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TWC
2010
9 years 6 months ago
Temporal Spectrum Sharing Based on Primary User Activity Prediction
Abstract--In this paper we investigate the opportunistic spectrum access in temporal domain where a secondary user shares a radio channel with a primary user during the OFF period ...
Ki Won Sung, Seong-Lyun Kim, Jens Zander
ICC
2009
IEEE
121views Communications» more  ICC 2009»
9 years 9 months ago
Cooperative Cognitive Radio with Priority Queueing Analysis
In this paper, we model the hierarchical structures inherent in cognitive radio networks as the priority queueing system in which primary users interact with the highest priority a...
Caoxie Zhang, Xinbing Wang, Jun Li
PIMRC
2010
IEEE
9 years 9 months ago
Identifying boundaries of dominant regions dictating spectrum sharing opportunities for large secondary networks
An important parameter in determining a spectrum sharing opportunity is the level of interference power that secondary users may generate towards primary users. It is indicated in ...
Muhammad Aljuaid, Halim Yanikomeroglu
IMC
2010
ACM
9 years 9 months ago
On the feasibility of effective opportunistic spectrum access
Dynamic spectrum access networks are designed to allow today's bandwidth hungry "secondary devices" to share spectrum allocated to legacy devices, or "primary ...
Vinod Kone, Lei Yang, Xue Yang, Ben Y. Zhao, Haita...
WIOPT
2010
IEEE
9 years 10 months ago
A contracts-based approach for spectrum sharing among cognitive radios
Abstract—Development of dynamic spectrum access and allocation techniques recently have made feasible the vision of cognitive radio systems. However, a fundamental question arise...
Dileep M. Kalathil, Rahul Jain
INFOCOM
2010
IEEE
9 years 10 months ago
Queuing Analysis in Multichannel Cognitive Spectrum Access: A Large Deviation Approach
Abstract—The queueing performance of a (secondary) cognitive user is investigated for a hierarchical network where there are N independent and identical primary users. Each prima...
Amine Laourine, Shiyao Chen, Lang Tong
ICASSP
2010
IEEE
9 years 11 months ago
Collaborative spectrum sensing from sparse observations using matrix completion for cognitive radio networks
— In cognitive radio, spectrum sensing is a key component to detect spectrum holes (i.e., channels not used by any primary users). Collaborative spectrum sensing among the cognit...
Jia Meng, Wotao Yin, Husheng Li, Ekram Hossain, Zh...
WCNC
2010
IEEE
10 years 3 months ago
Credit-Based Spectrum Sharing for Cognitive Mobile Multihop Relay Networks
Abstract—In cognitive mobile multihop relay (CMMR) network, the mobile user as the primary user is allocated with the channel for transmitting data. Relay station as the secondar...
Dusit Niyato, Ping Wang
WCNC
2008
IEEE
10 years 6 months ago
Interference in a Cognitive Network with Beacon
—We study a cognitive network consisting of multiple cognitive users communicating in the presence of a single primary user. The primary user is located at the center of the netw...
Mai Vu, Saeed S. Ghassemzadeh, Vahid Tarokh
WCNC
2008
IEEE
10 years 6 months ago
An Analytical Performance Model of Opportunistic Spectrum Access in a Military Environment
— In an opportunistic spectrum sharing system, secondary users equipped with cognitive radios opportunistically access spectrum that is not being used by the primary users, i.e.,...
Shensheng Tang, Brian L. Mark
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