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TIT
2011
131views more  TIT 2011»
15 years 1 months ago
On the Hardness of Approximating the Network Coding Capacity
Abstract—This work addresses the computational complexity of achieving the capacity of a general network coding instance. We focus on the linear capacity, namely the capacity of ...
Michael Langberg, Alexander Sprintson
TIT
2011
127views more  TIT 2011»
15 years 1 months ago
Semiunitary Precoding for Spatially Correlated MIMO Channels
— The focus of this paper is on spatial precoding in correlated multi-antenna channels where the number of datastreams is adapted independent of the number of transmit antennas. ...
Vasanthan Raghavan, Akbar M. Sayeed, Venugopal V. ...
TOSN
2011
116views more  TOSN 2011»
15 years 1 months ago
A model framework for greedy routing in a sensor network with a stochastic power scheme
A stochastic model is formulated and analyzed to study the advancements of messages under greedy routing in a sensor network with a power-saving scheme. The aim of this model is g...
Holger Paul Keeler, Peter G. Taylor
TVCG
2011
126views more  TVCG 2011»
15 years 1 months ago
A Comparison of Gradient Estimation Methods for Volume Rendering on Unstructured Meshes
—This paper presents a study of gradient estimation methods for rendering unstructured-mesh volume data. Gradient estimation is necessary for rendering shaded isosurfaces and spe...
Carlos D. Correa, Robert Hero, Kwan-Liu Ma
CORR
2011
Springer
184views Education» more  CORR 2011»
15 years 1 months ago
Metamorphic Virus Variants Classification Using Opcode Frequency Histogram
Abstract- In order to prevent detection and evade signature-based scanning methods, which are normally exploited by antivirus softwares, metamorphic viruses use several various obf...
Babak Bashari Rad, Maslin Masrom
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