I know there is the JTossim tool which can provide a topology with the linkgain and visualize and simulate it. But how to make it in the other side, I mean given a topology (nodes position and linhkgain ) how we can visualize it ?
Im not getting your question clearly, Im answering to ur question as what i understood.There are many simulation tools to visualize and to perform simulation .
Some of the Simulation tools to visualize a topology are mininet cum miniEDIT, OMNeT++ these are the open source simulation software. And the commercially available simulation software are OPNET,QualNet .
By using the all above software yo can build a topology and you can analyze the required parameter
I believe there is several extensions to TOSSIM. For example, TinyViz is a visualization tool you can try out. There are other extensions as well, such as PowerTOSSIM, which is an extension for energy consumption modeling.
thanks for the update - I was working with TOSSIM few years back, and we used TinyViz. You are correct, it is obsolete now. Thanks for the new solution.