西安邮电大学学报
西安郵電大學學報
서안유전대학학보
Journal of Xi'an University of Posts and Telecommunications
2015年
5期
34-37,90
,共5页
王凡%卢光跃%弥寅
王凡%盧光躍%瀰寅
왕범%로광약%미인
无线传感器网络%恶意攻击%分布式%扩散最小均方%中值滤波
無線傳感器網絡%噁意攻擊%分佈式%擴散最小均方%中值濾波
무선전감기망락%악의공격%분포식%확산최소균방%중치려파
wireless sensor network%malicious attack%distributed%diffusion lms%median filtering
研究无线传感网潜在的恶意攻击节点对系统整体估计性能的影响,从节点选择的角度入手,改进原有扩散最小均方算法的融合步骤。针对接收到的相邻居节点估计值采用中值滤波处理,替代原来的融合方法,以降低恶意攻击节点对整个网络的影响。通过改变恶意节点攻击强度或恶意节点度,对改进算法进行仿真,结果显示全局均方偏差值有所降低,且改进算法对恶意节点攻击强度和恶意节点度的改变并不敏感。
研究無線傳感網潛在的噁意攻擊節點對繫統整體估計性能的影響,從節點選擇的角度入手,改進原有擴散最小均方算法的融閤步驟。針對接收到的相鄰居節點估計值採用中值濾波處理,替代原來的融閤方法,以降低噁意攻擊節點對整箇網絡的影響。通過改變噁意節點攻擊彊度或噁意節點度,對改進算法進行倣真,結果顯示全跼均方偏差值有所降低,且改進算法對噁意節點攻擊彊度和噁意節點度的改變併不敏感。
연구무선전감망잠재적악의공격절점대계통정체고계성능적영향,종절점선택적각도입수,개진원유확산최소균방산법적융합보취。침대접수도적상린거절점고계치채용중치려파처리,체대원래적융합방법,이강저악의공격절점대정개망락적영향。통과개변악의절점공격강도혹악의절점도,대개진산법진행방진,결과현시전국균방편차치유소강저,차개진산법대악의절점공격강도화악의절점도적개변병불민감。
To study the impact of malicious nodes on signal estimation performance for wireless sensor networks (WSN)in an untrustworthy environment,the diffusion least mean square (MF-DLMS)algorithm based on the median filtering mechanism is proposed from the perspective of the node selection.The existing fusion step of the diffusion least mean (DLMS)algorithm is therefore improved to reduce the impact of malicious attacks on the entire network,of which the estimated value received from neighbor nodes are processed by the median filtering. The improved algorithm is simulated with the change of the attack power and the degree of malicious nodes.Results show that the mean square deviation (MSD)curve is decreased,which means that the improved algorithm is insensitive to the attack power and the degree of malicious nodes.