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    Receiver in a spread spectrum communication system having low power analog multipliers and adders
    1.
    发明授权
    Receiver in a spread spectrum communication system having low power analog multipliers and adders 失效
    具有低功耗模拟乘法器和加法器的扩频通信系统中的接收机

    公开(公告)号：US06278724B1

    公开(公告)日：2001-08-21

    申请号：US09032776

    申请日：1998-03-06

    Applicant: Changming Zhou ,  Guoliang Shou ,  Kunihiko Suzuki ,  Xuping Zhou ,  Xiaoling Qin ,  Jie Chen ,  Mamoru Sawahashi ,  Fumiyuki Adachi

    Inventor： Changming Zhou ,  Guoliang Shou ,  Kunihiko Suzuki ,  Xuping Zhou ,  Xiaoling Qin ,  Jie Chen ,  Mamoru Sawahashi ,  Fumiyuki Adachi

    IPC: H04L2732

    CPC classification number: H04B1/7113 ,  H04B1/7117 ,  H04B1/712 ,  H04B1/7183

    Abstract: A signal reception apparatus in the spread spectrum communication system requires only a small amount of circuitry and consumes a small amount of electric power. A quadrature detector decomposes received signals into in-phase components and quadrature components, and supplies them to a complex-type matched filter. The complex-type matched filter de-spreads the in-phase components and the quadrature components and sends them to a multi-path selector. The multi-path selector selects, from among the received de-spread signals, multiple paths having high levels of signal electric powers and sends the received signals of the selected paths to multiple phase correction blocks. Analog operation circuits calculate phase errors of the received signals of two successive pilot symbol blocks for each path. An analog operation circuit corrects the phases of the received signals of the information symbol block that has been received between the two successive pilot symbol blocks. A rake combiner synchronously combines the phase-corrected de-spread received signals of each path.

    Abstract translation: 扩频通信系统中的信号接收装置仅需要少量的电路并消耗少量的电力。 正交检测器将接收信号分解为同相分量和正交分量，并将其提供给复合型匹配滤波器。 复合型匹配滤波器对同相分量和正交分量进行解扩，并将它们发送到多路径选择器。 多径选择器从接收到的解扩信号中选择具有高电平信号电功率的多个路径，并将所选择的路径的接收信号发送到多个相位校正块。 模拟运算电路计算每个路径的两个连续导频符号块的接收信号的相位误差。 模拟运算电路校正在两个连续的导频符号块之间已经接收到的信息符号块的接收信号的相位。 瑞克组合器同步地组合每个路径的相位校正的去扩展接收信号。

    Matched filter
    2.
    发明授权
    Matched filter 失效
    匹配过滤器

    公开(公告)号：US5887024A

    公开(公告)日：1999-03-23

    申请号：US780145

    申请日：1996-12-26

    Applicant: Xiaoling Qin ,  Kunihiko Suzuki ,  Guoliang Shou ,  Changming Zhou ,  Jie Chen

    Inventor： Xiaoling Qin ,  Kunihiko Suzuki ,  Guoliang Shou ,  Changming Zhou ,  Jie Chen

    IPC: H03H11/04 ,  H03H17/02 ,  H04B15/00 ,  H04K1/00 ,  H04L27/30

    CPC classification number: H03H11/04 ,  H03H17/02

    Abstract: The present invention provides a matched filter which can refresh an entire while keeping the speed of a calculation comparable to a small sized circuit. The first and second addition circuits of a matched filter of the present invention are classified into a plurality of groups, the first and second auxiliary adders replace functions for the groups of the first and second adders respectively. The outputs of the first and second adders are then inputted to the first and second subtractors, respectively, and the refreshing means appropriately refreshes the groups replaced by the first and second auxiliary adders. Further, the present invention decreases the number of auxiliary sapling and holding circuits to be used, and decides the refreshing intervals by considering the change of the voltage caused by leakage and other permissible errors of output voltage.

    Abstract translation: 本发明提供了一种匹配滤波器，其可以保持与小尺寸电路相当的计算速度的整体刷新。 本发明的匹配滤波器的第一和第二加法电路分为多个组，第一和第二辅助加法器分别代替第一和第二加法器的组的功能。 然后，第一和第二加法器的输出分别输入到第一和第二减法器，并且刷新装置适当地刷新由第一和第二辅助加法器替换的组。 此外，本发明减少了要使用的辅助树苗和保持电路的数量，并且通过考虑由漏电引起的电压的变化和输出电压的其他允许误差来决定刷新间隔。

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