Scientific Research Publishing

Read  full  paper  at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=53573#.VMnXqSzQrzE Author(s)   Liang Zhang 1 , Xinnian Li 1 , Honghuan Zhu 1 , Jongwon Kim 2 Affiliation(s) 1 School of Mechanical, Electrical & Information Engineering, Shandong University, Weihai, China . 2 School of Electrical, Electronics & Communication Engineering, Korea University of Technology and Education, Chonan, Korea . ABSTRACT The research on positioning system and spatial alignment is a big topic. In this paper, we proposed a design (that) studies two issues. One is the study of range positioning algorithm based on ZigBee communication system. The other one is spatial alignment platform which is controlled with two servos. Hardware and software control system was realized, which also consists of two parts, ZigBee network positioning system and automatic orientation platform. KEYWORDS ZigBee , Wireless Sensor Network , 3D Space Positioning , ...

Read  full  paper  at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=52983#.VK8z8snQrzE Author(s)   Keyur Parmar , Devesh C. Jinwala Affiliation(s) Department of Computer Engineering, S. V. National Institute of Technology, Surat, India . ABSTRACT In wireless sensor networks, secure data aggregation protocols target the two major objectives, namely, security and en route aggregation. Although en route aggregation of reverse multi-cast traffic improves energy efficiency, it becomes a hindrance to end-to-end security. Concealed data aggregation protocols aim to preserve the end-to-end privacy of sensor readings while performing en route aggregation. However, the use of inherently malleable privacy homomorphism makes these protocols vulnerable to active attackers. In this paper, we propose an integrity and privacy preserving end-to-end secure data aggregation protocol. We use symmetric key-based homomorphic primitives to prov...

Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=50911#.VFB8qFfHRK0 Author(s) Yunfeng Nie , Chongyi Chen , Changsheng Wang Affiliation(s) School of Information and Engineering, Nanchang Hangkong University, Nanchang, China . ABSTRACT Radio coverage directly affects the network connectivity, which is the foundational issue to ensure the normal operation of the network. Many efforts have been made to estimate the radio coverage of sensor nodes. The existing approaches (often RSSI measurement-based), however, suffer from heavy measurement cost and are not well suitable for the large-scale densely deployed WSNs. NRC-Map, a novel algorithm is put forward for sensor nodes radio cov...

Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=49037#.VDYbgVfHRK0 Author(s)     Shaik Sahil Babu , Arnab Raha , Mrinal Kanti Naskar Affiliation(s) Department of Electronics and Telecommunication Engg., Jadavpur University, Kolkata, India . School of Electrical and Computer Engineering, Purdue University, West Lafayette, USA . Department of Electronics and Telecommunication Engg., Jadavpur University, Kolkata, India . ABSTRACT In Wireless Sensor Networks (WSNs), the traditional cryptographic mechanisms for security require higher consumption of resources such as large memory, high processing speed and communication bandwidth. Also, they cannot detect faulty, malicious and selfish nodes which lead...