How to add RF Chain into NOMA?

I'm trying to run a simple noma communication with rf chains on it. Like i want to see it with 8 or 16 or others of rf chains and the code i found is only this one

Syntax #based on matlab 
rfobj = rfchain()
obj = rfchain(g, nf, o3, 'Name', nm)
obj = rfchain(g, nf, 'IIP3', i3, 'Name', nm)

how can i modified those code if i want to use some several numbers of rf chains? or maybe there are the others codes? thankyou!