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In marine science, underwater sensor networking (UWSN) is the most important and interesting arena. A novel noise aware Level Based Routing Protocol (LBRP) is proposed in this paper to contribute in this field. The LBRP is essentially a level-based routing protocol. State information is not needed to be stored and only a small portion of the total nodes are engaged in routing. It also promises the...
In WSN there is always a scope of improvement in efficient energy utilization, network lifetime. Efficient energy utilization always seems to be an important aspect in WSN's. Because of the fact that energy consumption directly effect the overall performance of WSN. Numbers of protocols are designed for enhancement of network lifetime and prevent the batteries from earlier drainage. Most of the protocols...
This paper explores the impact of high power factor (HPF) on the life of self-ballasted lamps or commonly referred as CFLs. In HPF CFLs the lamp current crest factor is usually very high. From the research work done so far it is well understood that the high current crest factor is detrimental for the life of lamp electrodes. The work done in this paper provides information about the filament current...
In Wireless Sensor Networks, sensor nodes have limited resources such as processing power, memory and energy. Energy is an important factor to determine the lifetime of the network. Most part of the energy of a node is consumed in transmitting and receiving the data. Data transmission should be energy efficient to maximize the network's lifetime. Different architectures are used to transmit the data...
During the process that wireless sensor network try to cover its target area, a lot of redundant nodes are generated, resulting in excessive network energy consumption and incomplete node coverage. Against this problem, an efficient covering algorithm based on point set optimization is proposed. In the algorithm, the Gaussian normal density function and coverage area probability function are utilized...
Energy of sensor nodes is scarce resource in wireless sensor network. It is vital to reduce energy consumption to improve lifetime of wireless sensor network. A proficient way to improve lifetime is to partition sensor network into groups called cluster with high energy node acting as leader of the cluster called cluster head. Cluster head is responsible for managing intra-cluster and inter cluster...
Load on individual cluster head node increases (decreases) if there exist less (more) than the optimum number of cluster head nodes, As we only fix the the number of cluster heads and as the nodes choose the nearest cluster head for data transmission, the number of supported nodes may vary for different cluster head nodes. This leads to uneven load distribution among nodes in a Wireless Sensor Network...
Wireless Sensor Networks (WSNs) have application in a variety of fields including inhospital locations, military purposes, transportation automation, home and industrial automation. WSNs also are used in monitoring synchronous or asynchronous events that require periodic data collection. WSNs consist of a large number small device or Wireless Nodes (WNs) and are responsible for sensing, collecting,...
In wireless sensor networks, clustering algorithm prolongs works' lifetime drastically. In a cluster, because the distances are different between member nodes and head node, the energy consumption of member nodes will become unbalanced when they transmit message to the head node directly. The EBCA (energy balanced consumption algorithm) is proposed for the problem. In EBCA, member nodes are divided...
In this paper, we propose an iteration-free algorithm to find the optimal configuration, including transmit power and source coding rates, to maximize the lifetime of a cluster utilizing Slepian-Wolf source coding of data sent to a fusion center. Exact closed form solutions are derived when the fusion center is not energy constrained. When the fusion center is energy constrained, a near optimum solution...
In wireless sensor networks (WSNs), extending networks lifetime is one of the fundamental and important issues. One of the ways is to choose the fewest number of sensors and maintains the coverage of domain. In this paper a new way of dividing domain into regular hexagon is presented, which is the dividing domain algorithms (DDA). And the simple procedure runs in a short time and the coverage sensor...
In peer to peer systems the problem of free riders and lack of motivation to share files result in dwindling life time of p2p systems This also results in lack of interested files in the system. Here in this paper we present a number of novel ideas like building sub systems in p2p systems with separate incentive for these sub system, peer to peer lending, shared sharing , p2p incentive banks, to motivate...
Wireless sensor networking is envisioned as an economically viable paradigm and a promising technology because of its ability to provide a variety of services, such as intrusion detection, weather monitoring, security, tactical surveillance, and disaster management. The services provided by wireless sensor networks (WSNs) are based on collaboration among small energy-constrained sensor nodes. The...
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