Howtosignalprocessing
- What is quadrature sampling?
- What is time-domain representation of signal?
- What is quadrature signal?
- What do you understand a time-domain and frequency-domain representation of a signal?
What is quadrature sampling?
Quadrature-sampling is the process of digitizing a continuous (analog) bandpass signal and translating its spectrum to be centered at zero Hz. Let's see how this popular process works by thinking of a continuous bandpass signal, of bandwidth B, centered about a carrier frequency of fc Hz.
What is time-domain representation of signal?
Time domain representation – In frequency domain, a signal is represented by its frequency spectrum. To obtain frequency spectrum of a signal, Fourier series and Fourier transformation are used. Fourier series is used to get frequency spectrum of time-domain signal, when the signal is periodic function of time.
What is quadrature signal?
A quadrature signal is a two-dimensional signal whose value at some instant in time can be specified by a single complex number having two parts; what we call the real part and the imaginary part. (The words real and imaginary, although traditional, are unfortunate because of their meanings in our every day speech.
What do you understand a time-domain and frequency-domain representation of a signal?
As stated earlier, a time-domain graph displays the changes in a signal over a span of time, and frequency domain displays how much of the signal exists within a given frequency band concerning a range of frequencies.
