How to filter noise when it has the same frequency as the signal

It seems that they just has a difference on the magnitude.

P.S. It is a OOK signal on receiver.

The wave on oscillograph can be found on the following link:

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Thanks in advance!

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X.Y.
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Well, I'm lurking while people are helpful with my UL testing post, but I just know I'm going to regret helping with this.

I assume that OOK is on-off keying or somesuch.

I would venture that whatever is producing the signal is being slightly overdriven, given the possible clipping on the negative peaks.

Rectifier, preferably full wave Smoothing/lowpass filter Schmitt trigger/threshold detector

Homework?

Richard Richard D.

Spamtrapped at ngsATradixDASHdesignDOTcoDOTuk

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Richard Dungan

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