公开(公告)号：US08699619B2

公开(公告)日：2014-04-15

申请号：US12941216

申请日：2010-11-08

Applicant: Hendrik Visser ,  Roeland Heijna ,  Norbert Van Den Bos

Inventor： Hendrik Visser ,  Roeland Heijna ,  Norbert Van Den Bos

IPC: H04K1/02 ,  H04L25/03 ,  H04L25/49

CPC classification number: H03F3/217 ,  H03F1/02 ,  H03F3/24

Abstract: An amplification unit reduces a duty cycle of a digital signal at a carrier radio frequency to optimize the efficiency of the RF power amplifier that amplifies the reduced duty cycle signal. An exemplary amplification unit includes a duty cycle controller and a digital power amplifier. A delay unit in the duty cycle controller applies a delay to an input digital signal at the carrier radio frequency to generate a delayed signal at the carrier radio frequency. A logic gate in the duty cycle controller logically combines the input digital signal with the delayed signal to generate a modified digital signal at the carrier radio frequency, where the modified input digital signal has a reduced duty cycle relative to that of the input digital signal. Amplifying the modified digital signal in the digital RF power amplifier generates an amplified analog signal at the carrier radio frequency while improving amplifier efficiency.

Abstract translation: 放大单元减少载波射频处的数字信号的占空比，以优化放大减小占空比信号的RF功率放大器的效率。 示例性放大单元包括占空比控制器和数字功率放大器。 占空比控制器中的延迟单元在载波射频处对输入数字信号施加延迟，以在载波射频产生延迟信号。 占空比控制器中的逻辑门逻辑地组合输入数字信号与延迟信号，以在载波射频处产生修改的数字信号，其中修改的输入数字信号相对于输入数字信号的占空比减小。 在数字RF功率放大器中放大修改的数字信号在载波射频时产生放大的模拟信号，同时提高放大器的效率。

公开(公告)号：US08687719B2

公开(公告)日：2014-04-01

申请号：US13001934

申请日：2009-07-04

Applicant: Merouane Debbah ,  Romain Couillet

Inventor： Merouane Debbah ,  Romain Couillet

IPC: H04K1/10 ,  H04L27/28

CPC classification number: H04L27/2627 ,  H04J11/003 ,  H04J11/0063

Abstract: An OFDM modulation process and means for transmitting multiple carriers through a communication channel having a bandwidth arranged ion chunks with further subcarriers being allocated to form at least one guard band, comprising automatically and periodically shifting said chunks to the left or to the side in order to overlap said guard band and increase spectral diversity.

Abstract translation: 一种OFDM调制处理和装置，用于通过具有布置离散块的带宽的通信信道来发送多个载波，所述多个载波具有进一步的子载波被分配以形成至少一个保护频带，包括自动地周期性地将所述块向左或向侧移动，以便 覆盖所述保护带并增加频谱多样性。

公开(公告)号：US09027088B2

公开(公告)日：2015-05-05

申请号：US13866259

申请日：2013-04-19

Applicant: ST-Ericsson SA

Inventor： Stefan Runeson ,  Per Stahl

IPC: H04W12/06 ,  H04L29/06 ,  G06F21/44

CPC classification number: H04W12/06 ,  G06F21/44 ,  H04L63/08 ,  H04L65/1006 ,  H04L65/1016 ,  H04L65/1073

Abstract: Systems and methods are provided for authenticating Internet Protocol (IP) Multimedia Subsystem (IMS) applications in a User Equipment (UE). A method includes: receiving a first Session Initiation Protocol (SIP) REGISTER message from an IMS application operating on the UE; transmitting a response message to the IMS application based on the received first SIP REGISTER message; receiving a second SIP REGISTER message from the IMS application operating on the UE; determining authentication for the IMS application based on the received second SIP REGISTER message from the IMS application operating on the UE; and based on the step of determining authentication for the IMS application, if the IMS application is authorized, then transmitting information associated with the first and second SIP REGISTER messages toward a SIP node or if the IMS application is unauthorized, then discarding data associated with the first and second SIP REGISTER messages.

Abstract translation: 提供了用于在用户设备（UE）中验证因特网协议（IP）多媒体子系统（IMS）应用的系统和方法。 一种方法包括：从在UE上操作的IMS应用接收第一会话发起协议（SIP）REGISTER消息; 基于所接收的第一SIP REGISTER消息向IMS应用发送响应消息; 从在UE上操作的IMS应用接收第二SIP REGISTER消息; 基于从UE上运行的IMS应用接收的第二SIP REGISTER消息确定IMS应用的认证; 并且基于为IMS应用确定认证的步骤，如果IMS应用被授权，则向SIP节点发送与第一和第二SIP注册消息相关联的信息，或者如果IMS应用未授权，则丢弃与 第一和第二SIP注册消息。

公开(公告)号：US08966300B2

公开(公告)日：2015-02-24

申请号：US13252661

申请日：2011-10-04

Applicant: Orlando Miguel Pires Dos Reis Moreira

Inventor： Orlando Miguel Pires Dos Reis Moreira

IPC: G06F1/00 ,  G06F1/32 ,  G06F15/177 ,  G06F9/455

CPC classification number: G06F1/324 ,  G06F1/329 ,  G06F1/3296 ,  Y02D10/126 ,  Y02D10/24

Abstract: One or more tasks to be executed on one or more processors are formulated into a graph, with dependencies between the tasks defined as edges in the graph. In the case of a Radio Access Technology (RAT) application, the graph is iterative, whereby each task may be activated a number of times that may be unknown at compile time. A discrete number of allowable frequencies for processors while executing tasks are defined, and the power dissipation of the processors at those frequencies determined. A linear programming problem is then formulated and solved, which minimizes the overall power dissipation across all processors executing all tasks, subject to several constraints that guarantee complete and proper functionality. The switching of processors executing the tasks between operating points (frequency, voltage) may be controlled by embedding instructions into the tasks at design or compile time, or by a local supervisor monitoring execution of the tasks.

Abstract translation: 要在一个或多个处理器上执行的一个或多个任务被制定成图，其中任务之间的依赖性被定义为图中的边。 在无线电接入技术（RAT）应用的情况下，该图是迭代的，由此每个任务可以被激活多次，这在编译时可能是未知的。 定义执行任务时处理器允许频率的离散数量，并确定处理器在这些频率下的功耗。 然后，制定和解决了线性规划问题，从而最大程度地降低了执行所有任务的所有处理器的总体功耗，并受到保证完整和正确功能的若干限制。 在操作点（频率，电压）之间执行任务的处理器的切换可以通过在设计或编译时将任务嵌入到任务中，或者由监视执行任务的本地主管来控制。

公开(公告)号：US08897734B2

公开(公告)日：2014-11-25

申请号：US13664014

申请日：2012-10-30

Applicant: ST-Ericsson SA

Inventor： Janne Olavi Peltonen

IPC: H04B7/00

CPC classification number: H04B17/10 ,  H03H7/40 ,  H04B1/40 ,  H04B17/103 ,  H04B17/12 ,  H04B17/13

Abstract: The invention provides circuitry integrated into a silicon chip that measures aspects of an RF signal on a transmission line in order to provide data that is ultimately used by an antenna tuner circuit to substantially match the impedance of the antenna with that of the transmission line providing the RF frequency to be transmitted.

Abstract translation: 本发明提供集成到硅芯片中的电路，其测量传输线上的RF信号的各方面，以便提供最终由天线调谐器电路使用的数据，以将天线的阻抗与传输线的阻抗基本匹配， RF频率要传输。

公开(公告)号：US20140314175A1

公开(公告)日：2014-10-23

申请号：US14357633

申请日：2012-11-14

Applicant: Ericsson Modems SA

Inventor： Magnus Nilsson

IPC: H04L27/20

CPC classification number: H04L27/20 ,  H03F1/02 ,  H03F3/24 ,  H04B1/0475 ,  H04B2001/045

Abstract: A wireless communication device (400) is arranged to transmit a transmission signal in an assigned channel bandwidth. The wireless communication device (400) comprises: a local oscillator (460) arranged to generate a local oscillator signal at a local oscillator frequency and a modulator (434) arranged for converting in-phase and quadrature-phase components of a modulation signal at a modulation frequency to a radio frequency by mixing the in-phase and quadrature-phase components with the local oscillator signal. The local oscillator frequency is arranged to place a third order intermodulation product having a frequency equal to the local oscillator frequency minus three times the modulation frequency within the assigned channel bandwidth.

Abstract translation: 无线通信设备（400）被布置为以分配的信道带宽发送传输信号。 无线通信设备（400）包括：本地振荡器（460），其被布置为以本地振荡器频率产生本地振荡器信号;以及调制器（434），其被配置用于将调制信号的同相和正交相位分量转换为 通过将同相和正交相分量与本地振荡器信号混合，将调制频率转换为射频。 本地振荡器频率被布置成将具有等于本地振荡器频率的频率的三阶互调乘积减去在分配的信道带宽内的调制频率的三倍。

公开(公告)号：US08841950B2

公开(公告)日：2014-09-23

申请号：US13500575

申请日：2010-10-08

Applicant: Shyam S. Somayajula ,  Ankit Seedher ,  Raja J. Prabhu

Inventor： Shyam S. Somayajula ,  Ankit Seedher ,  Raja J. Prabhu

IPC: H03K3/017 ,  H03F1/26 ,  H03K7/08 ,  H03F3/217

CPC classification number: H03F3/2173 ,  H03F1/26 ,  H03F2200/03 ,  H03F2200/33 ,  H03F2200/351 ,  H03F2200/384 ,  H03K7/08

Abstract: A device and a method for implementing pulse width modulation for switching amplifiers (120) is described herein. In one embodiment, the device includes a sampling signal generator (202) to generate a sampling signal (208) and a modulation unit (102) operatively coupled to the sampling signal generator (202). The modulation unit (102) generates differential pulse width modulated waveforms based on the sampling signal (208) and differential input signals (220-1 and 220-2) such that at least one differential pulse width modulated waveform has a duty cycle equivalent to a pre-determined non-zero minimum pulse width at all values of the differential input signals (220-1 and 220-2).

Abstract translation: 本文描述了用于实现开关放大器（120）的脉冲宽度调制的装置和方法。 在一个实施例中，该装置包括采样信号发生器（202），用于产生可操作地耦合到采样信号发生器（202）的采样信号（208）和调制单元（102）。 调制单元（102）基于采样信号（208）和差分输入信号（220-1和220-2）产生差分脉冲宽度调制波形，使得至少一个差分脉冲宽度调制波形的占空比等于 在差分输入信号（220-1和220-2）的所有值处的预定非零最小脉冲宽度。

公开(公告)号：US08779863B2

公开(公告)日：2014-07-15

申请号：US13508414

申请日：2010-11-19

Applicant: Magnus Nilsson

Inventor： Magnus Nilsson

IPC: H03L7/06

CPC classification number: H03L7/099 ,  H03L7/1976

Abstract: A method of generating a first oscillator signal having a desired frequency in a first frequency range comprises generating in a voltage controlled oscillator unit a second oscillator signal having a frequency in a second frequency range of at least one octave. The method further comprises selecting said second continuous frequency range to have a lower endpoint in said first frequency range and an upper endpoint above said range; and selectively using the oscillator signal unchanged or dividing it by a division ratio selected from integer powers of the number 2 to obtain said first oscillator signal. By centering the VCO higher than otherwise required and using an additional divider, so that the VCO signal can selectively be used unchanged or divided, a sufficient margin below as well as above the desired range for e.g. drift and tolerances of the VCO is achieved. It also simplifies the VCO design.

Abstract translation: 在第一频率范围内产生具有期望频率的第一振荡器信号的方法包括在压控振荡器单元中产生具有至少一个八度的第二频率范围内的频率的第二振荡器信号。 所述方法还包括选择所述第二连续频率范围以在所述第一频率范围内具有较低端点，并且在所述范围之上具有上端点; 并且选择性地使用振荡器信号或将其除以从数字2的整数倍数中选择的分频比来获得所述第一振荡器信号。 通过使VCO高于其他要求并使用附加的分压器，使得VCO信号可以选择性地不变地或不分割地使用，低于以上以及高于例如范围的期望范围的足够余量。 实现VCO的漂移和公差。 它也简化了VCO设计。

公开(公告)号：US08707146B2

公开(公告)日：2014-04-22

申请号：US12865702

申请日：2009-02-05

Applicant: Sébastien Charpentier ,  Andrea Ancora

Inventor： Sébastien Charpentier ,  Andrea Ancora

IPC: H03M13/03

CPC classification number: H04L1/0051 ,  H03M13/2975

Abstract: A method for conditionally stopping execution of a turbo decoder is proposed. The decoder has elementary decoders. Each elementary decoder performs a sequence of decoding operations and is arranged to receive an input from at least one other elementary decoder. The method determines for each specific decoding operation if the sequence of elementary decoding operations of the specific elementary decoder has substantially converged or substantially diverged. The method terminates the execution of decoding operations if a number of sequences has substantially converged or substantially diverged.

Abstract translation: 提出了有条件地停止执行turbo解码器的方法。 解码器具有基本解码器。 每个基本解码器执行解码操作的序列，并且被布置成从至少一个其他基本解码器接收输入。 如果特定基本解码器的基本解码操作的序列已经基本上收敛或基本上发散，则该方法确定每个特定解码操作。 如果序列数目基本上收敛或基本上分散，则该方法终止解码操作的执行。

公开(公告)号：US08670429B2

公开(公告)日：2014-03-11

申请号：US13142782

申请日：2009-12-29

Applicant: Andrea Ancora ,  Issam Toufik

Inventor： Andrea Ancora ,  Issam Toufik

IPC: H04J1/00

CPC classification number: H04L27/2647 ,  H04L5/0007 ,  H04L5/0053

Abstract: To detect a cell-specific synchronization signal, a modified correlation approach is used, which removes the need for channel estimation.

Abstract translation: 为了检测小区特定的同步信号，使用修改的相关方法，这消除了信道估计的需要。