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127
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FOCS
2008
IEEE
15 years 11 months ago
2008
IEEE
What is the least surface area of a shape that tiles Rd under translations by Zd ? Any such shape must have volume 1 and hence surface area at least that of the volume-1 ball, nam...
133
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FOCS
2008
IEEE
15 years 11 months ago
2008
IEEE
We introduce several generalizations of classical computer science problems obtained by replacing simpler objective functions with general submodular functions. The new problems i...
161
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GLOBECOM
2008
IEEE
15 years 11 months ago
2008
IEEE
—In sensor networks, both energy and bandwidth are scarce resources. In the past, many energy efficient routing algorithms have been devised in order to maximize network lifetim...
126
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GLOBECOM
2008
IEEE
15 years 11 months ago
2008
IEEE
—In this paper we propose a model to compute an upper bound for the maximum network size in mobile ad-hoc networks. Our model is based on the foundation that for a unicast route ...
137
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GLOBECOM
2008
IEEE
15 years 11 months ago
2008
IEEE
— In this paper, we propose multiuser multiple-input multiple-ouput (MIMO) one- and two-way relaying protocols. Several wireless MIMO node pairs are establishing either unidirect...