How do I detect that a signal is a WIFI signal and not noise

[tch77_pt75]

I am able to view the RF spectrum currently but how do I differentiate between a WIFI and noise signal?

 

[vfone]

Re: How do I detect that a signal is a WIFI signal and not n

WIFI looks like this:

http://cp.home.agilent.com/upload/cmc_upload/80211g_spectrum.jpg



and noise looks like...noise

**broken link removed**

 

[tch77_pt75]

Re: How do I detect that a signal is a WIFI signal and not n

If I have WIFI signal and noise transmit in the air, what will their results be when I performed the demodulation?

Also, how do their constellation plot look like?