Hi Sreevani,
I suggest you to start with one example of OWC in our library with laser source and reasonable free space length.
then modify the it step by step using MSK technique.
let me be specific with you
1. attached is an example of OWC that you can start with
2. for MSK: there are two components for “MSK Pulse Generator” and “Electric MSK Modulator”
hope this helps,
thanks
Mohamed Abouseif