摘要：
针对无线传感器网络节点能量受限及传感数据在时间与空间方向上都存在冗余的问题，基于5/3整数小波方法，提出分布式时空数据压缩算法以及参数包复制策略。仿真实验结果表明，与提升格式的小波方法相比，该方法不但减少时间与空间方向上的数据量，同时延长1/4左右网络生命周期。
关键词:
无线传感器网络,
小波变换,
数据压缩,
网络寿命
Abstract:
Aiming at the problem of the limited power of sensor and redundancy of sensor data, this paper proposes a distributed space-time wavelet transform method which is based on the 5/3 integer wavelet and a package duplication strategy. Simulation experimental results show that the proposed method effectively reduces amount of data on the time and space orientation, and extends the network life by one-quarter compared with wavelet compression method using lifting.
Key words:
WSNs,
wavelet transform,
data compression,
network life
中图分类号:
王英杰, 鞠时光, 阴晓加. 无线传感器网络中分布式数据压缩方法[J]. 计算机工程, 2010, 36(18): 88-90.
WANG Yang-Jie, JU Shi-Guang, LIN Xiao-Jia. Distributed Data Compression Method in Wireless Sensor Networks[J]. Computer Engineering, 2010, 36(18): 88-90.