CAJ | 학술논문

针对无线传感器网络采集数据存在的时空冗余,提出了一种自适应最优消零压缩算法(AOZS, adaptive op-timal zero suppression compression algorithm).AOZS是一种无损的数据压缩算法,能够自适应地寻找最优位数因子对递增排列的数据序列进行消零运算和编码,使得数据序列的最终编码长度最短.仿真结果表明,AOZS 算法能够对无线传感器网络采集的数据进行有效地压缩,降低了节点能耗,减小了网络延时,并且能精确地重构原始数据.
침대무선전감기망락채집수거존재적시공용여,제출료일충자괄응최우소령압축산법(AOZS, adaptive op-timal zero suppression compression algorithm).AOZS시일충무손적수거압축산법,능구자괄응지심조최우위수인자대체증배렬적수거서렬진행소령운산화편마,사득수거서렬적최종편마장도최단.방진결과표명,AOZS 산법능구대무선전감기망락채집적수거진행유효지압축,강저료절점능모,감소료망락연시,병차능정학지중구원시수거.
Considering the temporal and spatial redundancy in wireless sensor network(WSN), an adaptive optimal zero suppression data compression method (AOZS) was proposed. AOZS is a loss-less compression method, it aims to find an optimal digital factor to perform zero suppression and encode operation for a data sequence in ascending order, and therefore the final code length is the shortest based on this optimal digital factor. Simulation results show that AOZS can compress the data and decrease the energy consumption effectively, and reduce the network delay and prolong the life cycle of the network as a result.