水声通信网络设计与OPNET平台下仿真  

Design of Underwater Acoustic Communication Network and Simulation Based on OPNET platform

作　　者：程荣涛[1] 

机构地区：[1]海军驻武汉四三八厂军事代表室,武汉430060

出　　处：《自动化与仪器仪表》2014年第6期173-176,共4页Automation & Instrumentation

摘　　要：水声通信网络是当代海洋研究、海洋资源勘探和开发、海洋环境立体监测、地震海啸监测和战术监测等水下系统无线信息传输的主要手段,但其性能受水声信道特性影响严重。采用OPNET对水声通信网络节点模型与分层协议进行设计与实现,包括基于MC-CDMA的多用户检测以及基本CSMA/CA机制的信道握手流程与网络分配向量(NAV)帧冲突处理机制等。同时建立并测试了一个包含1个主节点与4个传感器节点的水声通信网络,仿真结果表明设计的水声通信网络能够更好的克服冲突,减少数据包重发,从而获得更高水声通信网络的吞吐量,减少端对端传输延时与能量消耗。Underwater acoustic communication network for the exploration and development of marine re-sources, marine environment monitoring, and assisted navigation, tactical monitoring of underwater wireless information transmission means, but its performance is seriously affected by the underwater acoustic channel characteristics. Underwater acoustic communication network node model and layered protocol had been de-signed and implemented with OPNET software, including frame-based multi-user detection in MC-CDMA and CSMA/CA mechanism, the channel handshake process and the network allocation vector （NAV） conflict man-agement mechanism. At the same time to create and test an underwater acoustic communication network in-cludes a master node and four sensor nodes, the simulation results show that the design of underwater acoustic communication networks are better able to overcome the conflict, to reduce packet retransmission, resulting in higher underwater acoustic communication network throughput, reduces end-to-end transmission delay and en-ergy consumption.

关 键 词：水声通信网络 多载波码分多址 载波监听多址接入 多用户检测 

分 类 号：TN929.3[电子电信—通信与信息系统]