The impact of hidden node on model of ad hoc network

To deal with hidden nodes in ad hoc network, we take throughput as the metric to evaluate the perfonnance of network. Firsdy, we modeled the MAC layer of ad hoc network based on 802. 11 DCF without the existence of hidden nodes. By means of the proposed model, we evaluated the throughput performance of DCF in multi-hop wireless networks. Secondly, we performed simulations to validate this model. The outcome of comparison is that there exists much difference in throughput between the model and the simulation. For reducing this difference, we modified the model by involving hidden nodes under the condition that the AODV route protocol was chosen, and analytically analyzed the influence of hidden nodes on theoretical throughput. At last,we validated the accuracy of this model by comparing the analytical results with simulation results.