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SIAMSC
2008
179views more  SIAMSC 2008»
14 years 9 months ago
Multigrid Algorithms for Inverse Problems with Linear Parabolic PDE Constraints
Abstract. We present a multigrid algorithm for the solution of distributed parameter inverse problems constrained by variable-coefficient linear parabolic partial differential equa...
Santi S. Adavani, George Biros
TSP
2010
14 years 4 months ago
Improving wireless physical layer security via cooperating relays
Physical (PHY) layer security approaches for wireless communications can prevent eavesdropping without upper layer data encryption. However, they are hampered by wireless channel c...
Lun Dong, Zhu Han, Athina P. Petropulu, H. Vincent...
CONSTRAINTS
2008
138views more  CONSTRAINTS 2008»
14 years 10 months ago
Minimization of Locally Defined Submodular Functions by Optimal Soft Arc Consistency
Submodular function minimization is a polynomially-solvable combinatorial problem. Unfortunately the best known general-purpose algorithms have high-order polynomial time complexi...
Martin C. Cooper
ICC
2008
IEEE
175views Communications» more  ICC 2008»
15 years 4 months ago
Routing in Cooperative Wireless Networks with Mutual-Information Accumulation
Cooperation between the nodes of wireless multihop networks can increase communication reliability, reduce energy consumption, and decrease latency. The possible improvements are ...
Stark C. Draper, Lingjia Liu, Andreas F. Molisch, ...
INFOCOM
2003
IEEE
15 years 3 months ago
Cooperation in Wireless Ad Hoc Networks
— In wireless ad hoc networks, nodes communicate with far off destinations using intermediate nodes as relays. Since wireless nodes are energy constrained, it may not be in the b...
Vikram Srinivasan, Pavan Nuggehalli, Carla-Fabiana...