Thursday, 3 May 2012

Aliasing....

A wave diagram showing Aliasing

When a continuous time band limitted signal is sampled at a rate lower than Nyquist rate fs < 2fm then the successive cycles of the spectrum G(w) of the sampled signal g(t) overlap each other ,this is known as aliasing. In fact, aliasing is the phenomenon in which high frequency component in the frequency spectrum of the signal takes