水声网络中的跨层设计研究

跨层设计是水声网络中急需解决的关键技术之一。对于能量和可用频带严重受限的水声网络系统,跨层设计能有效地利用海洋声信道环境下稀少的可用资源,克服分层网络设计中非最优和不灵活的缺点,使系统运行在最佳模式下。在介绍国内外水声网络跨层设计研究的基础上,提出了一种基于控制通道和数据通道的双通道水声网络跨层设计模型,分析了该跨层网络模型的优势,并给出一种自适应节点调制和编码的双通道水声网络跨层模型应用方案,在水池和厦门海域中进行了多节点自组织组网实验,验证了该方案的可行性,表明双通道跨层模型在水声网络设计中具有良好的应用前景。

Research on the cross-layer design of underwater acoustic networks

Cross-layer design is one of the most significant and urgently needed techniques for Underwater Acoustic Networks （UWANs）. For the energy and bandwidth severely limited UWANs system, cross-layer design can effectively utilize the scarce resources in such special environment as underwater acoustic channels, overcome the disadvantages of the non-optimum and the inflexibility of the traditional layering network design, and optimize the functionality of the system. In this paper, we introduce recent advances in the cross-layer design of UWANs, propose a kind of dual-channel （a control channel and a data channel） cross-layer design for UWANs and analyze the advantages of our dual-channel cross-layer model. Based on the dual-channel cross-layer model, the paper provides an adaptive modulation and coding with practical applications. Some multiple-node self-organized networking experiments are conducted in the water pool and Xiamen waters. Promising experimental results are obtained and show that dual-channel cross-layer model could offer diverse applications in underwater acoustic networks in the future.