文档介绍:Research of wireless sensor network routing
algorithm based on complex network theory
Thesis Submitted to Nanjing University of Posts and
Telecommunications for the Degree of
Master of Engineering
By
Fan Yang
Supervisor: Prof. You-hong Wan
February 2013
摘要
无线传感器网络由大量传感器节点组成,这些传感器节点能够实时感知并采集指定区
域内的数据和信息,并传送给终端用户,实现人与物理世界之间的通信与信息交互。由于
传感器节点的能量有限,且无法更换电源,所以随着无线传感器网络技术的逐步发展,延
长无线传感器网络的生命周期以及提高传感器节点的工作效率成为进一步的探索和研究
的重点。
首先根据复杂网络中小世界模型的特性,对无线传感器网络进行拓扑优化,使网络在
平均路径长度变化不大的情况下提高网络的聚类系数,使簇群结构更加明显。在此基础上,
对 LEACH 算法选出的簇首节点,综合比较节点的剩余能量、距离汇聚节点的距离和邻近
节点度,选出最合适的簇首节点。仿真表明该方法可以降低节点的能耗,延长网络的生命
周期。
其次,由于经典 LEACH 路由协议会导致簇首节点分布不均匀,影响网络负载平衡,
因此将复杂网络中的社团结构引入,对无线传感器网络进行拓扑优化,删除社团间的部分
连接,并采用多跳路由策略完成簇首节点与汇聚节点间的通信。仿真表明该算法要明显优
于经典 LEACH 算法。
最后,将无线传感器网络分簇路由算法与压缩感知理论相结合进行目标源的定位研
究。将改进的梯度投影重构算法用于目标源信号的定位,并与其他定位方法进行比较分析,
体现了该算法在定位精度和抗干扰性上的优势。
关键词: 复杂网络,无线传感器网络,路由协议,压缩感知
I
Abstract
Wireless sensor networks through the hundreds of sensor nodes, the nodes have the function
of sensing and collecting information of monitored areas timely, the information can be sent to
the end user to realize the sensing of the physical world and the communication between human
and the physical world. Usually, sensor node uses battery which has limited capacity, and can't
be replaced, so how to prolong wireless sensor network's lifetime and how to improve the
efficiency of sensor nodes attract the attention of the researchers.
First, the paper introduces Wireless sensor network topology optimization with the
characteristics of small world in complex network, which makes the average path l