Channel impairment emulator systems and methods
    1.
    发明授权
    Channel impairment emulator systems and methods 有权
    通道障碍模拟器系统和方法

    公开(公告)号:US07890821B2

    公开(公告)日:2011-02-15

    申请号:US11867580

    申请日:2007-10-04

    IPC分类号: G01R31/28 H04B17/00

    摘要: Systems and methods are disclosed herein to provide improved communication system test techniques. For example, in accordance with an embodiment of the present invention, a wireless device test system is disclosed having a channel emulator for multipath and/or MIMO applications to allow the testing of wireless devices (e.g., WLAN devices) in a cabled environment.

    摘要翻译: 本文公开了系统和方法,以提供改进的通信系统测试技术。 例如,根据本发明的实施例,公开了一种无线设备测试系统,其具有用于多路径和/或MIMO应用的信道仿真器,以允许在有线环境中测试无线设备(例如,WLAN设备)。

    Detection of unknown symbol rate in a digitally modulated signal
    2.
    发明授权
    Detection of unknown symbol rate in a digitally modulated signal 有权
    在数字调制信号中检测未知符号速率

    公开(公告)号:US07376204B1

    公开(公告)日:2008-05-20

    申请号:US11083625

    申请日:2005-03-16

    申请人: Wayne D. Music

    发明人: Wayne D. Music

    IPC分类号: H04L27/00

    CPC分类号: H04L27/0008 H04L25/0262

    摘要: In one embodiment of the invention, a symbol rate detector includes a nonlinear device to receive a pass band signal, a component to apply a Fourier Transform to a signal provided by the filter, and logic to select a peak frequency component from results of applying the Fourier Transform and to apply the peak frequency component as a symbol rate of a base band signal corresponding to the pass band signal.

    摘要翻译: 在本发明的一个实施例中,符号率检测器包括用于接收通带信号的非线性装置,将由傅里叶变换应用于由滤波器提供的信号的部件,以及从施加滤波器的结果中选择峰值频率分量的逻辑 傅里叶变换,并将峰值频率分量作为与通带信号对应的基带信号的符号率进行应用。

    CHANNEL IMPAIRMENT EMULATOR SYSTEMS AND METHODS
    7.
    发明申请
    CHANNEL IMPAIRMENT EMULATOR SYSTEMS AND METHODS 有权
    通道损伤仿真器系统和方法

    公开(公告)号:US20090094492A1

    公开(公告)日:2009-04-09

    申请号:US11867580

    申请日:2007-10-04

    IPC分类号: G06F11/26

    摘要: Systems and methods are disclosed herein to provide improved communication system test techniques. For example, in accordance with an embodiment of the present invention, a wireless device test system is disclosed having a channel emulator for multipath and/or MIMO applications to allow the testing of wireless devices (e.g., WLAN devices) in a cabled environment.

    摘要翻译: 本文公开了系统和方法,以提供改进的通信系统测试技术。 例如,根据本发明的实施例,公开了一种无线设备测试系统,其具有用于多路径和/或MIMO应用的信道仿真器,以允许在有线环境中测试无线设备(例如,WLAN设备)。