Hi,
first and foremost, use less question marks. One is more than enough.
Second, CDMA is a term to indicate a way to transit signals over the air and arbitrate between different users. It does NOT name a technology. E.g., UMTS can use CDMA (LTE doesn't). Naming LTE and CDMA in the same sentence is like saying "I have a Diesel engine and a Ford Lexus".
Third, MANET protocols are multi-hop. CDMA is used (mainly) in cellular communication systems, which are 1-hop. LTE is a cellular technology too, and it is 1-hop. The standard bodies are just started to think (let alone produce some documents) about multi-hop LTE and only for some extremely specific cases.
Now, your question is: "Please let me know if it not possible to simulate CDMA and LTE networks."
The problem is: what you ask does not make any possible sense. It is not a ns-3 limitation, the problem is that you asked "I have an apple and a screwdriver. My friend told me that tomorrow is her birthday. Should I use a raincoat or an umbrella?".
I guess that this could be a simple case of misunderstanding. As a consequence, mind if I ask to explain your questions a bit better next time ?
Thanks,
T.