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» Interference in a Cognitive Network with Beacon
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TWC
2008
159views more  TWC 2008»
14 years 11 months ago
Resource allocation for spectrum underlay in cognitive radio networks
A resource allocation framework is presented for spectrum underlay in cognitive radio networks. We consider both interference constraints for primary users and quality of service (...
Long Bao Le, Ekram Hossain
TCOM
2010
119views more  TCOM 2010»
14 years 10 months ago
Optimization of OFDMA-Based Cellular Cognitive Radio Networks
Abstract— In this paper, we study the coexistence and optimization of a multicell cognitive radio network (CRN) which is overlaid with a multicell primary radio network (PRN). We...
Yao Ma, Dong In Kim, Zhiqiang Wu
CORR
2010
Springer
248views Education» more  CORR 2010»
14 years 11 months ago
Optimal Spectrum Sharing in MIMO Cognitive Radio Networks via Semidefinite Programming
Abstract--In cognitive radio (CR) networks with multipleinput multiple-output (MIMO) links, secondary users (SUs) can exploit "spectrum holes" in the space domain to acce...
Ying Jun Zhang, Anthony Man-Cho So
WCNC
2008
IEEE
15 years 6 months ago
Sidelobe Suppression for OFDM-Based Cognitive Radios Using Constellation Expansion
— In this paper, we present a novel algorithm for reducing sidelobe interference power levels in OFDM-based cognitive radios. Existing techniques for sidelobe suppression can be ...
Srikanth Pagadarai, Rakesh Rajbanshi, Alexander M....
122
Voted
WCNC
2010
IEEE
14 years 10 months ago
Sensing and Communication Tradeoff for Cognitive Access of Continues-Time Markov Channels
—Dynamic spectrum access (DSA) aims to improve spectrum efficiency via spectrum sensing and optimal spectrum access. An essential component in DSA is the joint design of sensing...
Xin Li, Qianchuan Zhao, Xiaohong Guan, Lang Tong