A simulation model for a centralized multihop packet radio network

This paper presents the simulation model of a centralized multihop packet radio network, which operates under a non-persistent CSMA channel access protocol. Data extracted from the simulations are analyzed to find the optimum transmission radii of units that, maximizes the single hop packet progress, while minimizing the interference created by the hidden terminals. The solution is obtained considering the limitations introduced by the usage of this network in a real-time flash-flood prediction system. These limitations include the allocation of a single radio channel for carrying both information and acknowledgment traffic; and the selection of the shortest route to carry information from source to destination. Conclusions are drawn by matching the results with those obtained from a previously performed mathematical analysis of the same network.