水下声学无线传感器网络的设计和性能分析

Design and performance analysis of underwater acoustic wireless sensor networks

为了分析水下声学无线传感器网络在受到干扰情况下的性能,介绍了影响网络性能的相关干扰因素,设计了物理层水声通信干扰模型,建立了基于频率相关的路径损耗和Ricean衰减的信道模型,研究了可作为网络连通标志的覆盖范围、端到端帧误差概率、功率和带宽需求之间的关系,分析了节点受同层其他节点通信干扰下的网络性能。通过仿真实验验证了所设计模型的可行性。实验数据表明,通过优化通信工作功率和节点密度,能够确保网络正常运行,提高网络的可靠性。

To analyze the performance of underwater acoustic wireless sensor networks （ UAWSNs） in the presence of interference. The related interference factors affecting network performance were introduced. The acoustic com-munication interference model in physical level of UAWSNs was designed. Based on frequency dependent path loss and Ricean fading the channel model was built. The relationship among the coverage, end-to-end frame error prob-ability, power and bandwidth requirements to be used as the network connected logo was researched. The UAWSNs performance under the interference between nodes was analyzed. The feasibility of the design model was validated by simulation experiments. The experimental results show that the priority transmission power and nodes density can ensure normal operation of the network, and improve the reliability of the network.