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Aug 31, 2015 at 15:02 history edited Peter K. CC BY-SA 3.0
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Aug 31, 2015 at 8:34 vote accept HappyBee
Aug 31, 2015 at 3:10 answer added JohnMarvin timeline score: 2
Aug 25, 2015 at 11:45 comment added Dilip Sarwate Physical channels themselves are relatively free of additive white Gaussian noise and most of the AWGN that is in mathematical models of channels arises from the thermal noise in the front end of the receiver. When you "define" a channel to have complex Gaussian coefficients, what you are modeling is the fading in the physical medium of the wireless channel (caused by ionospheric or tropospheric scatter or reflection off a non-specular surface such as the ocean), and the receiver noise must still be included separately.
Aug 25, 2015 at 11:06 history asked HappyBee CC BY-SA 3.0