水下声无线传感器网络通信性能研究

Study of communication performance in underwater acoustic sensor networks

在基于水下网络节点均匀分布的前提下,通过结合传输衰减和射线模型仿真水下通信信道,推导得出水下传感器网络路由中端到端平均误码率(BER)和网络节点分布密度之间的关系式。并且通过Monte Carlo仿真方法,单跳链路之间采用MFSK通信方式,仿真了网络通信性能与节点分布密度的关系。通过仿真结果,可以预测水下网络在特定网络拓扑结构中网络整体的通信能力;而且能够在预先给定要达到的网络通信能力的约束下,得到最优的网络分布密度;这将为水下网络节点布放的同时衡量网络通信性能提供很好的参考价值。

In this paper, the study on the relation between the communication performance and node distributed density in Underwater Sensor Networks （USN） was presented. The method combined the models of transmitting loss and ray of underwater acoustics to deduce the relationship between communication performance and node distributed density in USN. Moreover, the conclusion was simulated by Monte Carlo methods. By the result of simulation, the communication ability of underwater network can be forecasted on the given node deployment, furthermore the optimum net density will be found with the constraint of the given communication ability of underwater network, which affords benefit for the topology and node deployment based on the communication performance in underwater sensor networks.