Method and Apparatus for Reduced Power Consumption Adc Conversion
    11.
    发明申请
    Method and Apparatus for Reduced Power Consumption Adc Conversion 有权
    降低功耗Adc转换的方法和装置

    公开(公告)号:US20080030388A1

    公开(公告)日:2008-02-07

    申请号:US10554805

    申请日:2004-04-30

    CPC classification number: H03M1/1235 H03M1/664

    Abstract: A method for analog to digital conversion (ADC) characterised by; applying a non-linear transfer function to an input signal, such that the relation between the quantisation levels of the converter and the input signal vary as a non-linear function of the magnitude of the input signal. The non-linear transfer function is related to an at least approximate measurement of probability density function ‘p(x)’ of said input signal so that larger quantisation bins of the converter correspond to less probable values of the input signal.The relation is iteratively updated by updating quantisation levels.

    Abstract translation: 一种用于模数转换(ADC)的方法,其特征在于: 对输入信号应用非线性传递函数,使得转换器的量化电平与输入信号之间的关系作为输入信号幅度的非线性函数而变化。 非线性传递函数与所述输入信号的概率密度函数“p(x)”的至少近似测量相关,使得转换器的较大量化仓对应于输入信号的可能值较小。 通过更新量化水平迭代更新关系。

    Conversion between optical and radio frequency signals
    12.
    发明申请
    Conversion between optical and radio frequency signals 有权
    光和射频信号之间的转换

    公开(公告)号:US20050152631A1

    公开(公告)日:2005-07-14

    申请号:US10504009

    申请日:2003-01-13

    CPC classification number: G02F1/065 G02F1/0356 H04B10/25752

    Abstract: A detector or a modulator for converting between optical and radio frequency signals comprising an optical guide (11 to 14) for propagating two optical signal components having frequencies that differ by an amount corresponding to a radio frequency and a microstrip radio signal guide (15, 16) for propagating a radio signal at the radio frequency, the microstrip radio signal guide being in travelling-wave coupling with an interaction one (14) of the optical guide comprising material in which interaction between the optical signal components and the radio signal occur. The microstrip radio signal guide element (15, 16) comprises an electrically conductive strip (15) juxtaposed with and extending along the interaction zone (14) on one side thereof and an electrically conductive ground plane (16) juxtaposed with and extending along the interaction zone (14) on an opposite side thereof. Transition radio signal guide elements (20,21) in the form of Vivaldi antennas extending transversely to the microstrip (15) connect the microstrip radio signal guide element (15,16) with a rectangular section wave-guide (18) and a matched load. Each of the transition radio signal guide elements (20, 21) comprises an opening of progressively varying width formed in the electrically conductive ground plane of the microstrip guide (16). Radio frequency signal resonators (24 to 27) extend the ends of the microstrip (15) and the small ends of the Vivaldi antennae.

    Abstract translation: 一种用于在光学和射频信号之间转换的检测器或调制器,包括用于传播具有与射频相应的频率不同的频率的两个光信号分量的光导体(11〜14)和微带无线电信号引导件(15,16 ),用于以射频传播无线电信号,所述微带无线电信号引导件与所述光导体的相互作用一(14)进行行波耦合,所述相互作用单元包括在所述光信号分量和所述无线电信号之间发生相互作用的材料。 微带无线电信号引导元件(15,16)包括一个导电条(15),该导电条(15)在其一侧上与相互作用区(14)并置并延伸,并且导电接地平面(16)与相互作用并置并延伸 区域(14)。 以横向于微带线(15)延伸的Vivaldi天线形式的过渡无线电信号引导元件(20,21)将微带无线电信号引导元件(15,16)与矩形截面波导(18)和匹配负载 。 每个过渡无线电信号引导元件(20,21)包括在微带引导件(16)的导电接地平面中形成的逐渐变化的宽度的开口。 射频信号谐振器(24至27)延伸微带(15)的端部和维瓦第二天线的小端。

    Communication system and method of operation therefor
    13.
    发明授权
    Communication system and method of operation therefor 有权
    通信系统及其操作方法

    公开(公告)号:US08040969B2

    公开(公告)日:2011-10-18

    申请号:US12246615

    申请日:2008-10-07

    CPC classification number: H04B7/0413 H04B7/086 H04W72/121

    Abstract: A Multiple In Multiple Out (MIMO) communication system comprises an air interface scheduler for allocating air interface resource to a plurality of user equipments transmitting to a MIMO receiver. A vector processor of the scheduler determines a receive equalizer vector for the MIMO receiver for each of a plurality of user equipments in response to a channel matrix for the user equipment. The vector processor may specifically apply singular value decomposition to the channel matrix to determine the receive equalizer vector. An orthogonality processor then determines orthogonality measures between receive equalizer vectors for different sets of user equipments. A selection processor selects a set of user equipments to be allocated a shared MIMO air interface resource in response to the orthogonality measures. By scheduling in response to orthogonality of receiver operations, a reduced interference and/or reduced receiver complexity can be achieved.

    Abstract translation: 多输入多输出(MIMO)通信系统包括空中接口调度器,用于将空中接口资源分配给发射到MIMO接收机的多个用户设备。 调度器的向量处理器响应于用户设备的信道矩阵来确定用于多个用户设备中的每一个的MIMO接收机的接收均衡器向量。 向量处理器可以具体地对信道矩阵应用奇异值分解以确定接收均衡器向量。 然后,正交处理器确定用于不同用户设备组的接收均衡器向量之间的正交性度量。 选择处理器响应于正交性度量来选择要分配共享的MIMO空中接口资源的一组用户设备。 通过响应于接收机操作的正交性进行调度,可以实现降低的干扰和/或降低的接收机复杂度。

    METHOD AND APPARATUS USING SOUNDING PPDUs TO PROVIDE RANGE EXTENSION TO IEEE 802.11n SIGNALS
    14.
    发明申请
    METHOD AND APPARATUS USING SOUNDING PPDUs TO PROVIDE RANGE EXTENSION TO IEEE 802.11n SIGNALS 有权
    使用声音PPDU向IEEE 802.11n信号提供范围扩展的方法和装置

    公开(公告)号:US20100111220A1

    公开(公告)日:2010-05-06

    申请号:US12615860

    申请日:2009-11-10

    Abstract: A wireless transmitter includes a stream parser for generating a plurality of spatial streams from a digital signal and a space time block coder (STBC) for mapping each of the spatial streams to a plurality of space-time streams that each include data and a preamble for estimating a channel transfer function. The transmitter also includes a spatial mapper for spatially expanding each of the space-time streams by applying a spatial expansion matrix to data and to first training symbols used in the preamble to probe a channel experienced by the data and by applying an extension matrix to second training symbols used in the preamble to probe at least one additional dimension of the channel to enable use of beamforming to achieve range extension The spatial expansion matrix and the extension matrix form an overall matrix that has at least two orthogonal columns with different norms. The wireless transmitter also includes an analog front end for modulating the spatially expanded space-time streams onto a wireless carrier.

    Abstract translation: 无线发射机包括用于从数字信号产生多个空间流的流分析器和用于将每个空间流映射到多个空时流的空时分组编码器(STBC),每个空时流包括数据和前导码, 估计信道传递函数。 发射机还包括空间映射器,用于通过将空间扩展矩阵应用于数据和在前导码中使用的第一训练符号来空间扩展每个空时流,以探测数据所经历的信道,并通过对第二个应用扩展矩阵 在前导码中使用的训练符号以探测信道的至少一个附加维度,以使得能够使用波束成形来实现范围扩展空间扩展矩阵和扩展矩阵形成具有至少两个具有不同规范的正交列的整体矩阵。 无线发射机还包括用于将空间扩展的空时流调制到无线载波上的模拟前端。

    Optical to radio frequency detector
    15.
    发明申请
    Optical to radio frequency detector 有权
    光到射频检测器

    公开(公告)号:US20070058977A1

    公开(公告)日:2007-03-15

    申请号:US10504010

    申请日:2003-01-13

    Abstract: An optical to radio frequency detector comprising an optical guide (11 to 14) for receiving two optical signal components having frequencies that differ by an amount corresponding to a radio frequency, and a radio signal guide (15, 16) coupled with an interaction zone (14) of the optical guide for propagating a radio signal from the interaction zone at the radio frequency. the interaction zone (14) of the optical guide comprises an interaction material presenting a second-order non-linear optical polarisation characteristic to the propagatio of the optical signal components, and the radio signal guide (15,16) is in travelling-wave coupling with the interaction zone. the interaction material includes electrically orientated diazobenzene. The radio signal guide (15,16) comprises an electrically conductive strip (15) juxtaposed with and extending along the interaction zone (14) on one side thereof and an electrically conductive ground plane (16) juxtaposed with and extending along the interaction zone (14) on an opposite side thereof.

    Abstract translation: 一种光到射频检测器,包括用于接收具有与射频相对应的频率不同的频率的两个光信号分量的光导(11至14)以及与交互区耦合的无线信号引导(15,16) 14),用于在射频上传播来自相互作用区的无线电信号。 光导体的相互作用区域(14)包括对光信号分量的传播呈现二阶非线性光学偏振特性的相互作用材料,无线电信号引导件(15,16)处于行波耦合 与交互区。 相互作用材料包括电取向的重氮苯。 无线电信号引导器(15,16)包括导电条(15),该导电条(15)在其一侧上与相互作用区(14)并置并延伸,并且导电接地平面(16)并置并沿着相互作用区 14)。

    Smart tool for communication and an appliance making use thereof
    16.
    发明授权
    Smart tool for communication and an appliance making use thereof 失效
    用于通信的智能工具和使用它的设备

    公开(公告)号:US5841119A

    公开(公告)日:1998-11-24

    申请号:US647908

    申请日:1996-05-30

    CPC classification number: G06K19/07703 G06K19/0723 G06K19/07743

    Abstract: The card (40) is a plate in the form of a bank card which is provided with a power source, a microcontroller (144), a personal data memory (254), an acquired data memory (256), and a data-in-transit memory (212). Each card possesses two coupling members, i.e. a transmitter and a receiver on each of its faces, together with two manual activators (42-52) adapted to put it into operation. An operation of interchanging data between a plurality of cards (40.1, . . . , 40.4) comprises an initial step of checking feasibility in which a down stage during which the personal data in each card is accumulated (arrows 41.1, 41.2, 41.3) in the data-in-transit memories (212) of the cards disposed there beneath, and the other stage being an up stage symmetrical to the preceding stage. The end of this second stage triggers a down procedure in which the acquired data memories (256) are loaded. The last card in the stack issues an audible signal (58) to indicate that the operation has finished successfully. The card may be inserted in the appliance for making use thereof which is itself connectable to an external microcomputer, in order to display or process the acquired data, to modify the stored personal data, to enable or disable interchange thereof, or to apply a particular applications program thereto. Applications include intelligent calling cards and multipurpose cards.

    Abstract translation: PCT No.PCT / FR95 / 00062 Sec。 371日期:1996年5月30日 102(e)日期1996年5月30日PCT提交1995年1月20日PCT公布。 公开号WO95 / 21421 日期:1995年8月10日卡(40)是银行卡形式的板,其具有电源,微控制器(144),个人数据存储器(254),获取数据存储器(256) 和数据传输中存储器(212)。 每个卡具有两个耦合构件,即其每个面上的发射器和接收器,以及适于投入使用的两个手动激活器(42-52)。 在多个卡(40.1,...,40.4)之间交换数据的操作包括检查可行性的初始步骤,其中每个卡中的个人数据被累积的下降阶段(箭头41.1,41.2,41.3) 设置在其下方的卡的数据传输中存储器(212),而另一级是与前一级对称的上级。 该第二阶段的结束触发下载过程,其中所采集的数据存储器(256)被加载。 堆叠中的最后一张卡发出声音信号(58)以指示操作已成功完成。 该卡片可以插入设备中以便使用它,其本身可连接到外部微型计算机,以便显示或处理所获取的数据,修改存储的个人数据,以使其能够或不使其互换,或者应用特定的 应用程序。 应用包括智能电话卡和多功能卡。

Patent Agency Ranking