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INFOCOM
2005
IEEE
14 years 2 months ago
Power aware routing for sensor databases
— Wireless sensor networks offer the potential to span and monitor large geographical areas inexpensively. Sensor network databases like TinyDB [1] are the dominant architectures...
Chiranjeeb Buragohain, Divyakant Agrawal, Subhash ...
ADHOCNETS
2009
Springer
14 years 3 months ago
Improved Topology Control Algorithms for Simple Mobile Networks
Topology control is the problem of assigning powers to the nodes of an ad hoc network so as to create a specified network topology while minimizing the energy consumed by the netw...
Fei Che, Errol L. Lloyd, Liang Zhao
ESA
2007
Springer
150views Algorithms» more  ESA 2007»
14 years 2 months ago
On the Complexity of Sequential Rectangle Placement in IEEE 802.16/WiMAX Systems
We study the problem of scheduling transmissions on the downlink of IEEE 802.16/WiMAX systems that use the OFDMA technology. These transmissions are scheduled using a matrix whose...
Amos Israeli, Dror Rawitz, Oran Sharon
FSTTCS
2010
Springer
13 years 6 months ago
Finding Independent Sets in Unions of Perfect Graphs
ABSTRACT. The maximum independent set problem (MAXIS) on general graphs is known to be NPhard to approximate within a factor of n1-, for any > 0. However, there are many "...
Venkatesan T. Chakaravarthy, Vinayaka Pandit, Samb...
ICASSP
2009
IEEE
14 years 3 months ago
On the performance of semidefinite relaxation MIMO detectors for QAM constellations
Due to their computational efficiency and strong empirical performance, semidefinite relaxation (SDR)–based algorithms have gained much attention in multiple–input multiple...
Anthony Man-Cho So