Abstract
针对无线传感器网络(WSN)网络生命周期问题，将分布式信源编码(DSC)引入到WSN中，结合低复杂度剩余能量最优分簇算法，实现了最大化生命周期的最优WSN网络仿真设计分析。首先直接采用剩余能量比对分簇算法的阈值进行修订，然后簇头采用DSC对其分簇中节点数据进行压缩汇集再传输到基站。试验结果表明，剩余能量感知及DSC的引入有效均衡了网络负载，降低簇头传输功耗，提高了WSN的生命周期。 In order to prolong the life time of Wireless Sensor Network (WSN), Distributed Source Coding (DSC) and residual energy awareness have been introduced into WSN. The threshold for deciding the cluster head has been modified by additional awareness of residual energy ratio. Then the cluster head aggregates the nodes’ data in current cluster using DSC, and transmit DSC data to sink. Experimental results have shown the introduction of both residual energy awareness and DSC have effectively balanced the load of the network, reduced the energy consumption of cluster head, upon which the WSN’s lifetime increased.
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