https://au.mathworks.com/help/satcom/ref/dsocpoissonchannel-system-object.html
dsocPoissonChannel - Create a deep space optical communications Poisson channel - MATLAB
The dsocPoissonChannel System object adds Poisson distributed noise to a signal through a deep space optical communications (DSOC) Poisson channel.
deep spaceoptical communicationscreatepoissonchannel