南昌大学学报(理科版)
南昌大學學報(理科版)
남창대학학보(이과판)
JOURNAL OF NANCHANG UNIVERSITY(NATURAL SCIENCE)
2009年
3期
302-306
,共5页
无线传感器网络%成簇算法%能量有效%时空分集
無線傳感器網絡%成簇算法%能量有效%時空分集
무선전감기망락%성족산법%능량유효%시공분집
wireless sensor network%clustering algorithm%energy-efficient%space-time diversity
为了延长无线传感器网络的生存时间,需要设计适合无线传感器网络特点的能量有效的协议.成簇算法能够减少无线传感器网络的能量消耗,对增强网络的可扩展性和延长网络的生存时间有着重要的作用.现有的算法对多路衰退的链路并不十分能量有效,针对这些算法的不足,提出了一种基于时空的分布式能量有效成簇算法.每个簇由一个簇首节点和一个协作节点相互合作,运用时空编码实现数据传输的时空分集,以减少网络能耗和均衡节点能量.模拟实验结果显示,与现有重要成簇算法相比,该算法能够提供更长的网络生存时间.
為瞭延長無線傳感器網絡的生存時間,需要設計適閤無線傳感器網絡特點的能量有效的協議.成簇算法能夠減少無線傳感器網絡的能量消耗,對增彊網絡的可擴展性和延長網絡的生存時間有著重要的作用.現有的算法對多路衰退的鏈路併不十分能量有效,針對這些算法的不足,提齣瞭一種基于時空的分佈式能量有效成簇算法.每箇簇由一箇簇首節點和一箇協作節點相互閤作,運用時空編碼實現數據傳輸的時空分集,以減少網絡能耗和均衡節點能量.模擬實驗結果顯示,與現有重要成簇算法相比,該算法能夠提供更長的網絡生存時間.
위료연장무선전감기망락적생존시간,수요설계괄합무선전감기망락특점적능량유효적협의.성족산법능구감소무선전감기망락적능량소모,대증강망락적가확전성화연장망락적생존시간유착중요적작용.현유적산법대다로쇠퇴적련로병불십분능량유효,침대저사산법적불족,제출료일충기우시공적분포식능량유효성족산법.매개족유일개족수절점화일개협작절점상호합작,운용시공편마실현수거전수적시공분집,이감소망락능모화균형절점능량.모의실험결과현시,여현유중요성족산법상비,해산법능구제공경장적망락생존시간.
In order to prolong the lifetime of network,it is necessary to design an energy-efficient protocol according to the characteristics of wireless sensor network.Clustering algorithm can reduce the energy consumption of wireless sensor networks.It provides good performance for the network scalability and helps great in prolonging network lifetime.The existing algorithms are not energy-efficient enough for the channel suffered from multi-path fading.This paper proposes a distributed energy-efficient clustering algorithm based on space-time diversity.In each clustering,there are one cluster head and one cooperative node.They provide space-time diversity for the data transmission which would reduces the energy consumption of the network and balance the energy of the nodes.The experiment results show that algorithm provides lifetime of the network than current clustering algorithms.