119 research outputs found

    Cross-layer Based MANET Performance Optimization for Different Traffic and Mobility Scenario

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    The self configuring dexterous autonomy of MANET imposes some network challenges constrained to traditional dynamic routing behaviour. So as working with different mobility and traffic patterns with normal management schemes may lead some minor pitfalls to some important network performance parameters and hence can degrade the whole network performance. Here,  Our aim is to make some DSR and MAC based cross layer optimizations and testify it on different mobility and traffic scenarios so as to justify the robustness of our proposed improvement. Keywords— Cross- Layer, DSR, MAC, MANET, Optimizatio

    Body Sensor Network: A Modern Survey & Performance Study in Medical Perspect

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    As because of modern emerging technologies, low power integrated circuits and wireless communication has enabled a new generation of sensors network. The incorporation of these sensors networks in Health care is very popular and plays a vital role in breath breaking situations. The deployment of monitoring hardware incorporated with various wireless standards plays a key role in regard to interoperability, invasion privacy, sensors validation data consistency and interference related issues. The goal of our paper is to make a comparative study in realm of modern wireless trends such as Bluetooth, Wi-fi, Zigbee and Wibree and related facets. Index Terms– Wireless Body area network, Zigbee, Wi-fi, Bluetooot

    Quality of Service Optimization in Realm of Green Monitoring using Broad Area Sensor Network (BASN)

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    A Wireless Sensor Network(WSN) contains short range energy limited terminals/nodes in which multiple nodes participates one by one to transfer data from source node to Base station. Each node appends some amount of delay which degrades the network performance as the jittered behaviour of network may not be allowed in some applications. Again the faulty nature of tandem nodes may create some severe routing scenarios.  Concept of Broad Area Sensor Network (BASN) incorporates a real time communication between sensor node and Base station, which helps to optimize the Quality of Service (QoS). Our goal is to do extensive simulation on performance analysis of such sensor networks and its optimization. Keywords -  WSN ,energy limited terminals, jitter, Quality of service(QoS

    Correlations and Event-by-Event Fluctuations in High Multiplicity Events Produced in 208^{208}Pb-208^{208}Pb Collisions

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    Analysis of high multiplicity events produced in 158A GeV/c 208^{208}Pb-208^{208}Pb collisions is carried out to study the event-by-event fluctuations. The findings reveal that the method of scaled factorial moments can be used to identify the events having densely populated narrow phase space bins. A few events sorted out adopting this approach are individually analyzed. It is observed that these events do exhibit large fluctuations in their pseudorapidity, η\eta and azimuthal angle, ϕ\phi distributions arising out due to some dynamical reasons. Two particle Δη\Delta\eta-Δϕ\Delta\phi correlation study applied to these events too indicates that some complex two-dimensional structure of significantly high magnitude are present in these events which might have some dynamical origin. The findings reveal that the method of scaled factorial moments may be used as an effective triggering for events with large dynamical fluctuations.Comment: 20 pages, 7 figures (Accepted for publication in Advances in High Energy Physics

    Pseudorapidity Window Size Dependence of Multiplicity Fluctuations in High-Energy Collisions with System Size and Beam Energies

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    An investigation of the critical behavior of strongly interacting QCD matter has been performed by analyzing fluctuation observables on event-by-event (ebe) basis measured in high-energy collision experiments. The fluctuation analysis is performed using nuclear interactions at different target sizes and at different colliding beam energies as a function of varying width of pseudorapidity interval. For the sake of comparison, event-by-event multiplicity fluctuations in hadronic and heavy-ion collisions (p-H, p-A and A-B) are studied within the framework of the Lund Monte Carlo based FRITIOF model. Charged particle multiplicity and the variance of the multiplicity distribution are estimated for the interactions involving different target sizes and beam momenta i.e., p-H, p-CNO, p-AgBr at 200A GeV/c and 16^{16}O-AgBr collisions at 14.6, 60 and 200A GeV/c. Further, multiplicity fluctuations are quantified in terms of intensive quantity, the scaled variances ω\omega and the strongly intensive quantity ΣFB\Sigma_{FB} derived from the charged particle multiplicity and the width of the multiplicity distribution. Strongly intensive quantity ΣFB\Sigma_{FB} is a quantity of great significance to extract information about short and long-range multiplicity correlations. Furthermore, the collision centrality and centrality bin width dependent behavior of the multiplicity fluctuation have been examined in the framework of Lund Monte Carlo based FRITIOF model. Results based on the fluctuation analysis carried out in the present study are interpreted in terms of dynamics of collision process and the possibility of related QCD phase transition.Comment: 33 pages, 14 figures, published in Int. J. Mod. Phy. E Vol. 31, 2250056 (2022
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