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    • 43. 发明授权
    • Fast phase estimation in digital communication systems
    • 数字通信系统中的快速相位估计
    • US6021157A
    • 2000-02-01
    • US16324
    • 1998-01-30
    • Emmanuel KanterakisSorin Davidovici
    • Emmanuel KanterakisSorin Davidovici
    • H03D3/22H04B1/707H04B1/7085H04L27/00H04L27/233H04K1/00H04L27/22
    • H04B1/7085H03D3/22H04B1/707H04L27/2332H04L2027/003H04L2027/0048
    • A system and method for synchronizing a Costas Loop for demodulating a received spread-spectrum signal having data and a first arbitrary phase angle, .phi.(t), using a phase detector, a phase unwrapping subsystem, an oscillator, a derotator and a decision device. A second arbitrary phase angle, .theta.(t), is generated from an in-phase component and a quadrature-phase component of the received spread-spectrum signal. The second arbitrary phase angle, .theta.(t), is proportional to the first arbitrary phase angle, .phi.(t). A value of .theta. proportional to .theta.(t) is then estimated. The estimated .theta. value is processed to obtain an estimate for the .phi.value, and a cosine and a sine of the estimated .phi. value are generated by the oscillator. The derotator derotates the in-phase-component and the quadrature-phase component of the received spread-spectrum signal with the cosine and the sine of the estimated .theta. value to generate a demodulated signal. The decision device evaluates the demodulated signal and outputs data.
    • 一种用于使用相位检测器,相位解包子系统,振荡器,解旋器和判定装置来同步用于解调具有数据和第一任意相位角(phi(t))的接收扩频信号的科斯塔斯循环的系统和方法 。 第二任意相位角θ(t)是从接收的扩频信号的同相分量和正交相位分量产生的。 第二任意相位角θ(t)与第一任意相位角phi(t)成比例。 然后估计与theta(t)成比例的θ值。 处理估计的θ值以获得phi值的估计,并且由振荡器产生估计的phi值的余弦和正弦。 解旋器利用估计的θ值的余弦和正弦消除接收的扩频信号的同相分量和正交相位分量,以产生解调信号。 判定装置评估解调信号并输出​​数据。
    • 46. 发明授权
    • Mobile system and method for position estimation
    • 移动系统和位置估计方法
    • US07965237B2
    • 2011-06-21
    • US12457264
    • 2009-06-05
    • Emmanuel Kanterakis
    • Emmanuel Kanterakis
    • G01S3/02
    • G01S5/0289G01S5/06
    • The present invention provides a method by which the position of a wireless emitter can be estimated by using a minimum of two wireless transceiver devices. The invention relies on physically moving the wireless transceiver devices to new position locations in order to obtain multiple time difference of arrival measurements. The time difference of arrival measurements can then be combined to derive estimates for the position of the emitter. At least one of the two wireless transceiver devices needs to be mobile with the other one fixed. Using this invention, any proportion of mobile and fixed transceiver devices can be used to derive the position of a wireless emitter. The wireless emitter to be located is not assumed to provide any information about itself to the wireless transceivers used for estimating its position location. The method is referred here as a Mobile-TDOA method or M-TDOA. The method is very general, very flexible and can be very inexpensive due to the minimum amount of hardware resources required.
    • 本发明提供了一种通过使用至少两个无线收发器装置来估计无线发射器的位置的方法。 本发明依赖于将无线收发器设备物理地移动到新的位置位置,以便获得多个到达时间差的测量值。 然后可以组合到达测量的时间差以导出发射器的位置的估计。 两个无线收发器设备中的至少一个需要移动,另一个固定。 使用本发明,可以使用任何比例的移动和固定收发器设备来导出无线发射器的位置。 未设置的无线发射器不被假定为用于估计其位置位置的无线收发器提供关于其自身的任何信息。 该方法在此被称为Mobile-TDOA方法或​​M-TDOA。 该方法非常通用,非常灵活,由于所需的硬件资源数量最少,可以非常便宜。
    • 47. 发明授权
    • Deferred access method for uplink packet channel
    • 上行分组信道的延迟访问方式
    • US07869404B2
    • 2011-01-11
    • US12233176
    • 2008-09-18
    • Emmanuel Kanterakis
    • Emmanuel Kanterakis
    • H04W4/00H04J3/16
    • H04W72/0413H04L5/0055H04W72/0426H04W74/008H04W74/0833H04W74/0866H04W88/02H04W88/08
    • The equipment and techniques disclosed herein introduce a deferred acknowledgement (DACK), in the context of a protocol for a wireless station to request and obtain access to a wireless network resource for communication of one or more data packets. Essentially, a network node, such as a wireless base station, sends the DACK instruction in response to the access request telling the requesting station that the node has heard the request but that the requesting station should defer its transmission. The requesting station need not back off and re-initiate its access request. Instead, the requesting station waits for a later acknowledgement (ACK) granting access to a resource as requested. Although the DACK provides additional signaling, this technique can still utilize a fast ACK type message, that is to say a relatively short signaling packet.
    • 本文公开的设备和技术在无线站的协议的上下文中引入延迟确认(DACK),以请求并获得对无线网络资源的访问以用于一个或多个数据分组的通信。 基本上,诸如无线基站的网络节点响应于向请求站告知节点已经听到该请求但是请求站应推迟其传输的接入请求来发送DACK指令。 请求站不需要退出并重新启动其访问请求。 相反,请求站等待稍后的确认(ACK),根据请求授予对资源的访问。 尽管DACK提供附加的信令,但是该技术仍然可以利用快速的ACK类型的消息,也就是说相对较短的信令分组。
    • 49. 发明授权
    • Optical interconnect
    • 光互连
    • US07068934B2
    • 2006-06-27
    • US10802683
    • 2004-03-17
    • Emmanuel KanterakisJian-Ming Wang
    • Emmanuel KanterakisJian-Ming Wang
    • H04J14/00
    • H04J14/02H04B10/803H04Q11/0062H04Q2011/0092
    • An optical interconnect comprises an input configured to receive light of a plurality of light wavelengths and a plurality of holographic optical elements. Each element configured to reflect one out of the plurality of light wavelengths and allowing others of the plurality of wavelengths to not be reflected. Each of a plurality of prisms is configured to rotate received light at a different angle than any of the other prisms. For each holographic optical element, one of the plurality of prisms is positioned to receive and rotate light reflected by that holographic element. Each of a plurality of beam splitters is positioned to receive light rotated by a respective one of the plurality of prisms and all the plurality of beam splitters direct light to an output of the optical interconnect.
    • 光学互连包括被配置为接收多个光波长的光的输入和多个全息光学元件。 每个元件被配置为反射多个光波长中的一个,并允许多个波长中的其它波长不被反射。 多个棱镜中的每一个被配置为以与任何其它棱镜不同的角度旋转接收的光。 对于每个全息光学元件,多个棱镜中的一个被定位成接收和旋转由该全息元件反射的光。 多个分束器中的每一个被定位成接收由多个棱镜中的相应一个棱镜旋转的光,并且所有多个分束器将光引导到光学互连的输出端。