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ICASSP
2008
IEEE
13 years 11 months ago
Power control in spectrum overlay networks: How to cross a multi-lane highway
—We consider power control in spectrum overlay networks (also referred to as opportunistic spectrum access) where secondary users identify and exploit instantaneous and local spe...
Wei Ren, Qing Zhao, Ashwin Swami
GLOBECOM
2008
IEEE
13 years 11 months ago
On Spectrum Sharing in Cooperative Multiple Access Networks
Abstract— The coexistence and resource sharing between a primary network utilizing cognitive relays and a secondary network are investigated. Two multiple access protocols are pr...
Amr El-Sherif, Ahmed K. Sadek, K. J. Ray Liu
TWC
2010
12 years 11 months ago
Efficient Dynamic Spectrum Sharing in Cognitive Radio Networks: Centralized Dynamic Spectrum Leasing (C-DSL)
In this paper, we propose the concept of centralized dynamic spectrum leasing (C-DSL), in which multiple primary users belonging to the same primary system participate in the spect...
K. Hakim, Sudharman K. Jayaweera, Georges El-Howay...
WCNC
2008
IEEE
13 years 11 months ago
Modeling an Opportunistic Spectrum Sharing System with a Correlated Arrival Process
— In an opportunistic spectrum sharing (OSS) wireless network there are two types of users: primary users and secondary users. The primary users own the license for the system ba...
Shensheng Tang, Brian L. Mark
MOBICOM
2009
ACM
13 years 11 months ago
Achievable throughput of multiple access spectrum systems based on cognitive relay
Cognitive relays form a special cooperation relationship among users in cognitive radio networks, and help increase the transmission rates of both primary users and secondary user...
Wei Wang, Baochun Li, Li Yu