29908 search results - page 300 / 5982 » On the Complexity of |
179
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JSAC
2008
15 years 6 months ago
2008
Abstract--Optimal tone allocation in downlink OFDMA networks is a non-convex NP-hard problem that requires extensive feedback for channel information. In this paper, two constantco...
183
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SIAMCOMP
2008
15 years 6 months ago
2008
XML specifications often consist of a type definition (typically, a DTD) and a set of integrity constraints. It has been shown previously that such specifications can be inconsiste...
210
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IJCSA
2007
15 years 6 months ago
2007
The Rhagoletis pomonella species complex consists of at least four sibling species. They are highly host specific as larvae, and display great fidelity as adults. The only certain...
188
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AICOM
2005
2005
The Ants' Garden: Complex interactions between populations and the scalability of qualitative models
15 years 6 months ago
Ecological theories often explain the behaviour of communities in terms of the underlying interactions that take place between the species that are part of the community. This clos...
190
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TCOM
2008
15 years 6 months ago
2008
Abstract In multiuser MIMO systems, the base station schedules transmissions to a group of users simultaneously. Since the data transmitted to each user are different, in order to ...