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研究在给定接收信噪比条件下协作多跳水声网络能量最小路径问题.考虑一个二维协作多跳网络模型,源节点和目的节点通过任意分布的中继节点及其附近的协作节点进行数据通信.建立了该网络的能量模型,并通过最优频率-距离关系的近似表达简化能量模型;在此基础上分析了可变发送功率模式下的能量最小路径,对节点间距和协作节点数量进行联合优化,从理论上证明了当各中继节点选取相同数量的协作节点,且中继节点按直线等距路径分布时网络总能耗最小,并给出了直线等距网络最优节点间距和最优协作节点数量的求解方法.仿真结果验证了该理论的正确性.
The problem of minimizing the energy of a multi-hop underwater acoustic network under a given receiving SNR is considered.When considering a two-dimensional cooperative multi-hop network model, the source node and the destination node conduct data through any distributed relay node and its nearby cooperating nodes The energy model of the network is established and the energy model is simplified by the approximate expression of the optimal frequency-distance relationship. Based on the analysis, the minimum energy path in variable transmission power mode is analyzed, and the node spacing and the number of cooperation nodes are analyzed In the joint optimization, it is theoretically proved that the total network energy consumption is the smallest when the relay nodes select the same number of cooperative nodes and the relay nodes are distributed in a straight-line isometric path, and the optimal node spacing and The solution of the optimal number of cooperative nodes is verified by simulation results.