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Extracting Fetal ECG "Expectations" term query

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jonnybgood

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Attached is a paper on Fetal ECG extraction. Adaptive noise cancellation is explained with some derivation.

I cannot understand the statement;

Screen Shot 2013-11-13 at 14.06.12.png

What does it mean by 'expectations'

pg. 5

thanks
 

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  • FHB-ANC-Algunadi-2009.pdf
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The terms in the first equation are random variables (something from probability theory). I think by "Expectations" they mean "Expected Value", which is something that makes sense when applied to random variables.
 
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