The following topics are dealt with: systems biology; control design methods; adaptive and non-adaptive filtering; two-wheeled road vehicles; networks and QoS; control systems modeling and identification; wireless sen...
The following topics are dealt with: systems biology; control design methods; adaptive and non-adaptive filtering; two-wheeled road vehicles; networks and QoS; control systems modeling and identification; wireless sensornetworks; image processing; smart multimedia systems; digital communications; speech and audio; mobile and wireless communications; video and multimedia signal processing; OFDM systems; bioinformatics; system theory.
The following topics are dealt with: wireless pervasive computing; wireless sensornetworks; wireless mesh backhaul networks; multiple access; localization; signal processing; ad hoc networks; multimedia; cooperative ...
The following topics are dealt with: wireless pervasive computing; wireless sensornetworks; wireless mesh backhaul networks; multiple access; localization; signal processing; ad hoc networks; multimedia; cooperative communications; PANs; cognitive radio; security and diversity; WiMAX; MIMO; software radio.
In this paper, we propose a Markov chain-based analytical framework for modeling the behavior of the medium access control (MAC) protocol in IEEE 802.15.4 multihop wireless sensornetworks. First, we present an analyt...
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In this paper, we propose a Markov chain-based analytical framework for modeling the behavior of the medium access control (MAC) protocol in IEEE 802.15.4 multihop wireless sensornetworks. First, we present an analytical framework for 1-hop networking scenarios, i.e., scenarios where all the sensor nodes communicate directly to the network coordinator. Then, we extend our framework to 2-hop networking scenarios, i.e., scenarios where sensor nodes communicate to the coordinator through an intermediate relay node which forwards the packets received from the sources (i.e., the sensors) toward the final destination (i.e., the coordinator). No acknowledgment messages are transmitted to confirm successful data packet deliveries, and communications are beaconed (i.e., they make use of synchronization packets denoted as "beacons"). The aggregate network throughput and the packet delivery delay are evaluated. Our results show a good agreement between the proposed analytical model and realistic ns-2 simulation results.
In the paper, a new parallel LZW-Like algorithm, bidirectory LZW algorithm (BD-LZW) will be interpreted The new algorithm can be used in data compression/decompression system which runs on multi-microprocessor system,...
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In this paper we propose a scheme for self-organizing sensornetworks; the scheme allows a sensor network to adapt to topological changes, include new batches of sensors, and disregard the sensors that have depleted t...
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In this paper we propose a scheme for self-organizing sensornetworks; the scheme allows a sensor network to adapt to topological changes, include new batches of sensors, and disregard the sensors that have depleted their power reserves, or have been compromised. The algorithm for self-organization allows the sensor network to carry out its mission, has built-in provisions for information assurance, and extends the lifetime of the network by reducing the power consumption; it minimizes the number of collisions experienced by a sensor when it transmits and maximizes the time a sensor is either idle or dedicated to monitoring and/or internal data processing.
The sensornetworks had been used for various application areas and showed effectiveness under the prior application planning and right circumstances that includes cost, data handling and other resources. In order to ...
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Recent results on Consensus protocols for networks are presented. The basic tools and the main contribution available in the literature are considered, together with some of the related challenging aspects: estimation...
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Recent results on Consensus protocols for networks are presented. The basic tools and the main contribution available in the literature are considered, together with some of the related challenging aspects: estimation in networks and how to deal with disturbances is considered. Motivated by applications to sensor, peer-to-peer, and ad hoc networks, many papers have considered the problem of estimation in a consensus fashion. Here, the Unknown But Bounded (UBB) noise affecting the network is addressed in details. Because of the presence of UBB disturbances convergence to equilibria with all equal components is, in general, not possible. The solution of the ε-consensus problem, where the states converge in a tube of ray ε asymptotically or in finite time, is described. In solving the ε-consensus problem a focus on linear protocols and a rule for estimating the average from a compact set of candidate points, the lazy rule, is shown.
An algorithm for an energy-efficient communication, the average load distance (ALD) communication, to forward data from sensor to the cluster head in a hierarchal wireless sensor network is proposed. The objective of ...
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An algorithm for an energy-efficient communication, the average load distance (ALD) communication, to forward data from sensor to the cluster head in a hierarchal wireless sensor network is proposed. The objective of the ALD is to prolong the network life-time without additional computational overhead. Implementation of the algorithm indicates that the proposed mode can be up to 88% more efficient over direct mode of communication with regard to per-round maximum energy consumption. An application study shows that ALD can save up to 47% of wireless sensornetworks operational cost when compared to direct mode transmission.
The rapid advancement in computing has enabled the development of low cost wireless sensornetworks (WSNs), and making WSNs one of the most important research areas. Based on the characteristics and major purpose of W...
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The rapid advancement in computing has enabled the development of low cost wireless sensornetworks (WSNs), and making WSNs one of the most important research areas. Based on the characteristics and major purpose of WSNs, it has been proposed to integrate sensor network and database technologies to improve the management of data processed from sensornetworks. The distributed database is not a new research issue, but in case of WSN, there exists much extra difficulty because there are numerous constraints in WSNs comparing with traditional distributed database, such as limited energy, mobility and heterogeneity. This paper introduces the basic concept of query processing in WSN and how it is performed, presents the state-of-the-art by examining six current related projects, identifies the research challenges highlighted by major related projects, and looks at how the projects proposed to address those research challenges. It has been found that several limitations of the existing related approaches were emerged in mobile and heterogeneous WSN. This paper has also investigated these limitations and discussed the possible future research directions.
Distributed acoustic sensing underlies an increasingly important class of sensor network applications, from habitat monitoring and bioacoustic census to security applications and virtual fences. VoxNet is a complete h...
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ISBN:
(纸本)9780769531571
Distributed acoustic sensing underlies an increasingly important class of sensor network applications, from habitat monitoring and bioacoustic census to security applications and virtual fences. VoxNet is a complete hardware and software platform for distributed acoustic monitoring applications that focuses on three key goals: (1) rapid deployment in realistic environments;(2) a high level programming language that abstracts the user from platform and network details and compiles into a high performance distributed application;and (3) an interactive usage model based on run-time installable programs, with the ability to run the same high level program seamlessly over live or stored data. The VoxNet hardware is self-contained and weather-resistant, and supports a four-channel microphone array with automated time synchronization, localization, and network coordination. Using VoxNet, an investigator can visualize phenomena in real-time, develop and tune online analysis, and record raw data for off-line analysis and archival. This paper describes both the hardware and software elements of the platform, as well as the architecture required to support distributed programs running over a heterogeneous network. We characterize the performance of the platform, using both microbenchmarks that evaluate specific aspects of the platform and a real application running in the field.
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