In this paper we present a secure broadcast scheme for wireless sensor networks. The proposed scheme provides data confidentiality, data authentication, data integrity, and data freshness with low overhead and simple ...
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ISBN:
(纸本)9781424443093
In this paper we present a secure broadcast scheme for wireless sensor networks. The proposed scheme provides data confidentiality, data authentication, data integrity, and data freshness with low overhead and simple operation. Since it allows delayed and lost packets, the secure broadcast is supported. Furthermore, it eliminates the requirement of frequent key renewal to overcome a special limitation of the stream ciphers. Due to the simplicity, efficiency, and security, the proposed scheme is a competitive solution to provide secure broadcast in wireless sensor networks.
In this work, we present a double-gate (DG) ZnO thin-film transistor (TFT) featuring a top-gate (TG) and drain/source offset (L Off ) structure under double-gate operation. The study investigates the impact of varying...
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ISBN:
(数字)9798331521691
ISBN:
(纸本)9798331521707
In this work, we present a double-gate (DG) ZnO thin-film transistor (TFT) featuring a top-gate (TG) and drain/source offset (L Off ) structure under double-gate operation. The study investigates the impact of varying the offset between source/drain (S/D) and gate electrodes on the electrical performance of DG ZnO TFTs. The experimental details of the proposed DG ZnO TFTs are explained in detail. The channel conduction behavior across three proposed structural configurations: overlapping, aligned, and underlapping was analyzed using carrier concentration contour study. Performance comparisons of proposed device configurations are analyzed in terms of drain current (I D7 ) and threshold voltage (V th ). The overlapping configuration significantly enhances device performance, with a drain current of 2.04 mA/μm, which is 1.6 times higher than the drain current in the underlap configuration. The results of this study of this work indicate that DG ZnO TFTs with an overlapped design are suitable for high-performance applications in flexible electronics and sensing technologies.
An ultra-low power 2.4 GHz RF Wakeup Receiver is designed for wireless sensor networks nodes. The receiver demodulates On-Off Keying at 100 kbps. A 120 nm CMOS chip includes the analog front-end and consumes only 7.5 ...
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ISBN:
(纸本)9781424443093
An ultra-low power 2.4 GHz RF Wakeup Receiver is designed for wireless sensor networks nodes. The receiver demodulates On-Off Keying at 100 kbps. A 120 nm CMOS chip includes the analog front-end and consumes only 7.5 mu W from a single 1.5 V supply. The digital signal processing is implemented in an FPGA. The results of measures and simulations are evaluated for the use of this receiver in wireless sensor networks.
作者：
Lopes, LuísMartins, FranciscoSilva, Miguel S.Barros, JoãoLIACC
Departamento de Ciência de Computadores Universidade do Porto Portugal CITI
Departamento de Informática Universidade de Lisboa Portugal IT
Departamento de Ciência de Computadores Universidade do Porto Portugal
We present a process calculus that models the communication and computational aspects of sensor network applications. The calculus focuses on a basic set of primitives for programming sensor networks that support code...
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Many anticipated deployment scenarios, in particular military, healthcare, and disaster-recovery applications, of Wireless sensor Networks require reliable source to sink communication. In this paper, we introduce a n...
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ISBN:
(纸本)9781424443093
Many anticipated deployment scenarios, in particular military, healthcare, and disaster-recovery applications, of Wireless sensor Networks require reliable source to sink communication. In this paper, we introduce a novel reliable topology that uses hotlines between sensor gateways to enhance the reliability of end-to-end transmissions. These hotlines, reduce the number of average hops from source to the sink and serve as reliable and efficient backbone routing alternatives. We show analytically that communication using hotlines is noticeably more reliable than traditional Wireless sensor Networks routing.
An analytical model of surface acoustic wave (SAW) gas sensor with viscoelastic chemisensitive layer has been presented in the paper. The problem was formulated using Biot viscoelastic solid model with Maxwell 's ...
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This paper introduces our work on the communication stack of wireless sensor networks. We present the IPv6 approach for wireless sensor networks called 6LoWPAN in its IETF charter We then compare the different impleme...
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ISBN:
(纸本)9781424443093
This paper introduces our work on the communication stack of wireless sensor networks. We present the IPv6 approach for wireless sensor networks called 6LoWPAN in its IETF charter We then compare the different implementations of 6LAoWPAN subsets for several sensor nodes platforms. We present our approach for the 6LoWPAN implementation which aims to preserve the advantages of modularity while keeping a small memory footprint and a good efficiency.
This paper examines the system level power reduction of Wireless sensor Nodes in medical applications by the use of source and channel coding. The reliability and energy savings of the serially concatenated Huffman an...
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ISBN:
(纸本)9781424443093
This paper examines the system level power reduction of Wireless sensor Nodes in medical applications by the use of source and channel coding. The reliability and energy savings of the serially concatenated Huffman and Reed-Solomon codes is presented, and the scheme with regards to medical applications is discussed. The results show that it is possible to have BER and compression gains in the system, but also show that computational time of purely software oriented implementations are not optimal.
Wireless sensor Network devices have by nature limited available energy to perform a wide range of demanding tasks. In order to maximize their operation lifetime, optimal resource management is an important challenge ...
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ISBN:
(纸本)9780769533308
Wireless sensor Network devices have by nature limited available energy to perform a wide range of demanding tasks. In order to maximize their operation lifetime, optimal resource management is an important challenge and its success requires methodical modeling of the factors contributing to the overall power consumption. Moreover, the power consumed is not always useful on its own, but it should rather express the expected lifetime concerning the device's normal operation. To achieve such awareness, this paper contributes with a measuring methodology which involves combining power consumption of platform elementary functionalities with battery discharge characteristics, so that a practical, yet accurate battery lifetime prediction model can be formed.
sensor Web deployment is by nature a spatial problem since nodes are highly constrained by the geographic characteristics of the environment. Therefore, there is a need for an efficient modelling paradigm to address t...
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