发明授权
- 专利标题： Detecting apparatus, calculating apparatus, measurement apparatus, detecting method, calculating method, transmission system, program, and recording medium
- 专利标题（中）： 检测装置，计算装置，测量装置，检测方法，计算方法，传输系统，程序和记录介质
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申请号： US12424543申请日： 2009-04-16
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公开(公告)号： US08306132B2公开(公告)日： 2012-11-06
- 发明人: Takafumi Aoki , Takahiro Yamaguchi , Katsuhiko Degawa
- 申请人： Takafumi Aoki , Takahiro Yamaguchi , Katsuhiko Degawa
- 申请人地址： JP Tokyo
- 专利权人： Advantest Corporation
- 当前专利权人： Advantest Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Jianq Chyun IP Office
- 主分类号： H04L27/28
- IPC分类号： H04L27/28
摘要：
Provided is a detection apparatus that detects a phase alignment error between transmission signals transmitted on different channels, comprising a correlation calculating section that calculates a cross-spectrum between the transmission signals based on a result of a measurement of the transmission signals transmitted in the channels; a phase difference calculating section that calculates a phase difference spectrum between the transmission signals based on the cross-spectrum calculated by the correlation calculating section; and a detecting section that detects a difference between transmission times of the transmission signals transmitted on the different channels and a phase offset between the transmission signals, based on the phase difference spectrum calculated by the phase difference calculating section.
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