product with Arduino and a kind of VirtualWire library, but must be multi-communicate as multiple instantiation (many transmitters and many receivers on the same Arduono board).
pls let me know what are the technologies and requirement needed for this
What do you want to use this 'product' for?
Are you hoping to find a ready-made solution or are you planning to construct it yourself?
I have built a system for radio-control of model trains but I don't use the virtual wire library.
...R
Yes, the OPs question makes no sense at all.
What are you trying to do?
many transmitters and many receivers on the same Arduono board).
not to mention that the word "many" is vague to say the least.