Results 11 to 20 of about 44,065 (274)
Cooperative wideband spectrum sensing with multi-bit hard decision in cognitive radio [PDF]
, 2013 Cognitive radio offers an increasingly attractive solution to overcome the underutilization problem. A sensor network based cooperative wideband spectrum sensing is proposed in this paper. The purpose of the sensor network is to determine the frequencies
Ammar, M. +4 more
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Cognitive radio sensor networks
IEEE Network, 2009 Dynamic spectrum access stands as a promising and spectrum-efficient communication approach for resource-constrained multihop wireless sensor networks due to their event-driven communication nature, which generally yields bursty traffic depending on the event characteristics.
Akan, Ozgur B. +2 more
openaire +3 more sources
Cluster-based scheduling for cognitive radio sensor networks [PDF]
Journal of Ambient Intelligence and Humanized Computing, 2018 In this paper, we define a cluster based scheduling algorithm for Cognitive Radio Sensor Networks (CRSNs). To avoid inter-clusters collision, we assign fixed channels only to nodes having one-hop neighbors out of their clusters. We denote these nodes as specific nodes.
Idoudi, Hanen +3 more
openaire +2 more sources
A Robust and Energy-Efficient Transport Protocol for Cognitive Radio Sensor Networks
Sensors, 2014 A cognitive radio sensor network (CRSN) is a wireless sensor network in which sensor nodes are equipped with cognitive radio. CRSNs benefit from cognitive radio capabilities such as dynamic spectrum access and transmission parameters reconfigurability ...
Shelly Salim, Sangman Moh
doaj +1 more source
Secrecy performance of TAS/SC-based multi-hop harvest-to-transmit cognitive WSNs under joint constraint of interference and hardware imperfection [PDF]
, 2019 In this paper, we evaluate the secrecy performance of multi-hop cognitive wireless sensor networks (WSNs). In the secondary network, a source transmits its data to a destination via the multi-hop relaying model using the transmit antenna selection (TAS ...
Duy, Tran Trung +4 more
core +1 more source
An LSPI based reinforcement learning approach to enable network cooperation in cognitive wireless sensor networks [PDF]
, 2013 The number of wirelessly communicating devices increases every day, along with the number of communication standards and technologies that they use to exchange data.
De Poorter, Eli +3 more
core +2 more sources
Sensors, 2014 A cognitive radio sensor network (CRSN) is a wireless sensor network whose sensor nodes are equipped with cognitive radio capability. Clustering is one of the most challenging issues in CRSNs, as all sensor nodes, including the cluster head, have to use ...
Shelly Salim +3 more
doaj +1 more source
Information reuse in dynamic spectrum access [PDF]
, 2013 Dynamic spectrum access (DSA), where the permission to use slices of radio spectrum is dynamically shifted (in time an in different geographical areas) across various communications services and applications, has been an area of interest from technical ...
Krishnamurthy, P, Tipper, D, Weiss, M
core +1 more source
International Journal of Distributed Sensor Networks, 2015 In cognitive radio networks, secondary users may not sense licensed channels efficiently due to problems of fading channel, shadowing, unfamiliar environment, and so forth.
Thanh-Tung Nguyen, Insoo Koo
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An Energy-Efficient Game-Theory-Based Spectrum Decision Scheme for Cognitive Radio Sensor Networks
Sensors, 2016 A cognitive radio sensor network (CRSN) is a wireless sensor network in which sensor nodes are equipped with cognitive radio. In this paper, we propose an energy-efficient game-theory-based spectrum decision (EGSD) scheme for CRSNs to prolong the network
Shelly Salim, Sangman Moh
doaj +1 more source