Howtosignalprocessing
- What means band-limited?
- What is band limit?
- Why are signals band-limited?
- What is band-limited channels?
What means band-limited?
A signal is said to be band-limited if the amplitude of its spectrum goes to zero for all frequencies beyond some threshold called the cutoff frequency.
What is band limit?
bandlimit (plural bandlimits) (physics) The limiting frequency of a signal beyond which the intensity of the signal is zero quotations ▼
Why are signals band-limited?
A signal is called bandwidth – limited or simply band-limited when the amplitude of the spectrum goes to zero whenever its frequency crosses the allowable limits. Thus, its Fourier transform is non-zero only for a finite frequency interval. A band-limited signal is represented by a finite number of harmonics.
What is band-limited channels?
band-limited channel A transmission channel with defined finite bandwidth. All physically realizable channels are band-limited by the constraints of the transmission medium and the drivers and receivers. The bandwidth may be deliberately constrained by filtering to limit the emission of or susceptibility to EMI.
