7380 search results - page 175 / 1476 » time 2008 |
192
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FOCS
2008
IEEE
16 years 28 days ago
2008
IEEE
We present a technique for transforming classical approximation algorithms into constant-time algorithms that approximate the size of the optimal solution. Our technique is applic...
176
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GLOBECOM
2008
IEEE
16 years 28 days ago
2008
IEEE
— Recently, a maximum likelihood (ML) detection rule for differential unitary space time modulation (DUSTM) under the existence of unknown carrier frequency offset (CFO) has been...
156
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GLOBECOM
2008
IEEE
16 years 28 days ago
2008
IEEE
— Accurate detection of spectrum opportunities within the frequency band of an orthogonal frequency division multiple access (OFDMA) system is a critical requirement for the real...
202
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ICC
2008
IEEE
16 years 28 days ago
2008
IEEE
—It is not possible to ensure that a network is absolutely secure. Therefore, network operators must continually change their defense strategies to counter attackers who constant...
175
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ICDM
2008
IEEE
16 years 27 days ago
2008
IEEE
How do real, weighted graphs change over time? What patterns, if any, do they obey? Earlier studies focus on unweighted graphs, and, with few exceptions, they focus on static snap...