号:US20130095871A1

    公开(公告)日:2013-04-18

    申请号:US13461299

    申请日:2012-05-01

    IPC分类号: H04W28/00

    摘要: Base stations may include a plurality of antenna ports adapted to communicatively couple to respective remote antenna units. A base station simulcast controller module may be coupled with each antenna port, and may be adapted to transmit downlink transmissions over a plurality of remote antenna units, with two or more of the remote antenna units simulcasting downlink transmissions as a simulcasting group. In response to one or more obtained network traffic parameters, the base station simulcast controller module may modify the simulcasting group to include at least one different remote antenna unit. Methods operational on base station may include transmitting downlink transmissions over a plurality of remote antenna units, where two or more of the remote antenna units form a simulcasting group. The simulcasting group can be modified to include at least one different remote antenna unit in response to one or more obtained network traffic parameters.

    摘要翻译: 基站可以包括适于通信地耦合到相应的远程天线单元的多个天线端口。 基站联播控制器模块可以与每个天线端口耦合,并且可以适于在多个远程天线单元上传输下行链路传输,其中两个或多个远程天线单元将下行链路传输同时广播为联播组。 响应于一个或多个获得的网络业务参数,基站联播控制器模块可以修改联播组以包括至少一个不同的远程天线单元。 在基站上操作的方法可以包括在多个远程天线单元中发送下行链路传输,其中两个或更多个远程天线单元形成同时播送组。 响应于一个或多个获得的网络流量参数,可以修改联播组以包括至少一个不同的远程天线单元。

    Multi-Mode High Efficiency Linear Power Amplifier
    6.
    发明申请
    Multi-Mode High Efficiency Linear Power Amplifier 有权
    多模高效线性功率放大器

    公开(公告)号:US20110095828A1

    公开(公告)日:2011-04-28

    申请号:US12985373

    申请日:2011-01-06

    IPC分类号: H03F3/68

    摘要: A power amplifier includes a plurality of amplification paths in which at least one amplification path is selectively enabled and disabled, wherein each amplification path includes an output impedance modification element and an output phase shift element that is operable independently from the output impedance modification element, and wherein the output impedance modification element in each amplification path provides selective impedance for each amplification path.

    摘要翻译: 功率放大器包括多个放大路径,其中至少一个放大路径被选择性地启用和禁用,其中每个放大路径包括输出阻抗修改元件和可独立于输出阻抗修改元件操作的输出相移元件,以及 其中每个放大路径中的输出阻抗修改元件为每个放大路径提供选择性阻抗。

    Systems and methods for regulation of engine variables
    7.
    发明授权
    Systems and methods for regulation of engine variables 失效
    用于调节发动机变量的系统和方法

    公开(公告)号:US07660660B2

    公开(公告)日:2010-02-09

    申请号:US11673450

    申请日:2007-02-09

    IPC分类号: F01P7/14 F01P3/00

    CPC分类号: F01P7/167 F01P2037/00

    摘要: A method for controlling an engine output with at least two actuators, including applying inputs to actuators which regulate a variable of an engine, evaluating the response of the system, determining the ability of the actuators to change the engine variable, determining the capability of the actuators to reject a disturbance, calculating an optimum actuator feedforward control function based upon the ability and capability determined and controlling the actuators using the calculated function and a feedforward control algorithm.

    摘要翻译: 一种用于利用至少两个致动器控制发动机输出的方法,包括向调节发动机变量的致动器施加输入,评估系统的响应,确定致动器改变发动机变量的能力,确定 执行器以排除干扰,基于使用所计算的功能和前馈控制算法确定并控制致动器的能力和能力来计算最佳致动器前馈控制功能。

    JAMMING GRAPH AND ITS APPLICATION IN NETWORK RESOURCE ASSIGNMENT
    8.
    发明申请
    JAMMING GRAPH AND ITS APPLICATION IN NETWORK RESOURCE ASSIGNMENT 失效
    JAMMING GRAPH及其在网络资源分配中的应用

    公开(公告)号:US20090310554A1

    公开(公告)日:2009-12-17

    申请号:US12482885

    申请日:2009-06-11

    IPC分类号: H04W72/04

    摘要: A wireless communication network uses backhaul negotiation based upon static and dynamic resource assignment on jamming graphs. Static reuse factor design methods including fractional frequency reuse (FFR) are addressed. The jamming graph is used to summarize the interfering relationship between transmitters (nodes in the jamming graph). Negotiation-based algorithm is used to arrive at a static resource assignment so that a large reuse factor can be achieved while jamming scenario can be avoided. As a result of such algorithm, each transmitter is assigned some resources, over which traffic transmission can be done instantaneously to reduce the packet delay for short packets. Based on the result of static resource negotiation algorithm, a dynamic resource algorithm can be run, such that the resources assigned to different nodes can be share in a bursty traffic scenario to further reduce packet delay for larger packet size cases, while jamming be also avoided.

    摘要翻译: 无线通信网络使用基于干扰图上的静态和动态资源分配的回程协商。 包括分数频率复用(FFR)在内的静态重用因子设计方法得到了解决。 干扰图用于总结发射机(干扰图中的节点)之间的干扰关系。 使用基于谈判的算法来获得静态资源分配,从而可以避免干扰情况下实现大的重用因子。 作为这种算法的结果,每个发射机被分配一些资源,可以通过该资源瞬时完成业务传输以减少短分组的分组延迟。 基于静态资源协商算法的结果,可以运行动态资源算法,使得分配给不同节点的资源可以在突发流量场景中共享,以进一步减小较大分组大小情况下的分组延迟,同时也避免干扰 。

    Current-controlled oscillator
    9.
    发明授权
    Current-controlled oscillator 有权
    电流控制振荡器

    公开(公告)号:US07295079B2

    公开(公告)日:2007-11-13

    申请号:US10537029

    申请日:2002-11-29

    申请人: Hai Jie Wu Jing Sun

    发明人: Hai Jie Wu Jing Sun

    IPC分类号: H03K3/03 H03L1/00

    CPC分类号: H03K3/011 H03B5/20 H03K3/0322

    摘要: The present invention provides a current controlled oscillator comprising a first section providing a first differential output and a second section providing a second differential output. A loading structure comprised of resistive and reactive elements electrically connects the first differential output with the second differential output. The resistive and reactive elements have values chosen such that the resistive elements substantially extend the linear operating frequency range of the current controlled oscillator. Transistors of the loading structure have which are tied to a power supply rejection ratio compensation section for compensating for variations in power supply voltage.

    摘要翻译: 本发明提供了一种电流控制振荡器,包括提供第一差分输出的第一部分和提供第二差分输出的第二部分。 由电阻和无功元件组成的负载结构将第一差分输出和第二差分输出电连接。 电阻和无功元件具有选择的值,使得电阻元件基本上延伸了当前受控振荡器的线性工作频率范围。 负载结构的晶体管连接到电源抑制比补偿部分,用于补偿电源电压的变化。

    Method for Increasing the Reliability of Position Information When Transitioning from a Regional, Wide-Area, or Global Carrier-Phase Differential Navigation (WADGPS) to a Local Real-Time Kinematic (RTK) Navigation System
    10.
    发明申请
    Method for Increasing the Reliability of Position Information When Transitioning from a Regional, Wide-Area, or Global Carrier-Phase Differential Navigation (WADGPS) to a Local Real-Time Kinematic (RTK) Navigation System 有权
    从区域,广域或全球载波相位差分导航(WADGPS)转换到本地实时运动(RTK)导航系统时提高位置信息可靠性的方法

    公开(公告)号:US20070085737A1

    公开(公告)日:2007-04-19

    申请号:US11457745

    申请日:2006-07-14

    IPC分类号: G01S5/14

    CPC分类号: G01S19/48 G01S19/43 G01S19/44

    摘要: The present invention includes a method for a combined use of a local positioning system, a local RTK system and a regional, wide-area, or global differential carrier-phase positioning system (WADGPS) in which disadvantages associated with the local positioning system, the RTK and the WADGPS navigation techniques when used separately are avoided. The method includes determining a first position of the object based on information from the WADGPS, and determining a second position of the object based on position information from a local positioning/RTK positioning system. Thereafter, position determined by the WADGPS and the position determined by the local positioning/RTK positioning system are compared. The WADGPS position is used for navigating the object when the WADGPS position and local positioning/position differ by more than a predefined threshold, and using the local positioning/RTK position for navigating the object when the WADGPS position and local positioning/RTK position differ by less than the predefined threshold.

    摘要翻译: 本发明包括一种组合使用本地定位系统,本地RTK系统和区域广域或全球差分载波相位定位系统(WADGPS)的方法,其中与本地定位系统相关的缺点 避免使用RTK和WADGPS导航技术。 该方法包括基于来自WADGPS的信息来确定对象的第一位置,并且基于来自本地定位/ RTK定位系统的位置信息确定对象的第二位置。 此后,比较由WADGPS确定的位置和由本地定位/ RTK定位系统确定的位置。 当WADGPS位置和本地定位/位置相差超过预定义阈值时,WADGPS位置用于导航对象,并且当WADGPS位置和本地定位/ RTK位置相差不同时使用本地定位/ RTK位置来导航对象 小于预定阈值。