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1. 发明授权

US07684528B2 Method for whitening colored noise in a communication system 有权
标题翻译：在通信系统中增白色噪声的方法
公开(公告)号：US07684528B2
公开(公告)日：2010-03-23
申请号：US10940137
申请日：2004-09-14
申请人： Eric Ojard , Amit Goutam Bagchi
发明人： Eric Ojard , Amit Goutam Bagchi
IPC分类号： H04B1/10
CPC分类号： H04L25/03006 , H04B1/1036 , H04B1/123 , H04L1/0001
摘要： A filter settings generation operation includes sampling colored noise present at the input of a receiver to produce a sampled signal. The sampled signal is spectrally characterized across a frequency band of interest to produce a spectral characterization of the sampled signal. This spectral characterization may not include a signal of interest. The spectral characterization is then modified to produce a modified spectral characterization. Filter settings are then generated based upon the modified spectral characterization. Finally, the input present at the receiver is filtered using the filter settings when the signal of interest is present to whiten colored noise that is present with the signal of interest. In modifying the spectral characterization, pluralities of spectral components of the spectral characterization are independently modified to produce the modified spectral characterization. Modifications to the spectral characterization may be performed in the frequency domain and/or the time domain. Particular modifications include amplifying spectral components, weighting spectral components based upon prior spectral components, and averaging spectral components with prior spectral components.
摘要翻译：滤波器设置生成操作包括在接收器的输入处存在的彩色噪声采样以产生采样信号。采样信号在感兴趣的频带上进行频谱表征，以产生采样信号的频谱表征。该光谱特性可能不包括感兴趣的信号。然后修改光谱表征以产生修改的光谱表征。然后基于修改的光谱表征生成滤波器设置。最后，当感兴趣的信号存在时，使用滤波器设置对存在于接收机处的输入进行滤波，以增加与感兴趣信号一起出现的彩色噪声。在修改光谱表征时，光谱表征的多个光谱分量被独立地修改以产生经修改的光谱表征。频谱表征的修改可以在频域和/或时域中执行。具体的修改包括放大频谱分量，基于现有频谱分量对频谱分量进行加权，以及对具有先前频谱分量的频谱分量进行平均。

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