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» Interference Reduction by Beamforming in Cognitive Networks
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GLOBECOM
2008
IEEE
13 years 10 months ago
Interference Reduction by Beamforming in Cognitive Networks
— We consider beamforming in a cognitive network with multiple primary users and secondary users sharing the same spectrum. In particular, we assume that each secondary transmitt...
Simon Yiu, Mai Vu, Vahid Tarokh
TWC
2008
188views more  TWC 2008»
13 years 4 months ago
Joint power control and beamforming for cognitive radio networks
We consider a secondary usage of spectrum scenario where a secondary network coexists and/or shares the radio spectrum with a primary network to which the spectrum is licensed. The...
Habibul Islam, Ying-Chang Liang, Anh Tuan Hoang
TSP
2010
12 years 11 months ago
Beamforming and rate allocation in MISO cognitive radio networks
We consider decentralized multiantenna cognitive radio networks where the secondary (cognitive) users are granted simultaneous spectrum access along with the license-holding (prima...
Ali Tajer, Narayan Prasad, Xiaodong Wang
JSAC
2008
151views more  JSAC 2008»
13 years 4 months ago
Joint Beamforming and Power Allocation for Multiple Access Channels in Cognitive Radio Networks
A cognitive radio (CR) network is often described as a secondary network operating in a frequency band originally licensed/allocated to a primary network consisting of one or multi...
Lan Zhang, Ying-Chang Liang, Yan Xin
ICASSP
2011
IEEE
12 years 8 months ago
Robust secondary multicast transmit beamforming for cognitive radio networks under imperfect channel state information
Consider a robust downlink beamforming optimization problem for secondary multicast transmission in a multiple-input multiple-output (MIMO) spectrum sharing cognitive radio (CR) n...
Yongwei Huang, Qiang Li, Wing-Kin Ma, Shuzhong Zha...