利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

17 条记录 (耗时 0.023 秒)

    Dual open and closed loop linear transmitter
    4.
    发明授权
    Dual open and closed loop linear transmitter 有权
    双开和闭环线性变送器

    公开(公告)号：US06606483B1

    公开(公告)日：2003-08-12

    申请号：US09686732

    申请日：2000-10-10

    申请人： Michael H. Baker ,  William J. Turney ,  Paul H. Gailus

    发明人： Michael H. Baker ,  William J. Turney ,  Paul H. Gailus

    IPC分类号： H04B104

    CPC分类号： H03G3/3047 ,  H03F1/0277 ,  H03F1/345 ,  H04B1/0475

    摘要： A linear transmitter includes an amplifier feedback loop for amplifying an input signal at a power amplifier. The feedback loop is operated in an open loop mode when the power amplifier is operating at a first operating point and is operated in a closed loop mode when the power amplifier is operating at a second operating point. The transmitter further includes an auxiliary loop coupled to the amplifier feedback loop that provides phase training for the feedback loop and power leveling when the feedback loop is operating open loop. Open loop phase training and power leveling is done during open loop transmission, without an associated training signal or training period. Stable closed loop operation can commence subsequently providing the higher power amplifier efficiency associated with the second operating point and maintaining off channel interference requirements.

    摘要翻译： 线性发射器包括用于放大功率放大器处的输入信号的放大器反馈回路。 当功率放大器在第一工作点操作时，当功率放大器在第二工作点运行时，反馈回路以开环模式工作，并且在闭环模式下工作。 发射机还包括耦合到放大器反馈回路的辅助回路，当反馈回路工作在开环状态时，该回路为反馈回路提供相位训练和功率调平。 开环相位训练和功率调平在开环传输期间完成，没有相关的训练信号或训练周期。 随后可以开始稳定的闭环操作，提供与第二工作点相关联的更高的功率放大器效率，并保持关闭信道干扰要求。

    Power amplifier load controller and method for controlling a power amplifier load
    5.
    发明授权
    Power amplifier load controller and method for controlling a power amplifier load 有权
    功率放大器负载控制器和控制功率放大器负载的方法

    公开(公告)号：US06252456B1

    公开(公告)日：2001-06-26

    申请号：US09364226

    申请日：1999-07-29

    申请人： Michael H. Baker ,  William J. Turney

    发明人： Michael H. Baker ,  William J. Turney

    IPC分类号： H03F2100

    CPC分类号： H01Q11/12

    摘要： The present invention addresses the need for an apparatus and method for controlling the load of a PA, to improve PA efficiency in linear transmitters with isolator elimination (IE) circuitry, that does not require the use of high frequency RF circuitry. The present invention provides a PA load controller (130, 131) that improves the efficiency of a PA (116) by adjusting the PA load using an AGC signal (134), a level set adjustment signal (132), and a signal strength indicator (135), these three signals are readily obtained from continuous gain and phase adjustment circuitry (e.g., 102). The load controller determines a phase of the PA load that minimizes the AGC signal and a phase of the PA load that maximizes the level set adjustment signal. From these determinations, the PA load controller determines a phase of the PA load that improves the efficiency of the PA and adjusts the PA load phase accordingly.

    摘要翻译： 本发明解决了对用于控制PA的负载的装置和方法的需求，以提高不需要使用高频RF电路的隔离器消除（IE）电路的线性发射机中的PA效率。 本发明提供一种通过使用AGC信号（134），电平设定调整信号（132）和信号强度指示器（132）来调节PA负载来提高PA（116）的效率的PA负载控制器（130,131） （135），这三个信号很容易从连续增益和相位调整电路（例如102）获得。 负载控制器确定最大化AGC信号的PA负载的相位和使电平设置调整信号最大化的PA负载的相位。 从这些确定中，PA负载控制器确定PA负载的相位，从而提高PA的效率并相应地调节PA负载相位。

    Method and apparatus for resource negotiation in a direct communication link network
    6.
    发明授权
    Method and apparatus for resource negotiation in a direct communication link network 有权
    在直接通信链路网络中进行资源协商的方法和装置

    公开(公告)号：US08634352B2

    公开(公告)日：2014-01-21

    申请号：US13324684

    申请日：2011-12-13

    申请人： Nathan J. Smith ,  Michael H. Baker ,  Jeffrey D. Bonta ,  Benedito J. Fonseca, Jr. ,  Nitin R. Mangalvedhe

    发明人： Nathan J. Smith ,  Michael H. Baker ,  Jeffrey D. Bonta ,  Benedito J. Fonseca, Jr. ,  Nitin R. Mangalvedhe

    IPC分类号： H04W72/04

    CPC分类号： H04W72/04 ,  H04W72/02 ,  H04W74/002 ,  H04W84/18

    摘要： Some embodiments are directed to a method and apparatus for performing resource negotiation in a station implementing a direct communication link with at least one other station on an Orthogonal Frequency-Division Multiple Access (OFDMA) data channel. The station scans sub-channels on the data channel for base headers included in predefined position in transmissions sent on the sub-channel. The station then decodes a base header in at least one selected sub-channel to obtain parameters of a channel reservation. The obtained parameters are stored in a channel utilization table. The station selects a resource on the data channel in at least one of time or frequency that the station has observed to be free using information from the channel utilization table. The station then begins a resource negotiation process about the selected resource.

    摘要翻译： 一些实施例涉及用于在正交频分多址（OFDMA）数据信道上与至少一个其它站实现直接通信链路的站中进行资源协商的方法和装置。 该站扫描数据信道上的子信道，用于在子信道上发送的传输中包含在预定位置的基本报头。 然后，站在至少一个选择的子信道中解码基本报头以获得信道预留的参数。 获得的参数存储在通道利用率表中。 工作站使用信道利用率表中的信息，以站内观测到的空闲时间或频率中的至少一个来选择数据信道上的资源。 该站然后开始关于所选资源的资源协商过程。

    Mitigating transmission interference between digital radio and broadband communication devices
    7.
    发明授权
    Mitigating transmission interference between digital radio and broadband communication devices 有权
    减轻数字无线电和宽带通信设备之间的传输干扰

    公开(公告)号：US08995918B2

    公开(公告)日：2015-03-31

    申请号：US13295963

    申请日：2011-11-14

    申请人： Gino A. Scribano ,  Michael H. Baker ,  Xiaowei Jin

    发明人： Gino A. Scribano ,  Michael H. Baker ,  Xiaowei Jin

    IPC分类号： H04B1/00 ,  H04B15/00 ,  H04W72/08 ,  H04W16/14

    CPC分类号： H04L5/0062 ,  H04W4/80 ,  H04W16/14 ,  H04W72/082

    摘要： A broadband device (105) can detect a proximate narrowband transmission (152) from a narrowband communication device (145). The narrowband transmission (152) can be in close enough proximity (155) to at least one bearer channel of the broadband device (105) to result in interference on the narrowband reception (152) when the broadband device (105) is transmitting and the narrowband communication device (145) is concurrently receiving. Responsive to the detecting, the broadband device (105) can gate a broadband transmission (142) to ensure the broadband transmission (142) does not interfere with the proximate narrowband reception (152). In absence of detecting the narrowband transmission (152), the broadband transmission (142) from the broadband device (105) would not be gated.

    摘要翻译： 宽带设备（105）可以检测来自窄带通信设备（145）的接近​​窄带传输（152）。 窄带传输（152）可以与宽带设备（105）的至少一个承载信道足够接近（155），以在宽带设备（105）正在传输时导致对窄带接收（152）的干扰，并且 窄带通信设备（145）同时接收。 响应于检测，宽带设备（105）可以选通宽带传输（142）以确保宽带传输（142）不干扰最近的窄带接收（152）。 在没有检测到窄带传输（152）的情况下，来自宽带设备（105）的宽带传输（142）将不会被门控。

    Method and apparatus for scheduling peer-to-peer communication links
    9.
    发明授权
    Method and apparatus for scheduling peer-to-peer communication links 有权
    调度对等通信链路的方法和装置

    公开(公告)号：US08787305B2

    公开(公告)日：2014-07-22

    申请号：US13339586

    申请日：2011-12-29

    申请人： James P. Michels ,  Michael H. Baker

    发明人： James P. Michels ,  Michael H. Baker

    IPC分类号： H04W4/00

    CPC分类号： H04W72/085 ,  H04W76/14

    摘要： An evolved Node B creates or updates peer sets from measured performance information received from one or more stations. The measured performance information includes at least one quality metric associated with a downlink signal sent from the evolved Node B to the one or more stations. The evolved Node B determines excluded timeslots and preferred timeslots based on current resource assignments in each timeslot and based on the peer sets, marks potential resources in an uplink portion of a resource allocation map, and allocates one of the potential resources for peer-to-peer communication between a transmitter station and one or more receiver stations.

    摘要翻译： 演进节点B从从一个或多个站接收到的测量性能信息创建或更新对等体集。 测量的性能信息包括与从演进节点B发送到一个或多个站的下行链路信号相关联的至少一个质量度量。 演进节点B基于每个时隙中的当前资源分配并且基于对等体集来确定排除的时隙和优选时隙，标记资源分配映射的上行链路部分中的潜在资源，并且分配用于对等 - 发射机站与一个或多个接收站之间的对等通信。

    Methods and apparatus for mitigating interference between co-located collaborating radios
    10.
    发明授权
    Methods and apparatus for mitigating interference between co-located collaborating radios 有权
    用于减轻同位置协作无线电之间干扰的方法和装置

    公开(公告)号：US08712331B2

    公开(公告)日：2014-04-29

    申请号：US13446087

    申请日：2012-04-13

    申请人： Isam R. Makhlouf ,  Michael H. Baker ,  Xiaowei Jin

    发明人： Isam R. Makhlouf ,  Michael H. Baker ,  Xiaowei Jin

    IPC分类号： H04B15/00

    CPC分类号： H04J11/0066

    摘要： A method and apparatus for mitigating out of band emissions among user equipment and base stations operating at geographically co-located and spectrally distinct wireless communication systems are provided herein. During operation, a wireless radio will determine potential interferers. Preferably, these interferers comprise user equipment and base stations operating at geographically co-located and spectrally distinct wireless communication systems. Once determined, a channel quality indicator (CQI) will be adjusted accordingly to accommodate for any potential interferer. Because the CQI will take into effect any potential interferer, transmissions to/from the wireless radio will be made more robust, decreasing channel interference.

    摘要翻译： 本文提供了一种用于减轻在地理位置和频谱不同的无线通信系统上操作的用户设备和基站之间的带外发射的方法和装置。 在操作期间，无线电将确定潜在的干扰。 优选地，这些干扰源包括在地理位置相同且频谱不同的无线通信系统上操作的用户设备和基站。 一旦确定，将相应地调整信道质量指示符（CQI）以适应任何潜在的干扰。 由于CQI将使任何潜在的干扰源生效，所以对/从无线无线电的传输将变得更加鲁棒，从而降低信道干扰。