发明授权
US07792181B2 Linearity evaluation method using integrations weighted by probability density function, and circuit simulator, evaluation device, communication circuit, and program using the method
有权
使用由概率密度函数加权的积分的线性评估方法，电路模拟器，评估装置，通信电路和使用该方法的程序
- 专利标题： Linearity evaluation method using integrations weighted by probability density function, and circuit simulator, evaluation device, communication circuit, and program using the method
- 专利标题（中）： 使用由概率密度函数加权的积分的线性评估方法，电路模拟器，评估装置，通信电路和使用该方法的程序
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申请号： US11571247申请日： 2005-06-13
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公开(公告)号： US07792181B2公开(公告)日： 2010-09-07
- 发明人: Shingo Yamanouchi , Kazuaki Kunihiro
- 申请人： Shingo Yamanouchi , Kazuaki Kunihiro
- 申请人地址： JP Tokyo
- 专利权人： NEC Corporation
- 当前专利权人： NEC Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Dickstein, Shapiro, LLP.
- 优先权： JP2004-185105 20040623
- 国际申请： PCT/JP2005/010768 WO 20050613
- 国际公布： WO2006/001184 WO 20060105
- 主分类号： H04B3/46
- IPC分类号： H04B3/46
摘要：
An evaluation method for linearity evaluations neither performing calculations of error vectors at multiple sampling points nor using a demodulator corresponding to a desired modulation scheme. Measuring devices (164 and 165) measure the input signal and the output signal of an evaluation object (1), to which a predetermined evaluation signal has been inputted. An evaluation unit (166) uses the input signal and the output signal of the evaluation object (1), to determine at least one of an amplitude distortion or a phase distortion of the output signal. An integration unit (169) uses the distortions to perform the integrations weighted by the probability density function of the power-to-average ratio of a predetermined modulated signal. A linearity index calculation unit (170) calculates a linearity index from the results of processing by the integration unit (169).
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