There has been significant development in wireless technology which has enabled us to connect devices with conveniences. This paper makes an effort to utilize one of the wireless technologies ZigBee to programmable lo...
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Realtime voice communication is an essential requirement in emergency scenarios. Mobile ad hoc network (MANET) is a best suitable option for premises like conference or convention centre. The performance of VoIP servi...
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Ubiquitous knowledge discovery systems must be captured from many different perspectives. In earlier chapters, aspects like machine learning, underlying network technologies etc. were described. An essential component...
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Highly semi-polar (101¯3) oriented and fine structural AlN films were successfully prepared on silicon substrate by rf magnetron sputtering in this research. The dependence of the nitrogen concentrations and the ...
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Data mining algorithms have been proved to be useful for the processing of large data sets in order to extract relevant information and knowledge. Such algorithms are also important for analyzing data collected from t...
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Several NEMO protocols are proposed to support network mobility in PMIPv6 networks but they ignores packet loss problem during handover. Seamless handover is very important to support real-time traffic in NEMO environ...
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An inherent problem of unsupervised texture segmentation is the absence of previous knowledge regarding the texture patterns present in the images to be segmented. A new efficient methodology for unsupervised image se...
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In this paper, we investigate the optimal design problem of lenticular lens array show for wide viewing angle lenticular 3D display. It is shown that the use of triplet lens array enables the wide-viewing angle observ...
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ISBN:
(纸本)9781617827020
In this paper, we investigate the optimal design problem of lenticular lens array show for wide viewing angle lenticular 3D display. It is shown that the use of triplet lens array enables the wide-viewing angle observation with low-cross talk. We propose the optimal design procedure of triplet lens array for lenticular 3D displays using genetic algorithm with specially devised optimization cost function.
The performance of three different Entity-Attribute-Value (EAV) storage formats for Clinical Data Repositories (CDRs) is compared with regards to querying millions of data points from clinical sources to assess the am...
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To achieve full cooperative diversity gains while still obtaining spectral and energy efficiency, cooperative communications with relay selection schemes, i.e., only the best relay is selected from multiple relaying c...
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ISBN:
(纸本)9780984589333
To achieve full cooperative diversity gains while still obtaining spectral and energy efficiency, cooperative communications with relay selection schemes, i.e., only the best relay is selected from multiple relaying candidates to cooperate with the communication, have been extensively studied in recent research. In this paper, we review the recent research on optimal relay assignment for cooperative communications, and investigate the use of cooperative communications with adaptive relay selection for soft QoS provisioning in resource-constrained wireless sensor networks. We propose EEARS, an energy-efficient adaptive relay selection scheme, which is based on a multi-agent reinforcement learning framework. In EEARS, optimal relays, in terms of outage probability, spectral and energy efficiency, are selected distributedly from multiple relaying candidates to participate in the communication, without the needs of prior knowledge of the wireless network model and centralized control. Simulation results show that EEARS fits well in dynamic environments, and is effective in improving the satisfying level of soft QoS provisioning for WSNs, i.e., increasing the spectral and energy efficiency, and reducing the amount of time that QoS violation occurs, by exploiting spatial and time diversities. Furthermore, compared with schemes using fixed transmitting power, EEARS can achieve a higher energy efficiency by varying the transmission power level according to wireless channel conditions.
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