Location via proxy:   [ UP ]  
[Report a bug]   [Manage cookies]                
Filters








565 Hits in 4.1 sec

Dynamic Spectrum Management with Network Function Virtualization for UAV Communication

Zhengjia Xu, Ivan Petrunin, Antonios Tsourdos
2021 Journal of Intelligent and Robotic Systems  
integrated with the dynamic spectrum management (DSM) and network function virtualization (NFV) technology to serve urban operations.  ...  The proposed scheme is discussed in terms of the high-level system architecture, virtual network architecture, specific virtual functions (SVFs), and affiliated operation support databases.  ...  Runqi Chai for assistance with  ... 
doi:10.1007/s10846-021-01318-0 fatcat:6nsmjxcwnfhwjgwzsyjk4qasha

Technical Issues on Cognitive Radio-Based Internet of Things Systems: A Survey

Faroq A. Awin, Yasser M. Alginahi, Esam Abdel-Raheem, Kemal Tepe
2019 IEEE Access  
INDEX TERMS Cognitive radio, spectrum sensing, IoT, MAC, spectrum accessing, spectrum sharing, spectrum management, security, data privacy, blockchain, machine learning.  ...  Hence, opportunistic approaches for Radio Frequency (RF) spectrum control and management to optimize the scare spectrum resources is emerging as one of the main challenges.  ...  state that lie within a wideband spectrum.  ... 
doi:10.1109/access.2019.2929915 fatcat:orlccnbvpffqbkg45dtdl6iyau

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
We describe the state-of-the-art of relevant techniques, covering spectrum sensing and access approaches and powerful machine learning algorithms that enable spectrum- and energy-efficient communications  ...  In this paper, we discuss the development of the cognitive radio technology and machine learning techniques and emphasize their roles in improving spectrum and energy utility of wireless communication  ...  Besides the aforementioned wideband spectrum sensing algorithms, spectrum access and resource optimization need to be more efficient and adapt to the higher signal attenuation.  ... 
arXiv:1710.11240v4 fatcat:elt77cgcxvappbxvspp7evb74u

5G technology: towards dynamic spectrum sharing using cognitive radio networks

W. S. H. M. W. Ahmad, N. A. M. Radzi, F. S. Samidi, A. Ismail, F. Abdullah, M. Z. Jamaludin, M. N. Zakaria
2020 IEEE Access  
However, the scarcity of the spectrum resource creates a serious challenge in achieving an efficient management scheme.  ...  The surveys and studies are categorised into one of the main SS techniques on the basis of network architecture, spectrum allocation behaviour and spectrum access method.  ...  Interdisciplinary research is required for spectrum usage and access to manage the sharing of limited spectrum resources efficiently in the fields of market-and non-market-based mechanisms.  ... 
doi:10.1109/access.2020.2966271 fatcat:cobdo5ucibcdpc5jfecbdwhni4

Analysis of dynamic capabilities for spectrum sharing in the citizens broadband radio service

Seppo Yrjölä, Marja Matinmikko, Miia Mustonen, Petri Ahokangas
2017 Analog Integrated Circuits and Signal Processing  
Increased system dynamics in spectrum sharing will introduce a need for big data analytics, near real time network management capabilities and low cost third tier general authorized access radios, leveraging  ...  Spectrum sharing, introducing a rapid change in the technology and business environments, requires dynamic capabilities from spectrum offering, spectrum utilization, and spectrum management perspectives  ...  Key technology enablers are the scalable, high availability platform for CBRS databases, big data, analytics and future machine learning.  ... 
doi:10.1007/s10470-017-0931-5 fatcat:z2xnomjifrbzpk527zeznnnz6i

Application of Compressive Sensing in Cognitive Radio Communications: A Survey

Shree Krishna Sharma, Eva Lagunas, Symeon Chatzinotas, Bjorn Ottersten
2016 IEEE Communications Surveys and Tutorials  
Furthermore, we present a generalized framework for constructing the REM in compressive settings.  ...  Subsequently, we review the existing CSrelated works applied to different categories such as wideband sensing, signal parameter estimation and Radio Environment Map (REM) construction, highlighting the  ...  The RF awareness over a wideband can be acquired mainly with the following mechanisms: (i) Wideband SS, (ii) Signal parameter estimation, and (iii) Database information.  ... 
doi:10.1109/comst.2016.2524443 fatcat:qvil3rvugzfnlpvpuf5nuklk6m

A survey of MAC issues for TV white space access

You Han, Eylem Ekici, Haris Kremo, Onur Altintas
2015 Ad hoc networks  
The opening of TV white space (TVWS) bands for cognitive access is one of the first tangible steps to solve spectrum scarcity problem in current wireless networks.  ...  However, this has also raised many new challenges to efficiently use the TVWS spectrum.  ...  For example, in [18] , a combination of an up-to-date database of incumbents, sophisticated signal propagation modeling, and an efficient content dissemination mechanism is proposed to ensure efficient  ... 
doi:10.1016/j.adhoc.2014.11.009 fatcat:2dl4amo5brddbd6bzald2rxirm

A Survey on Spectrum Management for Unmanned Aerial Vehicles (UAVs)

Mohammed A. Jasim, Hazim Shakhatreh, Nazli Siasi, Ahmad Sawalmeh, Adel Aldalbahi, Ala Al-Fuqaha
2021 IEEE Access  
Motivated by this observation, this article presents a comprehensive survey on spectrum management for UAV operations.  ...  It identifies suitable management schemes that align with UAV features and requirements to enable safe and efficient usage of the radio spectrum.  ...  Access control: Users need an access mechanism and validated credentials to enter the spectrum database.  ... 
doi:10.1109/access.2021.3138048 fatcat:2h5ls7ywo5g3bbz454gqatvkw4

LPWAN Technologies: Emerging Application Characteristics, Requirements, and Design Considerations

Bharat S. Chaudhari, Marco Zennaro, Suresh Borkar
2020 Future Internet  
Prominent design constructs include admission and user traffic management, interference management, energy saving modes of operation, lightweight media access control (MAC) protocols, accurate location  ...  These characteristics translate into a key set of requirements including M2M traffic management, massive capacity, energy efficiency, low power operations, extended coverage, security, and interworking  ...  In many instances, the spectrum is not fully utilized. The access station or the device can sense and identify the gaps in spectrum usage and improve the efficiency of spectrum utilization [12] .  ... 
doi:10.3390/fi12030046 fatcat:yp4lueuhszfhfdpy5ssl5iweyq

A survey of cognitive radio handoff schemes, challenges and issues for industrial wireless sensor networks (CR-IWSN)

Stephen S. Oyewobi, Gerhard P. Hancke
2017 Journal of Network and Computer Applications  
of spectrum, minimal switching-delays, and efficient target channel selection strategies as well as effective link recovery maintenance.  ...  operating in ISM band resulting in scarcity of spectrum for reliable communication and/or disruption of ongoing communication.  ...  Acknowledgement We acknowledge the constructive feedbacks of anonymous reviewers which immensely improved this paper,and also Ayo Imoru, for his efforts in helping with editing and L A T E X.  ... 
doi:10.1016/j.jnca.2017.08.016 fatcat:7kuih7xajzdyrddrd666yvhir4

Recent advances on artificial intelligence and learning techniques in cognitive radio networks

Nadine Abbas, Youssef Nasser, Karim El Ahmad
2015 EURASIP Journal on Wireless Communications and Networking  
the radio spectrum.  ...  For efficient real-time process, the cognitive radio is usually combined with artificial intelligence and machine-learning techniques so that an adaptive and intelligent allocation is achieved.  ...  The authors in [61] used CBR for proper link management, network traffic balance, and system efficiency.  ... 
doi:10.1186/s13638-015-0381-7 fatcat:dq6aba75obc5vlxnbaqrerlsii

The DARPA WNaN network architecture

Jason Redi, Ram Ramanathan
2011 2011 - MILCOM 2011 Military Communications Conference  
DARPA's Wireless Network after Next (WNaN) meets these challenges using an architecture that combines several innovative features for the first time in a real functional system: dynamic spectrum access  ...  (DSA), adaptive multi-transceiver frequency assignment, multi-channel medium access, highly scalable routing and disruption-tolerant networking (DTN).  ...  ACKNOWLEDGMENT We thank the current DARPA Program Manager Dr. Bruce Fette, and the previous Program Manager Dr. Preston Marshall who provided leadership and guidance for the WNaN program.  ... 
doi:10.1109/milcom.2011.6127657 dblp:conf/milcom/RediR11 fatcat:hknqz7kobvdilipm7gup5hsomy

Visions of 4G

B.G. Evans, K. Baughan
2000 Electronics & communication engineering journal  
The requirements are thus for much more efficient utilisation of the spectrum and, perhaps, new ideas for system co-existence.  ...  database feeds.  ... 
doi:10.1049/ecej:20000608 fatcat:q7s4qxujbfg2fpzt34jj3kyl3e

A TD-LTE Prototype System with Modules for General-Purpose Cognitive Resource Management and Radio-Environmental Mapping

Tao Cai, Jaap van de Beek, Jad Nasreddine, Marina Petrova, Petri Mähönen
2011 International Journal of Wireless Information Networks  
In this article we describe a demonstrator that shows how the cognitive resource manager (CRM) and the radio-environmental map (REM) can be efficiently implemented in full commercial grade cellular system  ...  The demonstrator shows how the modular CRM together with its open interface, the universal link-layer API (ULLA), facilitates the implementation of efficient radio resource management techniques guaranteeing  ...  Introduction Many radio access technologies and their associated radio resource management (RRM) algorithms are developed and deployed in order to cope with the fast-increasing demand for mobile wideband  ... 
doi:10.1007/s10776-011-0153-1 fatcat:pasmjcd6e5gyzkq4wklahrstiq

Understanding Dynamic Spectrum Access: Models,Taxonomy and Challenges

Milind M. Buddhikot
2007 2007 2nd IEEE International Symposium on New Frontiers in Dynamic Spectrum Access Networks  
The static, commandand-control management of spectrum has led to barriers to accessing the spectrum in various dimensions.  ...  The notion of dynamic spectrum access can break these barriers in one or more of the dimensions.  ...  Another natural outcome of such liberalized access is the need for efficient and reliable enforcement mechanisms to ensure regulatory compliance of spectrum users.  ... 
doi:10.1109/dyspan.2007.88 fatcat:bgxf6fihn5e7niobhsktejrlia
« Previous Showing results 1 — 15 out of 565 results