Home › Forums › SYSTEM › Constellation Diagram for Duobinary › Reply To: Constellation Diagram for Duobinary
April 15, 2014 at 2:57 pm
#10531
I attached an example to get the constellation diagram for a Duobinary signal.
To get a constellation diagram, we need both amplitude and phase information of the signal. The optical receiver can only get the amplitude information. Therefore, we need to use coherent receiver to get both the amplitude and phase information. The coherent receiver has no relationship to the modulation format, but in a future release there will be a universal coherent receiver. For now, in the attached example, I used a QPSK coherent receiver.
Categories
- All
-
Knowledge
Contains a detailed Q&A knowledge base. -
General
All non-technical questions. -
System
Optical system design and analysis. -
Instrument
Communicate and control different kinds of instruments. -
SPICE
Opto-electronic circuit design. -
FDTD
Finite-Difference Time-Domain simulation. -
BPM
Beam Propagation Method analysis and design. -
Grating
Fiber optic grating simulation. -
Fiber
Optical fiber design and characterization. -
Exchange
Users can exchange design files.
(Matlab, C++, etc.)