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ICC
2007
IEEE
14 years 3 months ago
Energy and Utility Optimization in Wireless Networks with Random Access
— Energy consumption is a main issue of concern in wireless networks. Energy minimization increases the time that networks’ nodes work properly without recharging or substituti...
Amir Mahdi Khodaian, Babak Hossein Khalaj
TSP
2008
118views more  TSP 2008»
13 years 8 months ago
Channel-Aware Random Access Control for Distributed Estimation in Sensor Networks
A cross-layered slotted ALOHA protocol is proposed and analyzed for distributed estimation in sensor networks. Suppose that the sensors in the network record local measurements of ...
Y.-W. P. Hong, Keng-U Lei, Chong-Yung Chi
ICASSP
2009
IEEE
14 years 3 months ago
Beacon-assisted spectrum access with cooperative cognitive transmitter and receiver
—Spectrum access is an important function of cognitive radios for detecting and utilizing spectrum holes without harming the legacy systems. In this paper, we propose novel coope...
Ali Tajer, Xiaodong Wang
TIT
2008
95views more  TIT 2008»
13 years 8 months ago
On the Delay and Throughput Gains of Coding in Unreliable Networks
In an unreliable packet network setting, we study the performance gains of optimal transmission strategies in the presence and absence of coding capability at the transmitter, wher...
Atilla Eryilmaz, Asuman E. Ozdaglar, Muriel M&eacu...
ICC
2009
IEEE
121views Communications» more  ICC 2009»
13 years 6 months ago
Cooperative Cognitive Radio with Priority Queueing Analysis
In this paper, we model the hierarchical structures inherent in cognitive radio networks as the priority queueing system in which primary users interact with the highest priority a...
Caoxie Zhang, Xinbing Wang, Jun Li