Measurement of signal quality
    1.
    发明授权
    Measurement of signal quality 有权
    信号质量测量

    公开(公告)号:US06718296B1

    公开(公告)日:2004-04-06

    申请号:US09786885

    申请日:2001-03-09

    IPC分类号: G10L1900

    CPC分类号: H04M3/2236

    摘要: Apparatus for assessing the performance of telecommunications systems by comparison of a reference signal with the same signal as degraded by the system under test tends to give unreliable results when used to test connectionless packet-switching equipment. This is because variable delay in delivery of the individual packets can result in the test signal and reference signal becoming unsynchronised. This may lead to the apparatus recording a poorer performance than a human tester would have recorded. To overcome this problem, the invention separates the test signal into a series of individual sections, which are synchgronised and analysed separately, and a quality value, aggregated over all the sections, is derived.

    摘要翻译: 通过比较参考信号与被被测系统劣化的相同信号来评估电信系统的性能的装置在用于测试无连接分组交换设备时趋于给出不可靠的结果。 这是因为单个分组的传送中的可变延迟可导致测试信号和参考信号变得不同步。 这可能导致设备记录比人类测试人员记录的更差的性能。 为了克服这个问题,本发明将测试信号分成一系列单独的部分,这些部分被同步化并分开分析,得出了在所有部分上聚集的质量值。