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Multimedia content delivery for remote patient monitoring using cognitive radio networks

Dramane Ouattara, Mohamed Aymen Chalouf, Omessaad Hamdi, Francine Krief
2014 2014 Wireless Telecommunications Symposium  
Acknowledgment This work is supported by the LICoRNe project, funded in part by the National Agency for Research in France ANR (Agence Nationale de la Recherche).  ...  Adaptation to wireless parameters means in that case, diagnosticallyrelevant selection of the source encoding parameters and the error control methods.  ...  E-health multimedia systems have been primarily based on 3G wireless networks [5] .  ... 
doi:10.1109/wts.2014.6835003 dblp:conf/wts/OuattaraCHK14 fatcat:yeulfro6dzdhjnskndvmblz4la

Hybrid strategy for reliable packet transfer and packet loss reduction in cognitive radio Ad-Hoc Network

C.V. Subhaskara Reddy, M. V. Subramanyam, P. Ramana Reddy
2021 International Journal of Advanced Technology and Engineering Exploration  
Cognitive radio ad-hoc network is characterized by frequent routing disruptions introduced due to intermittent spectrum availability.  ...  This work adopts multiple strategies of reliable link based selective multi path routing, secondary user caching packets, packet redundancy based recovery and adaptive packet generation based congestion  ...  Based on the channel availability information, hops are selected for forwarding. The method assumes known channel availability slots which are not always true in cognitive radio networks.  ... 
doi:10.19101/ijatee.2021.874446 fatcat:fr6umu3xinfb5k4cbzzqzjtp4e

Learning in vehicular dynamic spectrum access networks: Opportunities and challenges

Si Chen, Rama Vuyyuru, Onur Altintas, Alexander M. Wyglinski
2011 2011 International Symposium on Intelligent Signal Processing and Communications Systems (ISPACS)  
In particular, we describe an architecture for optimizing the overall performance of vehicular dynamic spectrum access (VDSA) networks.  ...  Consequently, this architecture is designed to enable VDSA in a more flexible wireless spectrum environment by leveraging the cognitive radio concept and existing wireless spectrum databases actively being  ...  It can be expected that adaptive channel selection will become crucial in future wireless networks.  ... 
doi:10.1109/ispacs.2011.6146215 dblp:conf/ispacs/ChenVAW11 fatcat:c4ijhkojxfehllymllrzbsem7i

On optimizing vehicular dynamic spectrum access networks: Automation and learning in mobile wireless environments

Si Chen, Rama Vuyyuru, Onur Altintas, Alexander M. Wyglinski
2011 2011 IEEE Vehicular Networking Conference (VNC)  
Consequently, the proposed architecture is designed to enable VDSA in a more flexible wireless spectrum environment by leveraging the cognitive radio concept and existing wireless spectrum databases actively  ...  temporal and spatial channel heterogeneity, and vehicle path prediction techniques are employed in order to enhance channel access in this operating environment.  ...  It can be expected that adaptive channel selection will become crucial in future wireless networks.  ... 
doi:10.1109/vnc.2011.6117122 dblp:conf/vnc/ChenVAW11 fatcat:2fkm2mpwa5horgy4oguqxbydfq

Adaptive Spectrum Opportunity Access in Cognitive Radio Networks

Mahdi Pirmoradian, Olayinka Adigun, Christos Politis
2013 Journal of Networks  
The secondary data delivery time is adapted in different spectrum opportunities through ASOA scheme based on the estimated collision rates in a sophisticated way.  ...  This paper presents the Adaptive Spectrum Opportunity Access (ASOA) scheme. The proposed scheme greatly improves spectrum utilization and provides improved QoS for the secondary users.  ...  The secondary users are assumed to be static and desire to utilize available licensed channels in an opportunistic manner based on their cognitive functionalities.  ... 
doi:10.4304/jnw.8.4.747-754 fatcat:xhpz6eaknrhv3mo34zpq3krtci

NS-2 based simulation framework for cognitive radio sensor networks

Syed Hashim Raza Bukhari, Sajid Siraj, Mubashir Husain Rehmani
2016 Wireless networks  
In this paper, we propose a simulation model for cognitive radio sensor networks (CRSNs) which is an attempt to combine the useful properties of wireless sensor networks and cognitive radio networks.  ...  Our proposed model considers the limited energy available for wireless sensor nodes that constrain the spectrum sensing process -an unavoidable operation in cognitive radios.  ...  Intermittent PR activity Utilize spectrum for short duration of time Short ON and short OFF periods Mixed PR activity To have an un predictable pattern over the spectrum Mixture of multiple activities  ... 
doi:10.1007/s11276-016-1418-5 fatcat:yqvnqc4bondilml7smb6ansbsa

A survey of spectrum sensing algorithms for cognitive radio applications

Tevfik Yucek, Huseyin Arslan
2009 IEEE Communications Surveys and Tutorials  
Furthermore, statistical modeling of network traffic and utilization of these models for prediction of primary user behavior is studied.  ...  In this paper, a survey of spectrum sensing methodologies for cognitive radio is presented.  ...  Optimum sensing durations to search for an available channel and to monitor a used channel are obtained.  ... 
doi:10.1109/surv.2009.090109 fatcat:lq37fnncovdvnpv556yxwkrgd4

Channel Status Learning for Cooperative Spectrum Sensing in Energy-Restricted Cognitive Radio Networks

Zilong Jin, Kan Yao, Yadang Chen, Ben Lee, Jinsung Cho, Lejun Zhang
2019 IEEE Access  
Since continuous spectrum sensing will greatly reduce the lifetime of a network composed of energy-restricted CR nodes, an accurate method for predicting spectrum occupancy is necessary to improve energy  ...  INTRODUCTION Wireless communication requirement in IoT services is rapidly growing, and the ISM spectrum based networks (e.g., Wireless Sensor Networks, Wireless Body Area Networks and Vehicle-to-Vehicle  ...  For example, basic HMM-based prediction methods were proposed to predict the next state of channels in [22] , [23] .  ... 
doi:10.1109/access.2019.2916065 fatcat:rv3finc7dfdw7hos33h4lhayfi

A predictive network resource allocation technique for cognitive wireless networks

Alia Asheralieva, Jamil Y. Khan, Kaushik Mahata, Eng Hwee Ong
2010 2010 4th International Conference on Signal Processing and Communication Systems  
Future wireless networks will allocate network resources based on cooperative techniques. Resource controllers will apply the cognitive principle to find out status of various networks.  ...  We propose a predictive resource allocation strategy where we employ adaptive algorithms to predict the network loading.  ...  In an auction based approach each channel is advertised with a minimum price and then kept resource open for certain duration so that secondary networks can bid for the resource.  ... 
doi:10.1109/icspcs.2010.5709685 fatcat:kymbt6nt45h2bjlijejpx7xsgy

Intelligent Wireless Communications Enabled by Cognitive Radio and Machine Learning [article]

Xiangwei Zhou, Mingxuan Sun, Geoffrey Ye Li, Biing-Hwang Juang
2018 arXiv   pre-print
Intelligent wireless communications aims at enabling the system to perceive and assess the available resources, to autonomously learn to adapt to the perceived wireless environment, and to reconfigure  ...  The perception capability and reconfigurability are the essential features of cognitive radio while modern machine learning techniques project great potential in system adaptation.  ...  The proposed method for dynamic channel selection is implemented in IEEE 802.11 wireless networks, which demonstrates that the model can effectively predict the network performance with respect to the  ... 
arXiv:1710.11240v4 fatcat:elt77cgcxvappbxvspp7evb74u

Probability Density Function Estimation in OFDM Transmitter and Receiver in Radio Cognitive Networks based on Recurrent Neural Network [article]

Mahdi Mir
2018 arXiv   pre-print
optimization proposed in OFDM-based cognitive radio network based on probability density function.  ...  In this article, spectrum opportunities prediction based on Recurrent Neural Network for bandwidth optimization and reducing the amount of energy by predicting spectrum holes discovery for quality of services  ...  In [5] using Bayesian learning for predicting an available channel or not available proposed that learning is considered geometric distribution for simple channel usage pattern.  ... 
arXiv:1807.07009v1 fatcat:i7f5hmqwlvcx3ipturq26qge54

The Cognitive Ad-hoc Network Spectrum - Routing Selection Method

Wu Peng
2013 International Journal of Future Generation Communication and Networking  
Based on cognitive self-organizing network transmission delay larger and larger interference to primary user receiver problem, put forward a method of spectrum joint routing selection, this method is effective  ...  At the same time on the cognitive network capacity maximization as the goal, put forward to jointly design spectrum collaborative perception and channel allocation.  ...  And then decide the choice of frequency spectrum; Spectrum selection based on the shortest path method, according to the analysis of the estimated time for spectrum of switching and channel connec tion  ... 
doi:10.14257/ijfgcn.2013.6.6.14 fatcat:hdwjm64zefd5jpupt6nyv6avja

Increased Energy Efficiency via Delay-Tolerant Transmissions in Cognitive Radio Networks

BI ZHAO, Vasilis Friderikos
2013 Network Protocols and Algorithms  
We are currently witnessing the emergence of two important trends in wireless networks, namely the increased usage of Internet like applications, many of them which are delay tolerant, and cognitive radio  ...  just a few) to reduce the energy consumption in cognitive networks.  ...  Network Protocols and Algorithms ISSN 1943-3581 2013, Vol. 5, No. 2 www.macrothink.org/npa  ... 
doi:10.5296/npa.v5i2.3265 fatcat:qn2orw44gjctrn6lm34somiq6q

Cognitive Learning-Aided Multi-Antenna Communications [article]

Ahmet M. Elbir, Kumar Vijay Mishra
2022 arXiv   pre-print
This article provides a synopsis of various DL-based methods to impart cognitive behavior to multi-antenna wireless communications for improved robustness and adaptation to the environmental changes while  ...  Cognitive communications have emerged as a promising solution to enhance, adapt, and invent new tools and capabilities that transcend conventional wireless networks.  ...  For example, during channel estimation, the input is the received array data and the label is the channel matrix (obtained via an analytical method).  ... 
arXiv:2010.03131v3 fatcat:q6bvn4vqzba6fhbvqhq2q26xqa

Cognitive radio based connectivity management for resilient end-to-end communications in VANETs

Claudio Silva, Michele Nogueira, Donghyun Kim, Eduardo Cerqueira, Aldri Santos
2016 Computer Communications  
MOCA benefits from the flexibility and adaptability of CR, which opportunistically accesses the best available licensed channel frequencies.  ...  In view of this, we propose MOCA, a M echanism for cOnnectivity management in C ognitive vehiculAr networks, which make use of cognitive radio (CR) technology, to overcome frequent link disruptions and  ...  This work was also supported in part by National Natural Science Foundation of China for Young Scholar; Brazilian National Foundations as CNPq, CAPES, Fundação Araucária and FAPESPA.  ... 
doi:10.1016/j.comcom.2015.12.009 fatcat:vytcttlvg5ejrkopg3ogvyd4ye
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