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A fully integrated LC voltage controlled oscillator (VCO) with 1V low voltage supply, applied in the frequency synthesizer of 2.4GHz IEEE802.15.4/ZigBee Wireless Sensor Network (WSN), is designed and implemented based on TSMC 0.18µm RF/MS CMOS process with low power dissipation and excellent phase noise performance. The possible structures under 1V voltage supply are compared and this paper uses PMOS...
he usage of random linear network coding in wireless sensor network is consistent with sociality, for this feature, proposed a network coding scheme for sociality for wireless sensor networks. Analyzed the process of coding and decoding of random linear network coding and summarized the advantages and disadvantages of the scheme in practical application, at last through NS2 to compare the scheme of...
This paper presents a new key management protocol of wireless sensor network based on NTRU public key cryptosystem, which includes node authentication using the NTUR digital signature and showing an implementation process of establishing encryption key between nodes, adding a new node, and eliminating the invalid nodes. This paper also analyzes the security of the protocol, the storage overhead, communication...
With the development of the Wireless Sensor Network (WSN), the number of sensor nodes in WSN is so large while one single node's resource is quite limited. One of the key goals of designing routing protocol of WSN is to reduce the energy consumption and maximize the networks' overall survival time. ICCA presents one cluster heads choosing algorithm based on the Low-Energy Adaptive Clustering Hierarchy...
The open access and limited resources of WSNs make the network vulnerable to all kinds of attacks, and for this reason it requires effective intrusion detection technology to detect and identify various security threat. This paper firstly gives a brief introduction of the present intrusion detection system, and then discusses the various threats faced of WSNs, at last this paper points out that the...
According to wireless sensor network (WSN) nodes have unstable performance and are easy to lose effectiveness, a WSN routing failure node verification method, NEVM (Node-Encoding Verification Method), based on node encoding is proposed. The method encodes failure route node with binary encoding and generates more verification path, then sends verification packages to each path and generates a sequence...
Accurate and efficient clock synchronization algorithm is very important in Wireless Sensor Network (WSN). The existing researches focus on exploring communication delay impact on clock synchronization in wireless sensor network. Considering the physical characteristics of the sensor itself, an adaptive clock synchronization method based on Expectation-Maximization (EM) algorithm is proposed. A general...
The essay proposed a new calculating method of distance to solve some problems of DV-Hop positioning algorithm when used to compute the distance of unknown nodes to anchor nodes in the wireless sensor network. The algorithm involved the effect of the angle formed by three consecutive nodes in the path of unknown nodes to anchor nodes, on distance, so the distance can be calculated more accurately...
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