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What's the definition of noise bandwidth?

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nayaki3004

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can anybody immediately reply me the answer for noise bandwidth
 

sourour

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Re: communication

Since any communication system has a front end filter. The noise bandwidth of interest is the bandwidth of this filter.
 

mahdithdn

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communication

in communication cources:
white noise is supposed to be unlimited but in practice it damp affter 500GHz
 

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Re: communication

NOISE BANDWIDTH (NBW)
More accurately: equivalent noise bandwidth. Describes the equivalent bandwidth of a filter for broadband (white) noise and is the bandwidth of a rectangular characteristic filter having the same power transfer function as the selection filter (same area under the curve). The relationship between NBW and the resolution bandwidth (RBW) of a Gaussian filter is approximately:

NBW = 1.2 x RBW
 

    nayaki3004

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