【摘 要】
：
Wireless Sensor Networks (WSN) are mainly characterized by a potentially large number of distributcd sensor nodes which collectively transmit information about
【机 构】
：
Key Lab of Broadband Wireless Communication and Sensor Network Technology,National Mobile Communicat
【基金项目】
：
the open research fund of National Mobile Communications Research Laboratory,Southeast University;the Postdoctoral Science Foundation of Jiangsu Province;国家自然科学基金;国家重点基础研究发展规划(973计划);the Basic Researc
论文部分内容阅读
Wireless Sensor Networks (WSN) are mainly characterized by a potentially large number of distributcd sensor nodes which collectively transmit information about sensed events to the sink.In this paper,we present a Distributed Wavelet Basis Generation (DWBG) algorithm performing at the sink to obtain the distributed wavelet basis in WSN.And on this basis,a Wavelet Transform-based Distributed Compressed Sensing (WTDCS) algorithm is proposed to compress and reconstruct the sensed data with spatial correlation.Finally,we make a detailed analysis of relationship between reconstruction performance and WTDCS algorithm parameters such as the compression ratio,the channel Signal-to-Noise Ratio (SNR),the observation noise power and the correlation decay parameter by simulation.The simulation results show that WTDCS can achieve high performance in terms of energy and reconstruction accuracy,as compared to the conventional distributed wavelet transform algorithm.
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