摘要
在水声信道长时延扩展、强多径干扰、强烈随机时-空-频变等恶劣传输条件下设计水声传感器网络多址协议是一项挑战性极大的任务.本文对ALOHA多址协议下水声传感器网络的性能进行仿真研究,首先利用网络仿真软件Opnet建立了ALOHA水声传感器网络模型,并分析了节点数目、数据包产生的平均间隔、数据包帧长等网络参数对网络性能的影响.仿真实验结果表明:根据负载、节点数等网络参数对数据包帧长进行适当设置,将可优化ALOHA网络的吞吐性能.
Due to hostile propagation characteristics of the underwater acoustic channels such as large propagation delay, serious multi-path interference and intensive space-time-frequency variation, design of the multlple-access protocol of underwater acoustic sensor network is a challenging task. The goal of this paper is to carry out simulation research on the underwater acoustic sensor network with ALOHA multiple-access protocol. The Opnet network simulation software is adopted to build ALOHA underwater acoustic sensor network which consisting of 4 or 8 sensor nodes and 1 central receiver node. The relationship between the network performance and the parameters such as the size of data packet,the average time interval of data generation as well as the distance between the sensor node and receive node is investigated with the simulated experimental data, indicating that the throughput performance can be optimized via suitable selection of the network parameters aforementioned.
出处
《厦门大学学报（自然科学版）》
CAS
CSCD
北大核心
2007年第A01期22-24,48,共4页
Journal of Xiamen University：Natural Science
基金
福建省自然科学基金(D0610019)
厦门大学海洋与环境学院"海洋学生科研奖励计划"资助
