Results 31 to 40 of about 4,266 (280)
Delay optimal opportunistic pipeline routing scheme for cognitive radio sensor networks
International Journal of Distributed Sensor Networks, 2018 In order to solve the problem of spectrum scarcity in wireless sensor networks, cognitive radio technology can be introduced into wireless sensor networks, giving rising to cognitive radio sensor networks.
Anfeng Liu, Wei Chen, Xiao Liu
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International Journal of Distributed Sensor Networks, 2018 In wireless sensor networks, time synchronization is an important issue for all nodes to have a unified time. The wireless sensor network nodes should cooperatively adjust their local time according to certain distributed synchronization algorithms to ...
Qi Yang +3 more
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Reliability and congestion control in cognitive radio sensor networks
Ad Hoc Networks, 2011 Communication requirements for cognitive radio sensor networks (CRSN) necessitate addressing the problems posed by dynamic spectrum access (DSA) in an inherently resource-constrained sensor networks regime. In this paper, arising challenges for reliability and congestion control due to incorporation of cognitive radio capability into sensor networks ...
Ahmet Ozan Biçen, Özgür B. Akan
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One-Bit Spectrum Sensing in Cognitive Radio Sensor Networks [PDF]
Circuits, Systems, and Signal Processing, 2019 This paper proposes a spectrum sensing algorithm from one bit measurements in a cognitive radio sensor network. A likelihood ratio test (LRT) for the one bit spectrum sensing problem is derived. Different from the one bit spectrum sensing research work in the literature, the signal is assumed to be a discrete random correlated Gaussian process, where ...
Hadi Zayyani +2 more
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Airborne Base Stations for Emergency and Temporary Events
, 2013 This paper introduces a rapidly deployable wireless network based on Low Altitude Platforms and portable land units to support disaster-relief activities, and to extend capacity during temporary mass events.
Munari, Andrea +19 more
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Distributed compressed wideband sensing in Cognitive Radio Sensor Networks [PDF]
2011 IEEE Conference on Computer Communications Workshops (INFOCOM WKSHPS), 2011 A novel distributed compressed wideband sensing scheme for Cognitive Radio Sensor Networks (CRSN) is proposed in this paper. Taking advantage of the distributive nature of CRSN, the proposed scheme deploys only one single narrowband sampler with ultra-low sampling rate at each nodes to accomplish the wideband spectrum sensing.
Huazi Zhang +2 more
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Cognitive Radio Sensor Network-Based Urgent Communication for Field Hospitals [PDF]
In this study, a medical sensor network structure based on cognitive wireless regional area network (WRAN) technology is proposed for urgent communication in field hospitals.
Bayrakdar, Muhammed Enes, Ekici, Huseyin
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ETRI Journal, 2019 A priority‐based data communication approach, developed by employing cognitive radio capacity for sensor nodes in a wireless terrestrial sensor network (TSN), has been proposed.
Muhammed Enes Bayrakdar
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Reinforcement Learning-based Spectrum Sharing for Cognitive Radio [PDF]
, 2011 This thesis investigates how distributed reinforcement learning-based resource assignment algorithms can be used to improve the performance of a cognitive radio system.
Jiang, Tao
core
Advanced Healthcare Materials, EarlyView.A long‐lived, five‐cell‐type human neurovascular (PENTA) model recreates vascular disorganization and incomplete repair after traumatic brain injury (TBI). By integrating endothelial, glial, neuronal, and immune components within a 3D scaffold, the platform enables time‐resolved analysis of neurovascular remodeling and provides a human‐relevant system ...
Daniel S. Hinrichsen +6 more
wiley +1 more source