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。

公开(公告)号：US20110234314A1

公开(公告)日：2011-09-29

申请号：US12798026

申请日：2010-03-26

申请人： Rajendra Kumar

发明人： Rajendra Kumar

IPC分类号： H03F1/26

CPC分类号： H03F1/3258 ,  H03F1/3282 ,  H03F1/3288 ,  H03F1/3294

摘要： A method for pre-processing a signal prior to receipt of the signal by a non-linear device (NLD) to compensate for AM-AM distortion and AM-PM distortion of the signal by the NLD. The method includes generating a modified amplitude rk based on an amplitude xk derived from a digitized envelope Ri,k of the signal, generating a scale factor ck based on the modified amplitude rk and the amplitude xk, generating an AM-AM compensated signal based on the scale factor ck, generating a first AM-PM phase compensation value based on the modified amplitude rk, and generating an AM-AM and AM-PM compensated signal by modifying a phase of the AM-AM compensated signal based on the first AM-PM phase compensation value.

摘要翻译： 一种用于在由非线性设备（NLD）接收信号之前预处理信号以补偿NLD的信号的AM-AM失真和AM-PM失真的方法。 该方法包括基于从信号的数字化包络R i，k导出的振幅x k生成修正振幅r k，基于修正振幅rk和振幅xk产生比例因子ck，基于 比例因子ck，基于修正振幅rk产生第一AM-PM相位补偿值，并且通过基于第一AM-AM补偿信号修改AM-AM补偿信号的相位来产生AM-AM和AM-PM补偿信号， PM相位补偿值。

公开(公告)号：US20110216852A1

公开(公告)日：2011-09-08

申请号：US12660615

申请日：2010-03-02

申请人： Rajendra Kumar

发明人： Rajendra Kumar

IPC分类号： H04L27/20 ,  G06F7/00 ,  H04L27/00

CPC分类号： G06F7/00 ,  H04L27/00 ,  H04L27/20

摘要： Various embodiments are directed to systems and methods for combining a plurality of codes. The plurality of codes may be binary codes having possible logical values of −1 and +1 and may comprise an even number of codes. An output of the combining v0,k may be given by: v0=sgn(vi), where vi is the sum of the first plurality of codes at the first time. Embodiments for allocating different power levels among various codes are presented.

摘要翻译： 各种实施例涉及用于组合多个代码的系统和方法。 多个代码可以是具有可能的逻辑值为-1和+1的二进制代码，并且可以包括偶数个代码。 组合v0，k的输出可以由下式给出：v0 = sgn（vi），其中vi是第一时间的第一个多个代码的和。 呈现了各种代码中分配不同功率电平的实施例。

公开(公告)号：US07793170B2

公开(公告)日：2010-09-07

申请号：US11028900

申请日：2005-01-03

申请人： Roshan Rajendra Baliga ,  Rahul Garg ,  Rajendra Kumar ,  Sreenath Ramanath

发明人： Roshan Rajendra Baliga ,  Rahul Garg ,  Rajendra Kumar ,  Sreenath Ramanath

IPC分类号： G11C29/00

CPC分类号： H04L27/265 ,  H03M13/2792 ,  H04L1/0071 ,  H04L27/263

摘要： A novel technique for combining deinterleaving operation with Fast Fourier Transformer (FFT) modules and other post FFT modules in a receiver to reduce processing time. In one example embodiment, the deinterleaving operation, in the post FFT module, is combined with FFT and demapper operations to reduce the processing time and complexity.

摘要翻译： 一种用于将解交织操作与快速傅里叶变换器（FFT）模块和其他后FFT模块组合在接收器中以减少处理时间的新颖技术。 在一个示例实施例中，后FFT模块中的去交织操作与FFT和解映射器操作组合以减少处理时间和复杂性。

公开(公告)号：US20080304688A1

公开(公告)日：2008-12-11

申请号：US12134517

申请日：2008-06-06

申请人： Rajendra Kumar

发明人： Rajendra Kumar

IPC分类号： H04R1/10 ,  G06F13/00

CPC分类号： H04M1/72527 ,  B60R11/0252 ,  B60R2011/0029 ,  B60R2011/0052 ,  B60R2011/0071 ,  B60R2011/0075 ,  G06F1/1616 ,  G06F1/1626 ,  G06F1/1632 ,  G06F1/1656 ,  H04M1/0256 ,  H04M1/0258 ,  H04M1/6066

摘要： A display unit having at least one docking port for receiving and retaining a complementary hands-free headset therein. The docking port comprises a recessed slot formed in the display unit housing. The headset preferably is frictionally retained within the docking port. The docking port is provided with a power jack connector that matingly engages a complementary power jack on the headset when docked, thereby recharging the rechargeable power supply in the headset.

摘要翻译： 具有至少一个对接端口的显示单元，用于在其中接收和保持互补的免提耳机。 对接端口包括形成在显示单元壳体中的凹槽。 耳机优选地被摩擦地保持在对接端口内。 对接端口设置有电源插座连接器，其在对接时配合地接合耳机上的互补电源插孔，从而为耳机中的可再充电电源充电。

公开(公告)号：US07373168B1

公开(公告)日：2008-05-13

申请号：US11034170

申请日：2005-01-12

申请人： Rajendra Kumar

发明人： Rajendra Kumar

IPC分类号： H04B7/00

CPC分类号： H04W52/146 ,  H04W52/24

摘要： A power controller in a communication system adjusts the transmitted power level using adaptive prediction of channel fading for maintaining the power level for improved communications by using an adaptive nonlinear predictor that explicitly takes into account the propagation delay and channel fading where the transmitted power is determined on the basis of the measurement of the received power levels over the individual diversity branches for providing communication through a fading channel with effective performance equivalent to that of a channel without any signal fading.

摘要翻译： 通信系统中的功率控制器使用信道衰落的自适应预测来调整发射功率电平，以通过使用自适应非线性预测器来维持功率电平以改善通信，所述自适应非线性预测器显式地考虑传输延迟和信道衰落，其中确定发射功率 测量各个分集支路上的接收功率电平的基础，用于通过衰落信道提供与没有任何信号衰落的信道相当的有效性能的通信。

公开(公告)号：US07149543B2

公开(公告)日：2006-12-12

申请号：US11242495

申请日：2005-10-03

申请人： Rajendra Kumar

发明人： Rajendra Kumar

IPC分类号： H04M1/00 ,  H04B1/38 ,  G05B11/01 ,  G05B15/00

CPC分类号： H04M1/0258 ,  G06F1/1626 ,  G06F1/1686 ,  H04M1/72522

摘要： A handheld computing device (10) having voice input and voice output includes a handheld unit (20) having a processor (11) and a display (18) communicating with the processor (11), a communication device (30) including means for voice input (43) and means for voice output (42), a mechanism (39, 41) for docking the communication device (30) with the handheld unit (20) forming a docked unit, the docked unit dimensioned to be held in one hand while being used for voice input and voice output, and at least one connection (23, 36) for carrying voice-representative signals between the handheld unit (20) and the device (30). Device (10) allows telephone-style, voice-driven, user-interface communications both when device (30) is docked with handheld unit (20), and when device (30) is detached from handheld unit (20). Communication device (30) is made lightweight so that it can be held for an extended amount of time during lengthy phone-style conversations, and may be equipped with a formed support such as a flexible loop (26) to let the user wear device (30) on one of user's ears for hands-free use. Device (10) can also be equipped with an image scanner to serve as a digital camera or videophone.

公开(公告)号：US20060167966A1

公开(公告)日：2006-07-27

申请号：US11008717

申请日：2004-12-09

申请人： Rajendra Kumar ,  Sujoy Basu

发明人： Rajendra Kumar ,  Sujoy Basu

IPC分类号： G06F15/16

CPC分类号： G06F9/5072 ,  G06F9/5038 ,  G06F9/5044 ,  G06F9/505 ,  G06F9/5083

摘要： A scheduler for a grid computing system includes a node information repository and a node scheduler. The node information repository is operative at a node of the grid computing system. Moreover, the node information repository stores node information associated with resource utilization of the node. Continuing, the node scheduler is operative at the node. The node scheduler is configured to determine whether to accept jobs assigned to the node. Further, the node scheduler includes an input job queue for accepted jobs, wherein each accepted job is launched at a time determined by the node scheduler using the node information.

摘要翻译： 网格计算系统的调度器包括节点信息库和节点调度器。 节点信息库在网格计算系统的一个节点处运行。 此外，节点信息库存储与节点的资源利用相关联的节点信息。 继续，节点调度器在节点处工作。 节点调度器被配置为确定是否接受分配给节点的作业。 此外，节点调度器包括用于接受作业的输入作业队列，其中每个接受的作业在节点调度器使用节点信息确定的时间启动。

公开(公告)号：US06704842B1

公开(公告)日：2004-03-09

申请号：US09548009

申请日：2000-04-12

申请人： Gopalakrishnan Janakiraman ,  Rajendra Kumar

发明人： Gopalakrishnan Janakiraman ,  Rajendra Kumar

IPC分类号： G06F1200

CPC分类号： G06F12/0817 ,  G06F12/0862 ,  G06F2212/507

摘要： A network of memory and coherence controllers is provided which interconnected nodes in a cache-coherent multi-processor system. The nodes contain multiple processors operatively connected via respective caches to associated memory and coherence controllers. The system supports better processor utilization and better application performance by reducing the latency in accessing data by performing proactive speculative data transfers. In being proactive, the system speculates, without specific requests from the processors, as to what data transfers will reduce the latency and will make data transfers according to information derived from the system at any time that data transfers could be made.

摘要翻译： 提供了一种存储器和一致性控制器网络，其中高速缓存相干多处理器系统中的互连节点。 节点包含通过相应的高速缓存操作地连接到相关联的存储器和相干控制器的多个处理器。 该系统通过执行主动的投机数据传输，减少访问数据的延迟，从而支持更好的处理器利用率和更好的应用程序性能。 在积极主动的情况下，系统在没有来自处理器的具体请求的情况下推测什么数据传输将减少延迟，并且将根据从系统导出的信息在任何时间进行数据传输而进行数据传输。

公开(公告)号：US06693979B1

公开(公告)日：2004-02-17

申请号：US09482295

申请日：2000-01-13

申请人： Rajendra Kumar

发明人： Rajendra Kumar

IPC分类号： H04L2706

CPC分类号： G01S19/29 ,  G01S19/37 ,  H04L27/0014 ,  H04L2027/0055 ,  H04L2027/0063

摘要： An adaptive smoother includes a phase lock loop, a scintillation amplitude estimator and a fixed delay smoother operating on amplitude estimates for providing improved phase and/or code delay estimates of coherently modulated signals in the presence of dynamic phase process and time varying amplitudes. The adaptive smoother can be applied to GPS communication signals that are subject to fading due to small-scale temporal and spatial variations in ionospheric electron density. The adaptive smoother in a communication or navigation receiver results in improved signal tracking and navigation solutions.

摘要翻译： 自适应平滑器包括锁相环，闪烁振幅估计器和在幅度估计上操作的固定延迟平滑器，用于在存在动态相位过程和时变幅度的情况下提供相干调制信号的改进的相位和/或码延迟估计。 自适应平滑器可以应用于由于电离层电子密度的小尺度时间和空间变化而遭受衰落的GPS通信信号。 通信或导航接收机中的自适应平滑器导致改进的信号跟踪和导航解决方案。