发明申请
US20050259721A1 Noise power estimation apparatus, noise power estimation method and signal detection apparatus
失效
噪声功率估计装置，噪声功率估计方法和信号检测装置
- 专利标题： Noise power estimation apparatus, noise power estimation method and signal detection apparatus
- 专利标题（中）： 噪声功率估计装置，噪声功率估计方法和信号检测装置
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申请号： US11128188申请日： 2005-05-13
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公开(公告)号： US20050259721A1公开(公告)日： 2005-11-24
- 发明人: Junichiro Kawamoto , Noriyuki Maeda , Kenichi Higuchi , Mamoru Sawahashi
- 申请人： Junichiro Kawamoto , Noriyuki Maeda , Kenichi Higuchi , Mamoru Sawahashi
- 申请人地址： JP Tokyo
- 专利权人： NTT DoCoMo, Inc.
- 当前专利权人： NTT DoCoMo, Inc.
- 当前专利权人地址： JP Tokyo
- 优先权： JP2004-144181 20040513
- 主分类号： H04J99/00
- IPC分类号： H04J99/00 ; H04B1/10 ; H04B7/005 ; H04B7/04 ; H04B7/08 ; H04L25/02 ; H04B1/707
摘要：
A noise power estimation apparatus is disclosed. The noise power estimation apparatus includes: a part for calculating correlation between a received signal and a pilot signal so as to obtain a received power of the pilot signal for each path; a part for removing a multipath interference component from the received power of the pilot signal by using a predetermined power ratio between the pilot signal and a data signal so as to obtain a corrected received power of the pilot signal; a part for estimating an estimated total power of the pilot signal and the data signal included in the received signal based on the corrected received power and the predetermined power ratio; and a part for subtracting the estimated total power from a total power of the received signal so as to obtain a noise power.
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