| 环Z/2n上仿射函数Walsh谱的快速算法 |
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| 引用本文： | 邓瀚林,李磊,黄河清,袁晓兵,王营冠.环Z/2n上仿射函数Walsh谱的快速算法[J].上海交通大学学报,2011,45(3):321-0326. |
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| 作者姓名： | 邓瀚林 李磊 黄河清 袁晓兵 王营冠 |
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| 作者单位： | (信息工程大学 电子技术学院， 郑州 450004) |
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| 基金项目： | 中国科学院知识创新工程项目(KZCX1-YW-14-4-1) |
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| 摘 要： | 通过研究环Z/2n上仿射函数进位函数的性质，首先给出了一个计算环Z/2n上仿射函数Walsh谱的快速算法，进而给出了环Z/2n上多输出仿射函数Walsh谱的快速算法.实验表明，该算法可以将环Z/2n上仿射函数Walsh谱的计算复杂度由关于变量规模n的指数时间降为线性时间.
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| 关 键 词： | 模2n剩余类环 偏差 Walsh谱 线性密码分析 |
| 收稿时间： | 2010-03-19 |
Energy Consumption Analysis and Improvement Strategy for Cluster-Head Rotation in Wireless Sensor Networks |
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| DENG Han-lin,LI Lei,HUANG He-qing,YUAN Xiao-bing,WANG Ying-guan.Energy Consumption Analysis and Improvement Strategy for Cluster-Head Rotation in Wireless Sensor Networks[J].Journal of Shanghai Jiaotong University,2011,45(3):321-0326. |
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| Authors: | DENG Han-lin LI Lei HUANG He-qing YUAN Xiao-bing WANG Ying-guan |
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| Institution: | (Institute of Electronic Technology, Information Engineering University, Zhengzhou 450004, China) |
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| Abstract: | To design a more energy-efficient cluster head rotation(CHR) strategy for wireless sensor networks,this paper built an analytical model for the energy consumption of contention-based CHR,analyzed the energy consumption ratio between data gathering and CHR,and proposed a schedule-based CHR,which could remove the energy consumption in CHR.The simulation results show that the schedule-based CHR obviously improves energy efficiency and energy consumption balance in the cluster. |
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| Keywords: | wireless sensor networks clustering cluster-head rotation(CHR) energy efficiency |
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