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TWC
2008
225views more  TWC 2008»
13 years 7 months ago
Joint rate and power allocation for cognitive radios in dynamic spectrum access environment
Abstract--We investigate the dynamic spectrum sharing problem among primary and secondary users in a cognitive radio network. We consider the scenario where primary users exhibit o...
Dong In Kim, Long Le, Ekram Hossain
ICASSP
2011
IEEE
12 years 11 months ago
Power allocation for orthogonal AF relay systems with outage-based QOS constraints
We consider the problem of minimizing the cost of the power required to achieve a specified level of quality-of-service (QoS) on a point-to-point link that may be assisted by an ...
Rooholah Hasanizadeh, Timothy N. Davidson
ICC
2007
IEEE
14 years 1 months ago
Introducing PHY-Layer Fairness in Amplify and Forward Cooperative Diversity Systems
Abstract— We introduce the concept of fairness at the physicallayer in amplify and forward cooperative diversity systems, which reflects the need for equally allocating the cons...
Diomidis S. Michalopoulos, George K. Karagiannidis...
ICASSP
2009
IEEE
13 years 11 months ago
A MIMO channel perturbation analysis for robust bit loading
In narrowband multiple-input multiple-output (MIMO) communication systems, when the channel state information (CSI) is known perfectly at the transmitter and the receiver, techniq...
Michael D. Larsen, A. Lee Swindlehurst
ICC
2009
IEEE
135views Communications» more  ICC 2009»
14 years 2 months ago
Completion Time Minimization and Robust Power Control in Wireless Packet Networks
A wireless packet network is considered in which each user transmits a stream of packets to its destination. The transmit power of each user interferes with the transmission of al...
Chris T. K. Ng, Muriel Médard, Asuman E. Oz...