wwfhm2002
Member level 5
data slicer
We using FM PLL demodulator with a data slicer as FSK demodulator, my question is what is it a coherent demodulator or non-coherent demodulator?
And FSK demodulator has two another method:
1: general band pass filter and envelope comparator
2: match filter BPF and envelope comparator
What 's 1 and 2 coherent demodualtor or non-coherent demodulator?
My understanding is PLL demodulator and 2 is coherent demodualtor because they will align the LO phase with incoming signal, and 1 is non-coherent demodulator. But some paper give different answer.
We using FM PLL demodulator with a data slicer as FSK demodulator, my question is what is it a coherent demodulator or non-coherent demodulator?
And FSK demodulator has two another method:
1: general band pass filter and envelope comparator
2: match filter BPF and envelope comparator
What 's 1 and 2 coherent demodualtor or non-coherent demodulator?
My understanding is PLL demodulator and 2 is coherent demodualtor because they will align the LO phase with incoming signal, and 1 is non-coherent demodulator. But some paper give different answer.