Results 251 to 260 of about 258,598 (299)
Some of the next articles are maybe not open access.
A Survey of Dynamic Spectrum Access
IEEE Signal Processing Magazine, 2007Compounding the confusion is the use of the broad term cognitive radio as a synonym for dynamic spectrum access. As an initial attempt at unifying the terminology, the taxonomy of dynamic spectrum access is provided. In this article, an overview of challenges and recent developments in both technological and regulatory aspects of opportunistic spectrum
Brian M Sadler
exaly +2 more sources
A Spectrum Surveying Framework for Dynamic Spectrum Access Networks
IEEE Transactions on Vehicular Technology, 2009Dynamic spectrum access networks and wireless spectrum policy reforms heavily rely on accurate spectrum utilization statistics, which are obtained via spectrum surveys. In this paper, we propose a generic spectrum-surveying framework that introduces both standardization and automation to this process, as well as enables a distributed approach to ...
Dinesh Datla +2 more
exaly +2 more sources
Dynamic spectrum access in open spectrum wireless networks
IEEE Journal on Selected Areas in Communications, 2006One of the reasons for the limitation of bandwidth in current generation wireless networks is the spectrum policy of the Federal Communications Commission (FCC). But, with the spectrum policy reform, open spectrum wireless networks, and spectrum agile radios are set to drive next general wireless networks.
Yiping Xing +2 more
exaly +2 more sources
Detecting anomalous spectrum usage in dynamic spectrum access networks
Ad Hoc Networks, 2012Dynamic spectrum access has been proposed as a means to share scarce radio resources, and requires devices to follow protocols that access spectrum resources in a proper, disciplined manner. For a cognitive radio network to achieve this goal, spectrum policies and the ability to enforce them are necessary. Detection of an unauthorized (anomalous) usage
Larry J Greenstein +2 more
exaly +2 more sources
Advanced Dynamic Channel Access Strategy in Spectrum Sharing 5G Systems
IEEE Wireless Communications, 2017 5G wireless communications aim at providing higher data rates, spectral efficiency, and energy efficiency than 4G. To achieve this target, the spectrum resource with low utilization is emptied out for 5G refarming.
Siyu Lin, Linghe Kong, Qian Gao
exaly +1 more source
Asynchronous Dynamic Spectrum Access
IEEE Transactions on Vehicular Technology, 2012Synchronization among primary users (PUs) and secondary users (SUs) is either explicitly or implicitly assumed in the literature to allow reliable dynamic spectrum access (DSA) and cognitive radio (CR) networking. However, in realistic DSA that supports ad-hoc transmissions, perfect synchronization is not attainable in the absence of a centralized ...
Yu-Yu Lin, Kwang-Cheng Chen
openaire +1 more source
Dynamic spectrum access as a service
2012 Proceedings IEEE INFOCOM, 2012Recently there have been various studies on dynamic spectrum access (DSA) approaches, e.g., opportunistic spectrum access and spectrum auction, to address spectrum scarcity and inefficient spectrum utilization caused by today's static spectrum allocation policy.
Chunsheng Xin, Min Song 0002
openaire +1 more source
On the usefulness of spectrum prediction for dynamic spectrum access
2016 8th International Conference on Wireless Communications & Signal Processing (WCSP), 2016Spectrum prediction, as one enabling technique for dynamic spectrum access (DSA), has recently been received ever-increasing research attention. Most related studies (explicitly or implicitly) assume that spectrum prediction is useful for DSA. However, it does't fundamentally clear when spectrum prediction is really beneficial.
Jing Zhang +3 more
openaire +1 more source
Characterizing spectrum goodness for dynamic spectrum access
2012 50th Annual Allerton Conference on Communication, Control, and Computing (Allerton), 2012The combination of exclusive use spectrum licensing and growing demand for voice, data, and video applications is leading to artificial spectrum scarcity. A recent approach to alleviate this artificial spectrum scarcity innovatively uses unused TV spectrum, also called the TV white spaces, through dynamic spectrum access (DSA) techniques.
Aakanksha Chowdhery +3 more
openaire +1 more source
Dynamic spectrum access and management [Dynamic Spectrum Management
IEEE Wireless Communications, 2010This article addresses a subject that is ripe for application and is approaching necessity for the continued expansive growth in the use of wireless for broadband multimedia communications. If we carry on business as usual in broadcast, public service and paid auctions in assigning spectrum without regard to actual empirical full time use, we will find
Bijan Jabbari +2 more
openaire +1 more source