Hi,

https://yafs.readthedocs.io/en/latest/

I think there are also some useful websites.

Let me put a word of caution about using readymade simulators. First find out whether it can answer the questions which you wish to answer. It will take you some time to understand the usage of readymade simulators. But remember, they all make assumptions. Good luck. In this case, there seem to be many documents and IEEE papers.

Dear Aarti Rani

Have a look:

https://github.com/acsicuib/YAFS

Kind Regards

Qamar Ul Islam