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CDC
2008
IEEE
197views Control Systems» more  CDC 2008»
14 years 2 months ago
Dynamic spectrum access policies for cognitive radio
—We study the problem of dynamic spectrum sensing and access in cognitive radio systems as a partially observed Markov decision process (POMDP). A group of cognitive users cooper...
Jayakrishnan Unnikrishnan, Venugopal V. Veeravalli
CORR
2010
Springer
83views Education» more  CORR 2010»
13 years 7 months ago
Utility Constrained Energy Minimization In Aloha Networks
In this paper we consider the issue of energy efficiency in random access networks and show that optimizing transmission probabilities of nodes can enhance network performance in t...
Amir Mahdi Khodaian, Babak Hossein Khalaj, Mohamma...
ICRA
2002
IEEE
92views Robotics» more  ICRA 2002»
14 years 21 days ago
Resolution Complete Rapidly-Exploring Random Trees
Trajectory design for high-dimensional systems with nonconvex constraints is a challenging problem considered in this paper. Classical dynamic programming is often employed, but c...
Peng Cheng, Steven M. LaValle
ICITS
2009
13 years 5 months ago
Linear Threshold Multisecret Sharing Schemes
In a multisecret sharing scheme, several secret values are distributed among a set of n users, and each secret may have a different associated access structure. We consider here un...
Oriol Farràs, Ignacio Gracia, Sebasti&agrav...
CIAC
1994
Springer
148views Algorithms» more  CIAC 1994»
13 years 12 months ago
Efficient Reorganization of Binary Search Trees
We consider the problem of maintaining a binary search tree (BST) that minimizes the average access cost needed to satisfy randomly generated requests. We analyze scenarios in whi...
Micha Hofri, Hadas Shachnai