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TMC
2011
137views more  TMC 2011»
8 years 10 months ago
Cognitive Medium Access: Exploration, Exploitation, and Competition
— This paper establishes the equivalence between cognitive medium access and the competitive multi-armed bandit problem. First, the scenario in which a single cognitive user wish...
Lifeng Lai, Hesham El Gamal, Hai Jiang, H. Vincent...
JSAC
2011
82views more  JSAC 2011»
8 years 10 months ago
Optimal Cognitive Access of Markovian Channels under Tight Collision Constraints
Abstract—The problem of cognitive access of channels of primary users by a secondary user is considered. The transmissions of primary users are modeled as independent continuous-...
Xin Li, Qianchuan Zhao, Xiaohong Guan, Lang Tong
INFOCOM
2010
IEEE
9 years 2 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
CORR
2008
Springer
73views Education» more  CORR 2008»
9 years 3 months ago
A Spectrum-Shaping Perspective on Cognitive Radio
A new perspective on cognitive radio is presented for the case where the primary transmission is in uncoded analog form. The basic idea is to exploit signal-to-noise ratio margins ...
Wenyi Zhang, Urbashi Mitra
ICC
2007
IEEE
168views Communications» more  ICC 2007»
9 years 7 months ago
Analysis and Optimization of Power Control in Multiuser Cognitive Wireless Networks
In this paper, the problem about power control in multiuser cognitive networks is addressed. The scenario we study is a heterogeneous network, where multiple cognitive (without the...
Peng Cheng, Guanding Yu, Zhaoyang Zhang, Peiliang ...
GLOBECOM
2009
IEEE
9 years 10 months ago
Capacity Impact of Location-Aware Cognitive Sensing
— We study Bayesian detection based cognitive sensing and analyze its impact on the capacity in various cases of location information. In a network of one primary and one cogniti...
Peng Jia, Mai Vu, Tho Le-Ngoc
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