System and method for heartbeat signal generation
    1.
    发明授权
    System and method for heartbeat signal generation 有权
    用于心跳信号发生的系统和方法

    公开(公告)号:US08724486B2

    公开(公告)日:2014-05-13

    申请号:US12431606

    申请日:2009-04-28

    IPC分类号: G01R31/08 H04W4/00

    摘要: A system and method for heartbeat signal generation are provided. The method includes determining a communication condition and generating heartbeat signals based on the determined communication condition. The system includes a plurality of communication cells and at least one communication device configured to generate heartbeat signals. A rate of generating the heartbeat signals is based on one of (i) a service priority or user group and (ii) communication requirements for a network type for each of the plurality of communication cells.

    摘要翻译: 提供了用于产生心跳信号的系统和方法。 该方法包括基于确定的通信条件来确定通信条件并产生心跳信号。 该系统包括多个通信小区和被配置为产生心跳信号的至少一个通信设备。 产生心跳信号的速率基于(i)服务优先级或用户组中的一种,以及(ii)针对多个通信小区中的每一个的网络类型的通信要求。

    SYSTEM PROVIDING LAND MOBILE RADIO CONTENT USING A CELLULAR DATA NETWORK
    2.
    发明申请
    SYSTEM PROVIDING LAND MOBILE RADIO CONTENT USING A CELLULAR DATA NETWORK 有权
    使用细胞数据网络提供土地移动无线电内容的系统

    公开(公告)号:US20130044710A1

    公开(公告)日:2013-02-21

    申请号:US13628195

    申请日:2012-09-27

    IPC分类号: H04W72/04

    摘要: A system and method for providing land mobile radio (LMR) content using a cellular data network is provided. The method includes communicating the LMR content via at least one of an LMR network and a cellular data network. The method further includes encapsulating the LMR content using a packet switching protocol when communicating the LMR content via the cellular data network.

    摘要翻译: 提供了一种使用蜂窝数据网络提供陆地移动无线电(LMR)内容的系统和方法。 该方法包括通过LMR网络和蜂窝数据网络中的至少一个传送LMR内容。 该方法还包括在经由蜂窝数据网络传送LMR内容时使用分组交换协议封装LMR内容。

    Multimode land mobile radio
    3.
    发明授权
    Multimode land mobile radio 有权
    多模陆地移动无线电

    公开(公告)号:US08145262B2

    公开(公告)日:2012-03-27

    申请号:US11167005

    申请日:2005-06-24

    IPC分类号: H04M1/00

    摘要: A multimode land mobile radio (LMR) and a method of communicating land mobile radio (LMR) content using an LMR device are provided. The LMR includes an LMR communication portion configured to provide communication with an LMR network and a cellular data network communication portion configured to provide communication with a cellular data network.

    摘要翻译: 提供了多模陆地移动无线电(LMR)和使用LMR装置传送陆地移动无线电(LMR)内容的方法。 LMR包括被配置为提供与LMR网络的通信的LMR通信部分和被配置为提供与蜂窝数据网络的通信的蜂窝数据网络通信部分。

    System and method for corrected modulation with nonlinear power amplification
    4.
    发明授权
    System and method for corrected modulation with nonlinear power amplification 有权
    用非线性功率放大校正调制的系统和方法

    公开(公告)号:US08081710B2

    公开(公告)日:2011-12-20

    申请号:US11937270

    申请日:2007-11-08

    申请人: Eoin Carey

    发明人: Eoin Carey

    IPC分类号: H04L25/49

    CPC分类号: H04L27/368 H04L27/364

    摘要: A system and method for modulating and amplifying an input signal are provided in a communication transmitter. The transmitter includes a pre-distortion lookup table containing pre-distortion lookup data. An auto-calibration module is in communication with the pre-distortion lookup table. The auto-calibration module is configured to operate during a closed-loop auto-calibration interval and to calibrate the pre-distortion lookup data to compensate for a non-linearity in the transmitter. The pre-distortion is based on the pre-distortion lookup data and is used during an open-loop operational interval.

    摘要翻译: 在通信发射机中提供用于调制和放大输入信号的系统和方法。 发射机包括包含预失真查找数据的预失真查找表。 自动校准模块与预失真查找表通信。 自动校准模块配置为在闭环自动校准间隔期间运行,并校准预失真查找数据以补偿发射机中的非线性。 预失真基于预失真查找数据,并且在开环操作间隔期间使用。

    SYSTEM AND METHOD FOR EXTENDING COMMUNICATION COVERAGE IN A WIRELESS NETWORK
    5.
    发明申请
    SYSTEM AND METHOD FOR EXTENDING COMMUNICATION COVERAGE IN A WIRELESS NETWORK 有权
    用于在无线网络中扩展通信覆盖的系统和方法

    公开(公告)号:US20110194469A1

    公开(公告)日:2011-08-11

    申请号:US12704100

    申请日:2010-02-11

    IPC分类号: H04W72/04 H04J1/00

    CPC分类号: H04W16/12

    摘要: A wireless communication system may include a first base station having a first communication coverage area and operating in an HFDD mode using a first frequency and a second frequency in an alternating pattern. The system may also include a second base station having a second communication coverage area different than the first communication coverage area and also operating in an HFDD mode. The second base station may communicate using the first frequency and the second frequency in an opposite alternating pattern from the first base station.

    摘要翻译: 无线通信系统可以包括具有第一通信覆盖区域的第一基站,并且以交替模式使用第一频率和第二频率以HFDD模式操作。 该系统还可以包括具有与第一通信覆盖区域不同的第二通信覆盖区域并且还以HFDD模式操作的第二基站。 第二基站可以以与第一基站相反的交替模式的第一频率和第二频率进行通信。

    Method and apparatus for a nonlinear feedback control system
    7.
    发明授权
    Method and apparatus for a nonlinear feedback control system 有权
    非线性反馈控制系统的方法和装置

    公开(公告)号:US07889810B2

    公开(公告)日:2011-02-15

    申请号:US11639999

    申请日:2006-12-15

    CPC分类号: H03F1/3247

    摘要: A method and apparatus for a nonlinear feedback control system is disclosed, such as for electrical and electronic systems, for pre-distorting a nonlinear device. A nonlinear feedback control system includes a nonlinear device having a first input and a first output. A detection stage is in communication with the first output of the nonlinear device. A derivation stage is in communication with the detection stage, and the derivation stage is in communication with the first input of the nonlinear device.

    摘要翻译: 公开了用于非线性反馈控制系统的方法和装置,例如用于电气和电子系统,用于对非线性装置进行预失真。 非线性反馈控制系统包括具有第一输入和第一输出的非线性装置。 检测级与非线性器件的第一输出端通信。 导出级与检测级通信,导出级与非线性器件的第一输入端通信。

    Method and system for data transmission with decreased bit error rate
    8.
    发明授权
    Method and system for data transmission with decreased bit error rate 有权
    降低误码率的数据传输方法和系统

    公开(公告)号:US07729441B2

    公开(公告)日:2010-06-01

    申请号:US11516298

    申请日:2006-09-05

    IPC分类号: H04L27/00

    CPC分类号: H04L25/03834 H04L27/2075

    摘要: A method for generating a modulated carrier signal with reduced bit error rates based on a plurality of data symbols. A plurality of data symbols are received, and a digital input signal is generated based on the plurality of data symbols. The digital input signal are filtered to produce a digital output signal including a phase characteristic. The phase characteristic of the digital output signal remains close to the desired symbol phase for substantial portion of the symbol period. A carrier signal is modulated using the digital output signal to produce the modulated carrier signal.

    摘要翻译: 一种用于基于多个数据符号产生具有降低的位错误率的调制载波信号的方法。 接收多个数据符号,并且基于多个数据符号生成数字输入信号。 数字输入信号被滤波以产生包括相位特性的数字输出信号。 数字输出信号的相位特性在符号周期的实质部分保持接近期望的符号相位。 使用数字输出信号调制载波信号以产生调制载波信号。

    Secure transmission system for a digital trunked radio system
    9.
    发明授权
    Secure transmission system for a digital trunked radio system 有权
    数字集群无线电系统的安全传输系统

    公开(公告)号:US07697689B2

    公开(公告)日:2010-04-13

    申请号:US11714030

    申请日:2007-03-05

    摘要: A security system for a digital trunked radio system having a digital control channel and a plurality of working channels, wherein said working channels are assigned for temporary use of individual radio units by digital control signals transmitted over said control channel, said control channel carrying digital control signals between a base site and said radio units, comprising a digital key, said key used to limit access to the system equipment and system control channel transmissions.

    摘要翻译: 一种用于具有数字控制信道和多个工作信道的数字集群无线电系统的安全系统,其中所述工作信道被分配为通过在所述控制信道上发送的数字控制信号临时使用各个无线电单元,所述控制信道承载数字控制 基站和所述无线电单元之间的信号,包括数字密钥,所述密钥用于限制对系统设备的访问和系统控制信道传输。

    Method and apparatus for on-chip measurement of power amplifier AM/AM and AM/PM non-linearity
    10.
    发明授权
    Method and apparatus for on-chip measurement of power amplifier AM/AM and AM/PM non-linearity 失效
    功率放大器AM / AM和AM / PM非线性的片上测量方法和装置

    公开(公告)号:US07653362B2

    公开(公告)日:2010-01-26

    申请号:US11377851

    申请日:2006-03-16

    申请人: Walid K. M. Ahmed

    发明人: Walid K. M. Ahmed

    IPC分类号: H04B1/04 H01Q11/12

    CPC分类号: H04L27/367 H03F3/24

    摘要: An apparatus and method for characterizing an amplifier transmitting a band limited signal using a sample of the input signal to the amplifier and a sample of the output signal from the amplifier, where the output signal is sub-sampled. The sub-sampling frequency is chosen such that images of the band limited signal do not overlap. The input signal and the output signal in a polar format are processed to determine characteristics such AM/AM and AM/PM conversion nonlinearities.

    摘要翻译: 一种用于使用放大器的输入信号的采样和来自放大器的输出信号的样本来表征放大器发射带限信号的放大器的装置和方法,其中输出信号被子采样。 选择子采样频率使得频带限制信号的图像不重叠。 对极性格式的输入信号和输出信号进行处理,以确定AM / AM和AM / PM转换非线性特性。