Reverse link correlation filter in wireless communication systems
    1.
    发明申请
    Reverse link correlation filter in wireless communication systems 失效
    无线通信系统中的反向链路相关滤波器

    公开(公告)号:US20080075150A1

    公开(公告)日:2008-03-27

    申请号:US11901571

    申请日:2007-09-17

    IPC分类号: H04B1/69

    摘要: A single, common correlation filter (CF) core is provided in a receiver for recovery of data from received code division multiple access (CDMA) signals. Signals are received over CDMA channels with different data rates, where the received signals include user information such as pilot and data symbols that have been spread according to different despreading rates including tier 1, tier 2 and tier 3 rates, where tier 1 is the smallest despreading rate. The received signal is correlated at the smallest despreading rate in the correlation filter (CF) by time multiplexing delayed versions of the pseudorandom noise (PN) code. The correlated information is then demultiplexed and pilot-aided QPSK demodulated. The demodulated information is summed at the proper integer multiple of the tier 1 rate to achieve tier 2 and tier 3 despreading rates. According to an embodiment, the three strongest multipaths components in terms of the received power are selected in a window or time period for optimal information recovery.

    摘要翻译: 在接收机中提供单个公共相关滤波器(CF)核,用于从接收的码分多址(CDMA)信号中恢复数据。 在具有不同数据速率的CDMA信道上接收信号,其中所接收的信号包括诸如导频和数据符号之类的用户信息,所述导频和数据符号根据不同的解扩速率(包括层1,层2和层3速率)进行扩展,其中层1是最小的 解散率。 接收到的信号通过伪随机噪声(PN)码的延迟版本的时间复用以相关滤波器(CF)中的最小解扩频率相关。 然后将相关信息解复用并导频辅助QPSK解调。 解调信息以1级速率的适当整数倍相加,以实现2级和3级解扩速率。 根据实施例,在用于最佳信息恢复的窗口或时间段中选择关于接收功率的三个最强多径分量。

    Reverse link correlation filter in wireless communication systems
    4.
    发明申请
    Reverse link correlation filter in wireless communication systems 有权
    无线通信系统中的反向链路相关滤波器

    公开(公告)号:US20050041726A1

    公开(公告)日:2005-02-24

    申请号:US10957928

    申请日:2004-10-04

    摘要: A single, common correlation filter (CF) core is provided in a wireless system using CDMA. A plurality of channels with different data rates are provided in the wireless system. The channels provided in the wireless system include the access channel, the maintenance channel, and the traffic channel in which information (e.g., pilot or data symbols or both) is transmitted at the tier 1, tier 2 and tier 3 rates. The data rate for transmitting the information is programmable by digital signal processor (DSP). A user-unique code, such as a PN code, is applied to the information being transmitted in the channels of the wireless system. The information is QPSK modulated and transmitted in any one of the channels at any data rate. The transmitted information is correlated at the smallest data rate (i.e., the tier 1 rate) in the correlation filter (CF) of the wireless system by time multiplexing delayed versions of the PN code to the correlation filter core. The correlated information is then demultiplexed and pilot aided QPSK demodulated. The demodulated information is summed at the proper integer multiple of the tier 1 rate to achieve the tier 2 and tier 3 rates. The three strongest multipaths (in terms of the received power) are selected in a window or time period for optimal information recovery. Furthermore, three outputs from the demodulated information can be provided and combined for temporal diversity. Spatial diversity is achieved by providing a plurality of antennas at each receiver and a single, common correlation filter at each of the plurality of antennas of the receivers in the wireless system.

    摘要翻译: 在使用CDMA的无线系统中提供单个公共相关滤波器(CF)核。 在无线系统中提供具有不同数据速率的多个信道。 在无线系统中提供的信道包括接入信道,维护信道和业务信道,信道(例如,导频或数据符号或两者)以层1,层2和层3速率被传输。 用于传输信息的数据速率可由数字信号处理器(DSP)编程。 诸如PN码的用户唯一码被应用于在无线系统的频道中发送的信息。 该信息以任何数据速率在任何一个信道中进行QPSK调制和传输。 所发送的信息通过将PN码的延迟版本时间复用到相关滤波器核心,以无线系统的相关滤波器(CF)中的最小数据速率(即,层1速率)相关。 然后将相关信息解复用并进行导频辅助QPSK解调。 解调信息以1级速率的适当整数倍相加,以实现2级和3级速率。 在窗口或时间段中选择三个最强的多路径(以接收功率计),以获得最佳信息恢复。 此外,可以提供来自解调信息的三个输出并将其组合用于时间分集。 通过在每个接收机处提供多个天线以及在无线系统中的接收机的多个天线的每个天线处提供单个公共相关滤波器来实现空间分集。

    Method and apparatus for fake fingerprint detection
    5.
    发明授权
    Method and apparatus for fake fingerprint detection 有权
    伪指纹检测方法及装置

    公开(公告)号:US08666127B1

    公开(公告)日:2014-03-04

    申请号:US13204446

    申请日:2011-08-05

    IPC分类号: G06K9/00

    CPC分类号: G06K9/0012 G06K9/033

    摘要: Methods and Apparatus are provided for fake fingerprint detection. In one embodiment, an apparatus for fake fingerprint detection includes a prism having a first side configured to be touched by a fingerprint, an IR LED located near the second side of the prism, a light source located near the third side of the prism, where both the IR LED and the light source are configured to illuminate the fingerprint simultaneously to produce a captured image of the fingerprint, one or more lenses configured to direct the captured image of the fingerprint for storage, one or more CMOS sensors configured to collect the captured image of the fingerprint for analysis, and a controller configured to determine validity of the fingerprint using the captured image.

    摘要翻译: 提供了伪指纹检测的方法和装置。 在一个实施例中,一种用于假指纹检测的装置包括具有被指纹触摸的第一侧的棱镜,位于棱镜第二侧附近的IR LED,位于棱镜第三侧附近的光源, 红外LED和光源被配置为同时照亮指纹以产生指纹的捕获图像,一个或多个透镜被配置为将捕获的指纹图像引导存储,一个或多个CMOS传感器被配置为收集捕获的指纹 用于分析的指纹的图像,以及被配置为使用捕获的图像来确定指纹的有效性的控制器。

    Track unit with removable partitions
    6.
    发明申请
    Track unit with removable partitions 审中-公开
    跟踪单元与可移动分区

    公开(公告)号:US20060237384A1

    公开(公告)日:2006-10-26

    申请号:US11110429

    申请日:2005-04-20

    IPC分类号: A47F5/00

    CPC分类号: A47F1/12

    摘要: A kit for a display and dispenser track assembly for dispensing products of single width, packs of double width, and simultaneously alternately products and packs. The display track defines a plurality of fixed partitions, each adjacent pair thereof establishing a pack path of double width, and an upstanding pack stop at the front of each pack path. The kit provides at least one insertable and removable partition receivable on the display track for converting a single pack path of double width into two adjacent product paths of single width, with a pair of oppositely directed hoop stops of single width at the front of each such product path.

    摘要翻译: 用于显示和分配器轨道组件的套件,用于分配单宽度,双倍宽度的产品,以及同时交替地产品和包装的产品。 显示轨道定义多个固定分区,每个相邻对建立双宽度的包路径,以及在每个包路径的前面的直立包装停止。 该套件提供在显示轨道上可接收的至少一个可插入和可拆卸的分区,用于将单个宽度的单个包路径转换为单个宽度的两个相邻的产品路径,在每个前面的前面具有一对相反方向的单个宽度的止动件 产品路径