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CISS
2008
IEEE
14 years 2 days ago
Sum transmission power of multiple cooperative secondary transmitters in dynamic spectrum access networks
Cognitive radio is a desirable technique for secondary users to utilize the spectrum gray space. In order to avoid intolerable interference to primary users, the transmission powe...
Juite Hwu, Jinying Chen, Xiaohua Li
VTC
2007
IEEE
166views Communications» more  VTC 2007»
13 years 12 months ago
Analysis of Non-Saturation and Saturation Performance of IEEE 802.11 DCF in the Presence of Hidden Stations
—In this paper, we propose an analytical model to evaluate the hidden station effect on both non-saturation and saturation performance of the IEEE 802.11 Distributed Coordination...
Fu-Yi Hung, Ivan Marsic
ICASSP
2011
IEEE
12 years 9 months ago
Distributed multiaccess in hierarchical cognitive radio networks
The problem of distributed multiuser medium access of a hierarchical cognitive radio network with multiple primary and secondary users is considered. Each primary user has a licen...
Shiyao Chen, Lang Tong
ISCC
2009
IEEE
250views Communications» more  ISCC 2009»
14 years 9 days ago
Access point-coordinated contention resolution for channel access in wireless LANs
MAHBOOB, AHMED M. Access Point-Coordinated Contention Resolution for Channel Access in Wireless LANs. (Under the direction of Assistant Professor Khaled A. Harfoush.) The most wid...
Ahmed M. Mahboob, Manjunath M. Prabhu, Khaled A. H...
ICASSP
2011
IEEE
12 years 9 months ago
Optimal transmission strategies for channel capture mitigation in Cognitive Radio Networks
Abstract—Temporal Dynamic Spectrum Access (DSA) in Cognitive Radio Networks exploits time gaps between the primary users transmissions. In this work, the fundamental performance ...
Yingxi Liu, Nikhil Kundargi, Ahmed H. Tewfik