Do I need to turn on an option or options to allow resistor, which is modelled by the ahdl code, to generate noise in noise simuation in ADE environment?
I just simply injecting a current from an ideal current source to that ahdl modelled resistor but I cannot get any 4KTR noise.
I did try to replace that resistor by an resistor from analogLib and run noise sim, I can successfully get the 4KTR noise.
You'd need to use the white_noise function in VerilogA to do this. Look at the Verilog-A Language Reference manual and search through for white_noise - where it's described there's even an example of how you'd code the 4KTR noise.