Topology-Transparent Duty Cycling for Wireless Sensor Networks Computer Science& Engineering Arizona State University syrotiuk@asu.edu Abstract Our goal is to save energy in wireless sensor networks (WSNs) by periodic duty-cycling of sensor nodes. We schedule sensor nodes between active (transmit or receive) and sleep modes while bounding packet latency in the presence of collisions. In order to support a dynamic WSN topology, we focus on topology-transparent approaches to scheduling; these
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WIRELESS SENSOR NETWORK COVERAGE: DEMONSTARTING POWER SAVINGS AND LIMITATIONS WITH MINIMIZED COVERAGE BY SIDNEY I. RUBEY A thesis submitted to the Graduate faculty of the University of Colorado at Colorado Springs in partial fulfillment of the requirements for the degree of Master of Science Department of Computer Science 2011 This thesis for Master of Science degree by Sidney I. Rubey has been approved for the Department of Computer Science by ------------------------------------------------------------------------
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communication in a Wireless Sensor Network (WSN). There are various schemes to induce cooperation in a WSN to overcome this problem. In this paper, we have introduced a novel adversary model and have proposed an incentive based scheme to inspire cooperation among nodes in a Geometric Structure based WSN. The scheme has been formally analyzed. The efficacy of the scheme is also established through various simulation experiments. INTRODUCTION Nodes in mobile ad-hoc networks are arbitrarily deployed
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Abstract. The speech signal enhancement is needed to obtain clean speech signal from noisy signal. For multimodal optimization we better to use natural-inspired algorithms such as Firefly Algorithm (FA). We compare the firefly algorithm with particle swarm optimization technique. The proposed algorithm contains three module techniques. Those are preprocessing module, optimization module and spectral filtering module. The signals are taken from Loizou’s database and Aurora database for evaluating
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Figure 2 Each node pair performs a WSA handshake to select a TxSlot of a SCH . Nodes only switch to the selected SCH during the selected TxSlot in order to broadcast their own EMG packets and avoid missing the EMG packets on the CCH in another time. Nodes maintain the Neighbor Information List (NIL) and Channel Usage List (CUL). The NIL stores the SCH and TxSlot used by the neighbors while the CUL shows the available TxSlots of each SCH. Based on the NIL, a node knows when its neighbor
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between an active and sleep cycles. The integration of the wake-up unit in sensor nodes makes it possible for the nodes to stay in a deep sleep mode until a wake-up signal is received. The detection of the signal occurs on a passive level without the wireless transceiver being active. Data packet transmission takes place when the transceiver is activated. A. Data Packets Data packets are transmitted during the active period of the transceiver. The packet structure can be seen in Fig. 6. The transmission
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Paper reading assignment By Girish Bangalore Ramesh, SJSU:010120240 Wireless sensor networks are used to acquire the physical data from the sensors. Wireless network devices have to be authenticated and there location has to be to clearly tracked. Earlier to distinguish between the physical locations, spatial uncorrelation property of the channels was used. The broadcast nature of the wireless medium is vulnerable to Sybil attacks. The researchers have found out a new attack against the existing
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2Literature Review A body area network is a special type of network in which sensors placed over the body communicate and interact with each other in isolation. The use of Body area networks is increasing day by day and finding applications in many fields of daily life, wherein sensors are placed near the body or implanted with or within the body to collect the required data. This collected data is useful to draw conclusion about the result. These sensors could be used to communicate for long or
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Integrating Wireless Sensor Networks with the Web Walter Colitti Vrije Universiteit Brussel - ETRO Pleinlaan 2, 1050 Brussels +32 2 629 10 27 Kris Steenhaut Vrije Universiteit Brussel - ETRO Pleinlaan 2, 1050 Brussels +32 2 629 29 76 Niccolò De Caro Vrije Universiteit Brussel - ETRO University of Perugia - DIEI +32 2 629 10 27 wcolitti@etro.vub.ac.be ksteenha@etro.vub.ac.be ndecaro@etro.vub.ac.be ABSTRACT IPv6 over Low power Wireless Personal Area Networks (6LoWPAN) has accelerated
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Engineering Vol. 2, Issue 6, June 2013 Implementation and Evaluation of Wireless Mesh Networks on MANET Routing Protocols Shashi Bhushan1,Anil Saroliya2 ,Vijander Singh3 Research Scholar, Computer Science, Amity University, Jaipur, India 1 Assistant Professor, Computer Science, Amity University, Jaipur, India 2 Senior Lecturer, Computer Science, Amity University, Jaipur, India 3 Abstract—Wireless Mesh Network (WMN) is a kind of network which is made up of Mesh router and Mesh clients where Mesh router
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