Abstract:
Aiming at wavelet function with arbitrary supports, a distributed data compression algorithm based on chain topology is proposed. In this algorithm, the correlation among the data is eliminated before they are transmitting to the cluster head. A chain topology adaptive to wavelet transform is introduced. The position where the wavelet coefficients are stored and the corresponding chain are chosen. A data compression adaptive to wavelet function with arbitrary supports is proposed. From the point of energy consumption and data accuracy, experiment shows that the algorithm functions correctly.
Key words:
sensor network,
chain topology,
wavelet compression
摘要: 针对任意支撑长度的小波函数,提出一种基于链模型的分布式数据压缩算法,在数据传送到簇头前去除传感数据的相关性,避免冗余数据的传输。设计一个适合于小波变换的链模型,选择小波系数在链上存放的最佳传感器节点位置,确定进行分布式小波变换的链。基于此链给出一个适合任意支撑长度小波函数的分布式小波压缩算法。从网络耗能和数据重构精度的角度设计模拟实验,验证了算法具有较好的性能。
关键词:
传感器网络,
链模型,
小波压缩
CLC Number:
LUO Wen-Hua, WANG Ji-Liang. Distributed Wavelet Compression Algorithm Based on Chain Topology[J]. Computer Engineering, 2010, 36(16): 74-76.
罗文华, 王继良. 基于链模型的分布式小波压缩算法[J]. 计算机工程, 2010, 36(16): 74-76.