发明名称 |
Low-Amplitude Echo Estimation for a Received Communication Signal |
摘要 |
A system and method for identifying minor echoes present in an input signal in the situation where a set of major echoes has already been identified from the input signal. The method includes: computing a spectrum F corresponding to a sum of the major echoes; computing a weighted power spectrum SM of the spectrum F; subtracting the weighted power spectrum SM from a weighted power spectrum PIN of the input signal to obtain a difference spectrum; performing a stabilized division of the difference spectrum by a conjugate of the spectrum F to obtain an intermediate spectrum; computing an inverse transform of the intermediate spectrum to obtain a time-domain signal; and estimating parameters one or more of the minor echoes from the time-domain signal. The echo parameters are usable to remove at least a portion of the one or more estimated minor echoes from the input signal. |
申请公布号 |
US2014126624(A1) |
申请公布日期 |
2014.05.08 |
申请号 |
US201414150956 |
申请日期 |
2014.01.09 |
申请人 |
COHERENT LOGIX, INCORPORATED |
发明人 |
GARMANY JAN D. |
分类号 |
H04B3/23;H04B3/46 |
主分类号 |
H04B3/23 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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