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    Systems and methods for multi-beam antenna architectures for adaptive nulling of interference signals
    25.
    发明授权
    Systems and methods for multi-beam antenna architectures for adaptive nulling of interference signals 有权

    公开(公告)号：US09640866B2

    公开(公告)日：2017-05-02

    申请号：US13761455

    申请日：2013-02-07

    申请人： Rajendra Kumar

    发明人： Rajendra Kumar

    IPC分类号： H01Q3/26 ,  H04B7/08

    CPC分类号： H01Q3/2617 ,  H04B7/0842 ,  H04B7/086 ,  H04B7/088

    摘要： Various embodiments described herein are directed to methods and systems for multibeam adaptive antenna architectures for recovering user signals in the coverage area of the antenna in the presence of interference sources. For example, various embodiments may utilize an architecture comprised of an array of antenna feeds, an RF to baseband conversion subsystem, a bank of digital beamformers, a channelization subsystem, a bank of weighted combiners, and a bank of demodulators for the demodulation and detection of user signals. The multiple beamformers introduce nulls in the direction of interference sources based on distinct adaptive algorithms for providing different antenna beam patterns after adaptation. Various other embodiments may utilize architecture for providing the directions of the interference sources or intentional jammers.

    Portable data entry device with a detachable host PDA
    26.
    再颁专利
    Portable data entry device with a detachable host PDA 有权
    具有可拆卸主机PDA的便携式数据录入设备

    公开(公告)号：USRE45181E1

    公开(公告)日：2014-10-07

    申请号：US13855227

    申请日：2013-04-02

    申请人： Rajendra Kumar

    发明人： Rajendra Kumar

    IPC分类号： H04B1/38 ,  H04M1/00

    CPC分类号： G06F3/0202 ,  G06F1/1626 ,  G06F1/1632

    摘要： An apparatus and method are disclosed that can adapt off-the shelf PDA devices (90) to user input/output applications such as data entry applications and cellular phone applications. The resulting apparatus (10) may be sized and shaped to be durable and facilitate handheld operation when the user is mobile during use. The apparatus provides features required for portable data entry such as key entry, barcode scanning, radio frequency identification, and wireless local area network (LAN) as well as wide area network (WAN) communications. The apparatus may be operated (a) in a slave mode with inclusion of a PDA device (90) for use in certain input/output operations that are processor intensive as well as (b) in a stand-alone mode without inclusion of a PDA device (90) for use in certain other input/output operations that are not processor intensive.

    摘要翻译： 公开了一种可以将现成的PDA设备（90）适应于诸如数据录入应用和蜂窝电话应用之类的用户输入/输出应用的装置和方法。 所得到的装置（10）的尺寸和形状可以是耐用的，并且当用户在使用期间是移动的时便于手持操作。 该设备提供便携式数据输入所需的功能，例如键入，条形码扫描，射频识别和无线局域网（LAN）以及广域网（WAN）通信。 该装置可以以从属模式操作（a），包括用于在处理器密集的某些输入/输出操作中使用的PDA设备（90），以及（b）以独立模式而不包括PDA 设备（90），用于不是处理器密集型的某些其他输入/输出操作。

    Grid computing system with virtual printer
    27.
    发明授权
    Grid computing system with virtual printer 有权
    带虚拟打印机的网格计算系统

    公开(公告)号：US08743387B2

    公开(公告)日：2014-06-03

    申请号：US11008718

    申请日：2004-12-09

    申请人： Rajendra Kumar

    发明人： Rajendra Kumar

    IPC分类号： G06F3/12 ,  G06K15/00

    CPC分类号： G06F3/121 ,  G06F3/1218 ,  G06F3/1222 ,  G06F3/1234 ,  G06F3/1238 ,  G06F3/1267 ,  G06F3/1285

    摘要： A grid computing system is disclosed. The grid computing system includes one or more printer nodes representing distributed print resources, an information repository, and a grid distributed resource manager. Continuing, the information repository includes printer attributes associated with the printer nodes. Further, the grid distributed resource manager provides a virtual printer to a user based on the distributed print resources. Also, the grid distributed resource manager accepts and assigns print jobs submitted to the virtual printer by the user.

    摘要翻译： 公开了一种网格计算系统。 网格计算系统包括表示分布式打印资源的一个或多个打印机节点，信息库和网格分布式资源管理器。 继续，信息存储库包括与打印机节点相关联的打印机属性。 此外，网格分布式资源管理器基于分布式打印资源向用户提供虚拟打印机。 此外，网格分布式资源管理器接受并分配由用户提交给虚拟打印机的打印作业。

    Adaptive receiver for high-order modulated signals over fading channels
    30.
    发明授权
    Adaptive receiver for high-order modulated signals over fading channels 有权
    用于衰落信道上的高阶调制信号的自适应接收机

    公开(公告)号：US08233568B2

    公开(公告)日：2012-07-31

    申请号：US12205448

    申请日：2008-09-05

    申请人： Rajendra Kumar ,  Ramses Diaz de Leon

    发明人： Rajendra Kumar ,  Ramses Diaz de Leon

    IPC分类号： H04L27/00

    CPC分类号： H04L27/38 ,  H04L27/0014 ,  H04L2027/0026 ,  H04L2027/0055 ,  H04L2027/0067 ,  H04L2027/0069 ,  H04L2027/0087

    摘要： An adaptive receiver to provide reliable estimates of the symbols for the high-order MQAM and MPSK modulated signals received in the presence of amplitude fading and phase dynamics induced due to time-varying atmospheric or terrestrial multipath fading encountered in wireless communication channels. The adaptive receiver encompasses an adaptive tracking loop comprised of adaptive channel fade envelope estimator derived from the high-order modulated signal, a novel phase detector to separately estimate the phase due to the fading channel and the reference oscillator from that due to the data modulation present in the received signal without the need of any pilot symbol or pilot carrier, and a Kalman filter, a fixed-lag smoother and a smoothed symbol detector.

    摘要翻译： 一种自适应接收机，用于在存在由无线通信信道中遇到的随时间变化的大气或地面多径衰落引起的幅度衰落和相位动态的情况下提供用于高阶MQAM和MPSK调制信号的符号的可靠估计。 自适应接收机包括自适应跟踪环路，该自适应跟踪环路包括从高阶调制信号导出的自适应信道衰落包络估计器，一种新颖的相位检测器，用于分别估计由于衰落信道和参考振荡器引起的相位， 在接收信号中，不需要任何导频符号或导频载波，卡尔曼滤波器，固定延迟平滑器和平滑符号检测器。