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JCM
2006
124views more  JCM 2006»
8 years 8 months ago
Policy Defined Spectrum sharing and medium Access for Cognitive Radios
Spectrum regulation will undergo elementary changes in the near future allowing a less restricted and more flexible access to radio spectrum. Intelligent radios, socalled cognitive...
Lars Berlemann, Stefan Mangold, Guido R. Hiertz, B...
JSAC
2008
135views more  JSAC 2008»
8 years 8 months ago
Multi-Stage Pricing Game for Collusion-Resistant Dynamic Spectrum Allocation
In order to fully utilize scarce spectrum resources, dynamic spectrum allocation becomes a promising approach to increase the spectrum efficiency for wireless networks. However, th...
Zhu Ji, K. J. Ray Liu
JSAC
2008
161views more  JSAC 2008»
8 years 8 months ago
HC-MAC: A Hardware-Constrained Cognitive MAC for Efficient Spectrum Management
Abstract--Radio spectrum resource is of fundamental importance for wireless communication. Recent reports show that most available spectrum has been allocated. While some of the sp...
Juncheng Jia, Qian Zhang, Xuemin Shen
JSAC
2008
199views more  JSAC 2008»
8 years 8 months ago
Defense against Primary User Emulation Attacks in Cognitive Radio Networks
Cognitive Radio (CR) is a promising technology that can alleviate the spectrum shortage problem by enabling unlicensed users equipped with CRs to coexist with incumbent users in li...
Ruiliang Chen, Jung Min Park, Jeffrey H. Reed
JSAC
2008
133views more  JSAC 2008»
8 years 8 months ago
Distributed Rule-Regulated Spectrum Sharing
Dynamic spectrum access is a promising technique to use spectrum efficiently. Without being restricted to any prefixed spectrum bands, nodes choose operating spectrum ondemand. Suc...
Lili Cao, Haitao Zheng
JAIR
2008
93views more  JAIR 2008»
8 years 8 months ago
Spectrum of Variable-Random Trees
In this paper, we show that a continuous spectrum of randomisation exists, in which most existing tree randomisations are only operating around the two ends of the spectrum. That ...
Fei Tony Liu, Kai Ming Ting, Yang Yu, Zhi-Hua Zhou
CN
2006
174views more  CN 2006»
8 years 8 months ago
NeXt generation/dynamic spectrum access/cognitive radio wireless networks: A survey
Today's wireless networks are characterized by a fixed spectrum assignment policy. However, a large portion of the assigned spectrum is used sporadically and geographical var...
Ian F. Akyildiz, Won-Yeol Lee, Mehmet C. Vuran, Sh...
CORR
2010
Springer
205views Education» more  CORR 2010»
8 years 8 months ago
Competition with Dynamic Spectrum Leasing
Dynamic spectrum leasing can greatly enhance the spectrum efficiency and encourage more flexible services in the spectrum market. This paper presents a detailed analytical study of...
Lingjie Duan, Jianwei Huang, Biying Shou
CN
2008
97views more  CN 2008»
8 years 8 months ago
Towards real-time dynamic spectrum auctions
In this paper, we propose a low-complexity auction framework to distribute spectrum in real-time among a large number of wireless users with dynamic traffic. Our design consists o...
Sorabh Gandhi, Chiranjeeb Buragohain, Lili Cao, Ha...
ICASSP
2010
IEEE
8 years 8 months ago
Adaptive spectrum sensing for agile cognitive radios
Vast segments of the frequency spectrum are licensed to specific users for particular applications. These legacy users, however, often under-utilize their designated spectrum seg...
Ali Tajer, Rui Castro, Xiaodong Wang
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