公开(公告)号：US08971444B2

公开(公告)日：2015-03-03

申请号：US12536078

申请日：2009-08-05

申请人： Rajendra Kumar

发明人： Rajendra Kumar

IPC分类号： H04K1/02 ,  H03K7/06 ,  H04L27/12 ,  H04L27/156

CPC分类号： H04L27/12 ,  H04L27/156

摘要： A receiver may comprise a complex mixer for converting the modulated signal to a complex modulated signal comprising a first in-phase component and a first quadrature component. The receiver may further comprise a digital demodulator. The digital demodulator may comprise at least one processor circuit programmed for applying a phase differencer for generating an output function in terms of a phase difference of the complex modulated signal. Applying the phase differencer may comprise converting the first in-phase component to a function of a phase difference of the first in-phase component expressed in digital time, and converting the first quadrature component to a function of the phase difference of the first quadrature component expressed in digital time. The at least one processor circuit of the digital demodulator may also be programmed for applying a four quadrant inverse tangent to the output function to generate the information signal.

摘要翻译： 接收机可以包括用于将调制信号转换成包括第一同相分量和第一正交分量的复调制信号的复合混频器。 接收机还可以包括数字解调器。 数字解调器可以包括至少一个处理器电路，其被编程用于施加相位差分器，用于根据复调制信号的相位差产生输出函数。 应用相位差分器可以包括将第一同相分量转换为以数字时间表示的第一同相分量的相位差的函数，并将第一正交分量转换为第一正交分量的相位差的函数 以数字时代表达。 数字解调器的至少一个处理器电路也可以被编程为向输出功能施加四象限反正切以产生信息信号。

公开(公告)号：US20140362934A1

公开(公告)日：2014-12-11

申请号：US13913761

申请日：2013-06-10

申请人： Rajendra Kumar

发明人： Rajendra Kumar

IPC分类号： H04L27/26

CPC分类号： H04L27/2602 ,  H04L27/2614 ,  H04L27/2615 ,  H04L27/2618

摘要： Various embodiments of the invention are directed to methods and systems for multi transform OFDM transmitter and receivers with low peak to average power ratio (PAPR) signals, that have high bandwidth efficiency and are computational efficient. For example, various embodiments of the transmitter may utilize an architecture comprised of a baseband modulator, a serial to parallel converter, a bank of multiplicity NT orthonormal transforms unit, a bank of multiplicity NT inverse Fourier transforms unit, a dummy symbols generator, and a minimum PAPR evaluation unit for finding the optimum transform index n0. Various embodiments of the receiver may comprise of a transform index detection unit for the detection of the transform index imbedded in the OFDM signal.

摘要翻译： 本发明的各种实施例涉及具有低峰值与平均功率比（PAPR）信号的具有高带宽效率并且具有计算效率的多变换OFDM发射机和接收机的方法和系统。 例如，发射机的各种实施例可以利用由基带调制器，串行到并行转换器，多重组NT正交变换单元组，多重组NT逆傅里叶变换单元组，虚拟符号发生器和 用于找到最佳变换索引n0的最小PAPR评估单元。 接收机的各种实施例可以包括用于检测嵌入在OFDM信号中的变换索引的变换索引检测单元。

公开(公告)号：US08767845B2

公开(公告)日：2014-07-01

申请号：US12660617

申请日：2010-03-02

申请人： Rajendra Kumar

发明人： Rajendra Kumar

IPC分类号： H04K1/10 ,  H04L27/28

CPC分类号： H04B1/0483

摘要： Various embodiments are directed to systems and methods for processing signals comprising a first component and a second component. A bandwidth of the first component may be centered at a center frequency. A bandwidth of the second component may be offset from the center frequency by an offset frequency such that at least a portion of the bandwidth of the second component overlaps a skirt of the first component. In various embodiments, a transmitter may split a single signal to generate the first and second components, shift the frequency of the second component, recombine and transmit the two components. Also, in various embodiments, a receiver may receive the signal and derive the first and second components by correcting for cross-interference.

摘要翻译： 各种实施例涉及用于处理包括第一部件和第二部件的信号的系统和方法。 第一分量的带宽可以以中心频率为中心。 第二分量的带宽可以偏离中心频率偏移频率，使得第二分量的带宽的至少一部分与第一分量的边缘重叠。 在各种实施例中，发射机可以分离单个信号以产生第一和第二分量，移动第二分量的频率，重组并传输两个分量。 而且，在各种实施例中，接收机可以接收信号并且通过校正交叉干扰来导出第一和第二分量。

公开(公告)号：US08654889B2

公开(公告)日：2014-02-18

申请号：US12798026

申请日：2010-03-26

申请人： Rajendra Kumar

发明人： Rajendra Kumar

IPC分类号： H04L25/49

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：US08600437B2

公开(公告)日：2013-12-03

申请号：US12133980

申请日：2008-06-05

申请人： Rajendra Kumar

发明人： Rajendra Kumar

IPC分类号： H04M1/00

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

摘要： A docking display unit for physically engaging a portable computing unit and a combination of the same. The display unit may include or exclude a central processing unit and includes a housing with a hinged first and second region. The first region includes a display screen and the second region includes a keyboard. A recessed docking port is provided in the second region and is configured to receive the portable device therein. At least one connector is provided in the docking port to operationally link a central processor in the portable device with the display screen and keyboard. A touchscreen on the portable device provides a user interface for controlling the combined display unit and portable device. The portable device preferably is a smartphone.

摘要翻译： 用于物理接合便携式计算单元及其组合的对接显示单元。 显示单元可以包括或排除中央处理单元，并且包括具有铰接的第一和第二区域的壳体。 第一区域包括显示屏幕，第二区域包括键盘。 凹入的对接端口设置在第二区域中并且被配置为在其中接收便携式设备。 在对接端口中提供至少一个连接器，以将便携式设备中的中央处理器与显示屏和键盘可操作地连接。 便携式设备上的触摸屏提供用于控制组合的显示单元和便携式设备的用户界面。 便携式设备优选地是智能电话。

公开(公告)号：US08433008B2

公开(公告)日：2013-04-30

申请号：US12537516

申请日：2009-08-07

申请人： Rajendra Kumar

发明人： Rajendra Kumar

IPC分类号： H03D1/00

CPC分类号： H04B1/109

摘要： A RF receiver that comprises: (i) a complex mixer for converting a version of the RF signal to a complex baseband signal comprising an in-phase component and a quadrature component; (ii) one or more analog-to-digital converters (ADCs) connected to the complex mixer for digitizing the in-phase component and the quadrature component of the complex baseband signal; and (iii) a digital signal processor (DSP) connected the one or more ADCs. The DSP is programmed to mitigate interference in the complex baseband signal by a process that comprises the steps of: (i) performing at least one cross correlation operation involving L-length segments of the digitized in-phase and quadrature components of the complex baseband signal; and (ii) concatenating the cross-correlated L-length segments of the digitized in-phase and quadrature components of the complex baseband signal to produce digitized interference mitigated in-phase and quadrature components of the complex baseband signal.

摘要翻译： 一种RF接收机，包括：（i）用于将RF信号的版本转换成包括同相分量和正交分量的复基带信号的复合混频器; （ii）连接到复合混频器的一个或多个模数转换器（ADC），用于数字化复基带信号的同相分量和正交分量; 和（iii）连接所述一个或多个ADC的数字信号处理器（DSP）。 DSP被编程为通过包括以下步骤的处理来减轻复基带信号中的干扰：（i）执行涉及复基带信号的数字化同相和正交分量的L长度段的至少一个互相关运算 ; 并且（ii）连接复基带信号的数字化同相和正交分量的相关L长度段以产生减弱的复基带信号的同相和正交分量的数字化干扰。

公开(公告)号：US08335760B1

公开(公告)日：2012-12-18

申请号：US11053703

申请日：2005-02-07

申请人： Rajendra Kumar ,  Xiang Song

发明人： Rajendra Kumar ,  Xiang Song

IPC分类号： G06F17/30

CPC分类号： G06F9/5072 ,  G06F11/3409 ,  G06F17/30575

摘要： A grid computing system for managing utility service content. A grid computing system comprises at least one node for storing utility service content and a repository for storing user profiles that define respective portions of the utility service content. The grid computing system further comprises a grid distributed resource manager coupled to the node storing the utility service content and the repository storing user profiles. The grid distributed resource manager is operable to access a requested portion of the utility service content from the node based on a received user profile.

摘要翻译： 用于管理公用事业服务内容的网格计算系统。 网格计算系统包括用于存储实用服务内容的至少一个节点和用于存储定义效用服务内容的相应部分的用户简档的存储库。 网格计算系统还包括耦合到存储有效服务内容的节点和存储用户简档的存储库的网格分布式资源管理器。 网格分布式资源管理器可操作以基于所接收的用户简档从节点访问效用服务内容的请求部分。

公开(公告)号：US20120224658A1

公开(公告)日：2012-09-06

申请号：US13465606

申请日：2012-05-07

申请人： Rajendra Kumar

发明人： Rajendra Kumar

IPC分类号： H04L27/06

CPC分类号： H04L27/12 ,  H04L27/156

摘要： A receiver may comprise a complex mixer for converting the modulated signal to a complex modulated signal comprising a first in-phase component and a first quadrature component. The receiver may further comprise a digital demodulator. The digital demodulator may comprise at least one processor circuit programmed for applying a phase differencer for generating an output function in terms of a phase difference of the complex modulated signal. Applying the phase differencer may comprise converting the first in-phase component to a function of a phase difference of the first in-phase component expressed in digital time, and converting the first quadrature component to a function of the phase difference of the first quadrature component expressed in digital time. The at least one processor circuit of the digital demodulator may also be programmed for applying a four quadrant inverse tangent to the output function to generate the information signal.

摘要翻译： 接收机可以包括用于将调制信号转换成包括第一同相分量和第一正交分量的复调制信号的复合混频器。 接收机还可以包括数字解调器。 数字解调器可以包括至少一个处理器电路，其被编程用于施加相位差分器，用于根据复调制信号的相位差产生输出函数。 应用相位差分器可以包括将第一同相分量转换为以数字时间表示的第一同相分量的相位差的函数，并将第一正交分量转换为第一正交分量的相位差的函数 以数字时代表达。 数字解调器的至少一个处理器电路也可以被编程为向输出功能施加四象限反正切以产生信息信号。

公开(公告)号：US20100306426A1

公开(公告)日：2010-12-02

申请号：US12599062

申请日：2008-05-14

申请人： Johannes Boonstra ,  Sundaravaradan Rangarajan ,  Rajendra Kumar

发明人： Johannes Boonstra ,  Sundaravaradan Rangarajan ,  Rajendra Kumar

IPC分类号： G06F5/14

CPC分类号： G06F5/12

摘要： A FIFO memory circuit is for interfacing between circuits with different clock domains. The circuit has a FIFO memory (10), a write pointer circuit (16) clocked by the clock of a first clock domain and controlling the memory location to which data is written, and a read pointer circuit clocked by the clock of a second clock domain and controlling the memory location from which data is read. The read and write pointer circuits use gray coding. The memory circuit further comprises a duplicate write pointer circuit (30) which has its write pointer address incremented synchronously with the write pointer circuit (16), and which has a starting write address selected such that the duplicate write pointer address lags behind the write pointer address circuit by a number of address locations corresponding to the size of the FIFO memory (10). A comparator (34) compares the read pointer circuit address with the duplicate write pointer circuit address for determining a full status of the FIFO memory.

摘要翻译： FIFO存储器电路用于在具有不同时钟域的电路之间进行接口。 电路具有FIFO存储器（10），由第一时钟域的时钟定时并且控制写入数据的存储器位置的写指针电路（16）以及由第二时钟的时钟脉冲定时的读指针电路 并控制读取数据的存储器位置。 读写指针电路采用灰度编码。 存储器电路还包括一个重写写指针电路（30），它具有与写指针电路（16）同步增加的写指针地址，并且具有选择的开始写地址，使得重写写指针地址落在写指针后面 地址电路由与FIFO存储器（10）的大小对应的多个地址位置。 比较器（34）将读取指针电路地址与用于确定FIFO存储器的完整状态的重复写指针电路地址进行比较。

公开(公告)号：US07831276B2

公开(公告)日：2010-11-09

申请号：US11539373

申请日：2006-10-06

申请人： Rajendra Kumar

发明人： Rajendra Kumar

IPC分类号： H04M1/00

CPC分类号： H04M1/0256 ,  B60R11/0252 ,  B60R2011/0029 ,  B60R2011/0071 ,  G06F1/1626 ,  G06F1/1632 ,  G06F1/1656 ,  H04M1/72527

摘要： The present invention relates in general to portable processor based devices that provide computing, communication or entertainment functionality. More particularly, the present invention pertains to portable processor based devices operable while being held in its user's hand and providing communications, organizer and/or entertainment functions, such as cellular telephones, palm-sized organizers, and MP3 players, and to portable processor based devices providing general computing capabilities, such as laptop or handheld personal computers (PCs). More specifically, the present invention relates to systems that detachably mate a plurality of portable processor based devices to provide their combined functionality in an integrated structure.

摘要翻译： 本发明一般涉及提供计算，通信或娱乐功能的基于便携式处理器的设备。 更具体地，本发明涉及基于便携式处理器的设备，其可操作在被保持在其用户的手中并且提供通信，组织者和/或娱乐功能，诸如蜂窝电话，掌上型组织器和MP3播放器，以及基于便携式处理器 提供通用计算能力的设备，例如膝上型或手持式个人计算机（PC）。 更具体地，本发明涉及可拆卸地配合多个基于便携式处理器的设备以在其集成结构中提供其组合功能的系统。