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- rfcApril 2020
RFC 8763: Deployment Considerations for Information-Centric Networking (ICN)
Information-Centric Networking (ICN) is now reaching technological maturity after many years of fundamental research and experimentation. This document provides a number of deployment considerations in the interest of helping the ICN community move ...
- research-articleJanuary 2020
A MCCDMA-based cognitive radio system for the internet of things
Journal of Intelligent & Fuzzy Systems: Applications in Engineering and Technology (JIFS), Volume 38, Issue 2Pages 1339–1347https://doi.org/10.3233/JIFS-179497In order to solve the problem of effective allocation of spectrum resources and provide an effective spectrum access method for the Internet of Things, a cognitive wireless system based on MCCDMA structure is proposed, and the performance of the system is ...
- demonstrationOctober 2018
Design and Implementation of LTE Advanced Underlay Device to Device Communication Framework
MobiCom '18: Proceedings of the 24th Annual International Conference on Mobile Computing and NetworkingPages 855–857https://doi.org/10.1145/3241539.3267728Device to Device (D2D) communication is one of the key enhancement of Long-Term Evolution (LTE) Advanced standard which is a precursor to fifth generation (5G) cellular standard. D2D has gained considerable attention due to several drawbacks associated ...
- research-articleNovember 2016
Stay or Switch?: Analysis and Comparison of Delays in Cognitive Radio Networks with Interweave and Underlay Spectrum Access
MobiWac '16: Proceedings of the 14th ACM International Symposium on Mobility Management and Wireless AccessPages 9–18https://doi.org/10.1145/2989250.2989265Cognitive Networks have been proposed to opportunistically discover and exploit licensed spectrum bands, in which the secondary users' (SU) activity is subordinated to primary users (PU). Depending on the nature of interaction between the SU and PU, ...
- articleJuly 2016
Performance of cognitive relay network with novel hybrid spectrum access schemes with imperfect CSI
International Journal of Communication Systems (IJOCS), Volume 29, Issue 11Pages 1761–1776https://doi.org/10.1002/dac.3142Two novel spectrum access schemes, a hybrid spectrum access scheme HSAS and a modified HSAS combining underlay mode and overlay mode, are proposed for a relay based cognitive radio CR network. The CR employs the underlay mode with imperfect channel ...
- articleApril 2016
Queueing analysis for preemptive transmission in underlay CRNs
International Journal of Communication Systems (IJOCS), Volume 29, Issue 6Pages 1138–1155https://doi.org/10.1002/dac.3082In cognitive radio applications, there are multiple different types of message queues. Existing queueing based works in underlay cognitive radio networks mainly focused on homogeneous packets. Therefore, we propose a new underlay scheme to deal with ...
- research-articleNovember 2015
An Analytical Framework for Device-to-Device Communication in Cellular Networks
IEEE Transactions on Wireless Communications (TWC), Volume 14, Issue 11Pages 6297–6310https://doi.org/10.1109/TWC.2015.2452264This paper presents a framework that enables characterizing analytically the spectral efficiency achievable by device-to-device (D2D) communication integrated with a cellular network. This framework is based on a stochastic geometry formulation with a ...
- research-articleOctober 2015
Cognitive Radio Techniques Under Practical Imperfections: A Survey
- Shree Krishna Sharma,
- Tadilo Endeshaw Bogale,
- Symeon Chatzinotas,
- Bjorn Ottersten,
- Long Bao Le,
- Xianbin Wang
IEEE Communications Surveys & Tutorials (IEEE_ICST), Volume 17, Issue 4Pages 1858–1884https://doi.org/10.1109/COMST.2015.2452414Cognitive radio (CR) has been considered as a potential candidate for addressing the spectrum scarcity problem of future wireless networks. Since its conception, several researchers, academic institutions, industries, and regulatory and standardization ...
- research-articleMay 2015
A Comparative Performance Analysis of Interweave and Underlay Multi-Antenna Cognitive Radio Networks
IEEE Transactions on Wireless Communications (TWC), Volume 14, Issue 5Pages 2911–2925https://doi.org/10.1109/TWC.2015.2396519In this paper, an analytical performance study for multi-antenna Cognitive Radio (CR) systems is presented. The two most popular CR approaches, namely, the interweave and underlay system designs, are considered and based on the derived analytical ...
- research-articleMay 2015
Toward Transparent Coexistence for Multihop Secondary Cognitive Radio Networks
IEEE Journal on Selected Areas in Communications (JSAC), Volume 33, Issue 5Pages 958–971https://doi.org/10.1109/JSAC.2014.2361090The dominate spectrum sharing paradigm of today is interference avoidance, where a secondary network can use the spectrum only when such a use is not interfering with the primary network. However, with the advances of physical-layer technologies, the ...
- ArticleDecember 2014
A Realistic Underlay Concept for Delay Tolerant Networks in Disaster Scenarios
MSN '14: Proceedings of the 2014 10th International Conference on Mobile Ad-hoc and Sensor NetworksPages 163–170https://doi.org/10.1109/MSN.2014.29During disaster relief missions, it is essential to provide reliable communication between the different rescue teams and to the victims as well. Since a disaster is likely toe Mobile Ad hoc Networks (MANETs) are the best choice to reestablish ...
- research-articleJune 2013
Efficient content-based routing with network topology inference
DEBS '13: Proceedings of the 7th ACM international conference on Distributed event-based systemsPages 51–62https://doi.org/10.1145/2488222.2488262Content-based publish/subscribe has gained high popularity for large-scale dissemination of dynamic content. Yet it is highly challenging to enable communication-efficient dissemination of content in such systems, especially in the absence of a broker ...
- ArticleJanuary 2013
Hybrid spectrum sharing in dynamic spectrum access networks
ICOIN '13: Proceedings of the 2013 International Conference on Information Networking (ICOIN)Pages 324–329https://doi.org/10.1109/ICOIN.2013.6496398In this work, inefficient spectrum usage problem which will lead to spectrum scarcity in future communications has been addressed. According to Federal Communications Commission, spectrum sharing is a technique to efficiently utilize the spectrum. We ...
- ArticleNovember 2012
Performance analysis with different sensing results in the cognitive radio networks
ICPCA/SWS'12: Proceedings of the 2012 international conference on Pervasive Computing and the Networked WorldPages 477–481https://doi.org/10.1007/978-3-642-37015-1_42In this paper, we provide capacity and outage probability analysis with different sensing results for three different transmission scenarios in the cognitive radio networks, i.e., overlay, underlay, and cooperative transmission of secondary users (SUs) ...
- research-articleOctober 2011
Link reliability of underlay cognitive radio: symbol error rate analysis and optimal power allocation
CogART '11: Proceedings of the 4th International Conference on Cognitive Radio and Advanced Spectrum ManagementArticle No.: 70, Pages 1–5https://doi.org/10.1145/2093256.2093326We study the SER performance in underlay cognitive radio (CR) systems comprising a secondary transmitter (ST), a secondary receiver (SR) and a primary receiver (PR). We assume that the ST, SR and PR are each equipped with a single antenna. Under the ...
- research-articleNovember 2010
Secondary transceiver design in the presence of frequency offset between primary and secondary systems
IEEE Transactions on Wireless Communications (TWC), Volume 9, Issue 11Pages 3461–3471https://doi.org/10.1109/TWC.2010.091510.091623When both primary and secondary systems are orthogonal frequency division multiplexing modulated and are non-cooperative, carrier frequency offset between the systems is inevitable to cause harmful interference. In this paper, we jointly optimize ...
- ArticleApril 2010
Congestion Game Models for Capacity and Bandwidth Relation in Dynamic Spectrum Access
ITNG '10: Proceedings of the 2010 Seventh International Conference on Information Technology: New GenerationsPages 897–902https://doi.org/10.1109/ITNG.2010.50Dynamic spectrum access is a technique to utilize the spectrum resources efficiently in a cognitive radio environment. To use spectrum efficiently various models were designed by researchers. Game theoretical models are few of the efficient techniques ...
- ArticleSeptember 2009
Dynamic spectrum access in underlay cognitive radio system with SINR constraints
WiCOM'09: Proceedings of the 5th International Conference on Wireless communications, networking and mobile computingPages 1552–1555How to improve the spectrum utility of the unlicensed uses (secondary users) without interfering the licensed spectrum holders' usage becomes a key issue in the cognitive radio system. In this paper, we consider an underlay cognitive radio system in ...
- research-articleJuly 2008
Availability models for underlay aware overlay networks
DEBS '08: Proceedings of the second international conference on Distributed event-based systemsPages 169–180https://doi.org/10.1145/1385989.1386011Event broker networks are P2P overlays constructed out of a few select nodes of the underlying physical network (aka underlay). Reliable event delivery on such networks requires the overlay to be highly available. While high availability is usually ...