Closed-loop receiver feedback pre-distortion
    1.
    发明授权
    Closed-loop receiver feedback pre-distortion 有权
    闭环接收机反馈预失真

    公开(公告)号:US08385391B2

    公开(公告)日:2013-02-26

    申请号:US11549074

    申请日:2006-10-12

    IPC分类号: H04B1/38 H04L5/16

    摘要: Methods and systems for calculating pre-distortion coefficients in a closed-loop communication system are presented. Transmission terminals that include high power amplifiers are difficult to operate at or near the saturation point without transmitting signals with nonlinear distortions. By pre-distorting the signal prior to amplification the transmitted nonlinear distortions may be decreased. A closed-looped pre-distortion system may include a receiver that calculates the pre-distortion coefficients and transmits these coefficients back to the transmitter. These coefficients may be stored in a pre-distortion coefficient lookup table and may be updated by the receiver terminal.

    摘要翻译: 提出了一种用于计算闭环通信系统中预失真系数的方法和系统。 包含高功率放大器的传输终端难以在饱和点处或附近操作,而不会发射具有非线性失真的信号。 通过在放大之前预失真信号,传输的非线性失真可能会降低。 闭环预失真系统可以包括计算预失真系数并将这些系数发送回发射机的接收机。 这些系数可以存储在预失真系数查找表中,并且可以由接收机终端更新。

    Adaptive data rate control for narrowcast networks

    公开(公告)号:US08311491B2

    公开(公告)日:2012-11-13

    申请号:US13471011

    申请日:2012-05-14

    IPC分类号: H04B1/00

    摘要: A system to provide narrowcast communications uses adaptive data rate control to individual subscribers such that the effects of precipitation or other link conditions, which are not common to all subscribers, is mitigated. The invention takes advantage of the fact that the narrowcast data consist of packets which are individually addressed to specific subscribers, or groups of subscribers. The narrowcast data is communicated on a plurality of channels, each of potentially differing data rates. The subscribers are assigned a particular channel, based upon their link quality, to receive packets addressed to them. The lower data rate channel will be less affected by adverse link conditions and are hence assigned to subscribers most likely to incur adverse link conditions.

    METHOD OF MARKETING AND PROMOTING FIRST AID KIT
    3.
    发明申请
    METHOD OF MARKETING AND PROMOTING FIRST AID KIT 审中-公开
    营销和促销急救包的方法

    公开(公告)号:US20120209678A1

    公开(公告)日:2012-08-16

    申请号:US13396418

    申请日:2012-02-14

    申请人: Mark J. Miller

    发明人: Mark J. Miller

    IPC分类号: G06Q30/06 G06Q30/02

    CPC分类号: G06Q30/02 G06Q30/06

    摘要: A method of distributing first aid kits includes providing a tool to a user. The tool includes a first list and a second list. The first list includes a plurality of different environments, and the second list includes a plurality of different first aid kits. Each of the plurality of environments is correlated to individual ones of the plurality of first aid kits. The tool identifies one of the plurality of first aid kits that is appropriate for use in a corresponding one of the plurality of environments. The method also includes receiving a communication from the user that the one of the plurality of first aid kits is desired. Furthermore, the method includes transferring to the user the one of the plurality of first aid kits.

    摘要翻译: 分发急救包的方法包括向用户提供工具。 该工具包括第一个列表和第二个列表。 第一列表包括多个不同的环境,第二列表包括多个不同的急救箱。 多个环境中的每一个都与多个急救箱中的各个相关联。 该工具识别适合于在多个环境中的对应的一个环境中使用的多个急救箱中的一个。 该方法还包括从用户接收到期望多个急救箱中的一个的通信。 此外,该方法包括向用户传送多个急救箱中的一个。

    Method and apparatus for multiple access over a communication channel
    4.
    发明授权
    Method and apparatus for multiple access over a communication channel 有权
    通过通信信道进行多次访问的方法和装置

    公开(公告)号:US08218599B2

    公开(公告)日:2012-07-10

    申请号:US12356842

    申请日:2009-01-21

    IPC分类号: H04B1/00

    摘要: A communication technique based on direct sequence spread spectrum signaling employs, for all users sharing an access channel, a single spreading code that has a duration sufficiently longer than the symbol length that the likelihood of confusion between users is minimized if not eliminated. The length of the spreading code is sufficiently long that contention events can occur only when two bursts occur at the receiver within one chip time of one another.

    摘要翻译: 基于直接序列扩频信令的通信技术对于共享接入信道的所有用户使用具有足够长的持续时间的持续时间的单个扩展码,如果不消除,那么使用户之间混淆的可能性被最小化。 扩展码的长度足够长,只有当接收机在彼此的一个码片时间内发生两个突发时,才能发生争用事件。

    Non-interfering utilization of non-geostationary satellite frequency band for geostationary satellite communication
    5.
    发明授权
    Non-interfering utilization of non-geostationary satellite frequency band for geostationary satellite communication 有权
    非对地静止卫星频段的非干扰利用对地静止卫星通信

    公开(公告)号:US08068827B2

    公开(公告)日:2011-11-29

    申请号:US12248714

    申请日:2008-10-09

    IPC分类号: H04W4/00

    CPC分类号: H04B7/18528

    摘要: A method, satellite and system utilizes non-geostationary satellite orbit (NGSO) frequency spectrum in geostationary satellite orbit (GSO) satellite communication in a non-interfering manner. A ground station transmits signals to a GSO satellite using a GSO frequency band and an extended frequency spectrum including the an NGSO frequency band whenever a noninterference situation exists, i.e., when an NGSO satellite is not in-line between the earth terminal and the GSO satellite or when the NGSO satellite is not utilizing the NGSO band of interest. A command module is provided to instruct the ground station to transmit signals to the GSO satellite using the GSO frequency band and the extended frequency spectrum.

    摘要翻译: 一种方法,卫星和系统以非干扰的方式在对地静止卫星轨道(GSO)卫星通信中利用非对地静止卫星轨道(NGSO)频谱。 地面站每当存在非干扰情况时,使用GSO频带和包括NGSO频带的扩展频谱向GSO卫星发送信号,即当NGSO卫星在地球终端和GSO卫星之间不在线时, 或者NGSO卫星没有利用NGSO卫星频带。 提供了一个命令模块来指示地面站使用GSO频带和扩展频谱向GSO卫星发送信号。

    Remote nonlinearity detection via burst power dithering
    6.
    发明授权
    Remote nonlinearity detection via burst power dithering 有权
    通过突发电源抖动进行远程非线性检测

    公开(公告)号:US07894510B2

    公开(公告)日:2011-02-22

    申请号:US11772781

    申请日:2007-07-02

    IPC分类号: H04B1/38 H04L25/49 H04L7/00

    摘要: Nonlinearity characterization that transmits bursts of information where symbols vary by a value Delta. The bursts can be bursts of a constant power, followed by another burst of a different constant power. An alternative burst system uses interleaved power symbols, where some symbols in a single burst are at the first power and others are at the second power. The signal-to-noise ratio of the two groups of symbols is estimated, and the difference is used to determine whether or not to reduce the amount of saturation in the transmitter.

    摘要翻译: 发送信号突发的非线性表征,其中符号变化值Delta。 脉冲串可以是恒定功率的脉冲串,随后是不同恒定功率的另一脉冲串。 替代突发系统使用交错功率符号,其中单个脉冲串中的一些符号处于第一功率,而另一个符号处于第二功率。 估计两组符号的信噪比,并且使用该差来确定是否减少发射机中的饱和量。

    SATELLITE PERFORMANCE MONITORING
    8.
    发明申请
    SATELLITE PERFORMANCE MONITORING 有权
    卫星性能监测

    公开(公告)号:US20090195444A1

    公开(公告)日:2009-08-06

    申请号:US12361403

    申请日:2009-01-28

    申请人: Mark J. Miller

    发明人: Mark J. Miller

    IPC分类号: H04B7/185

    摘要: Techniques for monitoring transmission performance of a satellite communications systems are provided, including techniques for measuring the primary contributors to the end-to-end SNR, including the uplink SNR, the downlink SNR, and the C/I for each link in the network. These individual measurements are used to estimate satellite effective isotropic radiated power (EIRP), satellite antenna gain-to-noise-temperature (G/T), and loss due to an Earth Terminal pointing error. The EIRP, satellite antenna G/T and loss due to Earth terminal pointing error may then be used to determine operating parameters for the satellite communications network that enable the network to operate more efficiently.

    摘要翻译: 提供了用于监测卫星通信系统的传输性能的技术,包括用于测量端到端SNR的主要贡献者的技术,包括上行链路SNR,下行链路SNR和网络中每个链路的C / I。 这些单独的测量用于估计卫星有效各向同性辐射功率(EIRP),卫星天线增益 - 噪声温度(G / T)以及由于接地端子指向误差引起的损耗。 EIRP,卫星天线G / T以及由于地球终端指向误差引起的损失可用于确定卫星通信网络的运行参数,使网络能够更有效地运行。