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Massive MIMO for dynamic spectrum access
2017 IEEE International Conference on Consumer Electronics (ICCE), 2017This paper proposes the application of massive MIMO, combined with millimeter (mm)-wave technology, in dynamic spectrum access (DSA) systems. In the proposed system, secondary users transmit together with the primary users, while using beamforming to control interference. Simulation results show significant performance gains compared to traditional DSA
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Blockchain-Enabled Dynamic Spectrum Access: Cooperative Spectrum Sensing, Access and Mining
2019 IEEE Global Communications Conference (GLOBECOM), 2019Traditionally, dynamic spectrum access (DSA) based on cooperative spectrum sensing relies on a centralized fusion centre to fuse and store the sensing results, which is vulnerable to single point of failure. In this paper, we propose a sensing-based DSA framework which is enabled by blockchain.
Yiyang Pei +4 more
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2015
Introduction The previous chapter touched on the concept that devices could share spectrum on a “dynamic” basis. So, for example, if a primary user was not using spectrum in a given location at a particular time then a secondary user might opportunistically make use of it.
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Introduction The previous chapter touched on the concept that devices could share spectrum on a “dynamic” basis. So, for example, if a primary user was not using spectrum in a given location at a particular time then a secondary user might opportunistically make use of it.
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Cooperative Spectrum Sensing for Dynamic Spectrum Access
2009 WRI International Conference on Communications and Mobile Computing, 2009In cognitive networks, cooperative spectrum sensing is employed to detect the presence of primary user quickly. In this paper, we study the sensing performance of a cognitive user U1 by allowing another cognitive user U2 to act as its relay. We vary the scaling factors (used by the relay U2 to amplify its received signal) of the unconstrained scheme ...
Yunxue Liu +5 more
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2015 13th International Conference on Telecommunications (ConTEL), 2015
Recently, Dynamic Spectrum Access (DSA) and Cognitive Radio (CR) have received increasing interest from the research community, raising high expectations related to spectrum sharing between mobile operators or exploiting white spaces (e.g. fixed wireless access in rural areas through the usage of locally unused TV spectrum).
Wirsing, Stephan, Reichl, Peter
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Recently, Dynamic Spectrum Access (DSA) and Cognitive Radio (CR) have received increasing interest from the research community, raising high expectations related to spectrum sharing between mobile operators or exploiting white spaces (e.g. fixed wireless access in rural areas through the usage of locally unused TV spectrum).
Wirsing, Stephan, Reichl, Peter
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Spectrum Simulation Testbed for Dynamic Spectrum Access
2008 3rd IEEE Symposium on New Frontiers in Dynamic Spectrum Access Networks, 2008The joint spectrum center (JSC) has developed a Spectrum Simulation Testbed to model networking and spectrum aspects of wireless tactical networks. The spectrum simulation testbed uses OPNET Modeler to model a dynamic spectrum manager (DSM) technique that uses geographic position and spectral use information to assign spectrum resources to ...
Eugene Pappas +3 more
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A quantitative assessment of wireless spectrum measurements for dynamic spectrum access
2009 4th International Conference on Cognitive Radio Oriented Wireless Networks and Communications, 2009In this paper, we provide a qualitative assessment of the spectrum usage across five geographically separated sites in four mid-size metropolitan centers located in the United States. Specifically, the variations in spectrum occupancy across space, time and frequency are investigated and compared between different sites within the city as well as with ...
Srikanth Pagadarai +1 more
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2015
We present another spectrum sharing architecture called dynamic spectrum co-access (DSCA), to enable secondary users to simultaneously access spectrum with primary users, to create a win-win situation for both. In this architecture, the secondary user uses a portion of its transmit power to provide incentives to primary users. Different from the IC-DSA
ChunSheng Xin, Min Song
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We present another spectrum sharing architecture called dynamic spectrum co-access (DSCA), to enable secondary users to simultaneously access spectrum with primary users, to create a win-win situation for both. In this architecture, the secondary user uses a portion of its transmit power to provide incentives to primary users. Different from the IC-DSA
ChunSheng Xin, Min Song
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Spectrum prediction in dynamic spectrum access systems
2018Despite the remarkable foreseen advancements in maximizing network capacities, the in-expansible nature of radio spectrum exposed outdated spectrum management techniques as a core limitation. Fixed spectrum allocation inefficiency has generated a proliferation of dynamic spectrum access solutions to accommodate the growing demand for wireless, and ...
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