Howtosignalprocessing
- What is a coherent detection?
- What is meant by coherent and non-coherent detection?
- What is synchronous or coherent detection?
- What is coherent detection of PSK?
What is a coherent detection?
Coherent detection originates from radio communications, where a local carrier mixes with the received radio frequency (RF) signal to generate a product term. As a result, the received RF signal can be frequency translated and demodulated.
What is meant by coherent and non-coherent detection?
Non-coherent means optical transmission system does not require coherent local oscillator light; Coherent means optical transmission system that uses local oscillator light for coherent detection.
What is synchronous or coherent detection?
The procedure of using a reference waveform in a radar receiver that is exactly synchronized with the carrier frequency. Specifically, a coherent local oscillator provides a reference signal that is mixed with the incoming signals to recover the amplitudes and phases of the echoes.
What is coherent detection of PSK?
Power spectra. Use to determine the signal bandwidth and co-channel interference in multiplexed systems. In practice, the signalings are linear operation, therefore, it is sufficient to evaluate the baseband power spectral density. B.
