Howtosignalprocessing
- What is an IQ demodulator?
- What is demodulation GIS?
- What is I and Q in IQ demodulator?
- What is the process of demodulation?
What is an IQ demodulator?
Concept of IQ-modulation and IQ-demodulation. An IQ-demodulator achieves perfect reconstruction of I(t) and Q(t) by exploiting the quadrature phase relation between sI(t) and sQ(t). The frequency-domain representation of a -90o phase shift corresponds to multiplication by the Hilbert transform: ..
What is demodulation GIS?
Demodulation is defined as extracting the original information-carrying signal from a modulated carrier wave. A demodulator is an electronic circuit that is mainly used to recover the information content from the modulated carrier wave.
What is I and Q in IQ demodulator?
In other words, I/Q demodulation is essentially translation: we are translating from a magnitude-plus-phase system (used by a typical baseband waveform) to a Cartesian system in which the I component is plotted on the x-axis and the Q component is plotted on the y-axis.
What is the process of demodulation?
The process of separating the original information or SIGNAL from the MODULATED CARRIER. In the case of AMPLITUDE or FREQUENCY MODULATION it involves a device, called a demodulator or detector, which produces a signal corresponding to the instantaneous changes in amplitude or frequency, respectively.
