Hi researchers, We create a network with 40 nodes which are placed every 50 meters. The first node sends Hello message every 1 second. After 1000,000 seconds, we have calculated the delivery ratio of each link from sender to all other nodes by dividing the number of received packet over 1000,000. The general graphs of graph is the same like using shadowing propagation model's formula in a analytical tool like Matlab or R. But the numbers are so different. For instance, in Matlab after 500 meters according to the shadowing model the delivery ratio is almost 0 while in ns-2 after 1000 meters it goes to 0. The parameter of model in ns-2 and matlab are exactly the same.
Can any one has an explanation of this?
