17329 search results - page 2997 / 3466 » Improved non-approximability results |
154
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JUCS
2007
15 years 7 months ago
2007
: Indexing video content is one of the most important problems in video databases. In this paper we present linear time and space algorithms for handling video metadata that repres...
175
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TWC
2008
15 years 7 months ago
2008
In this paper, real-time video transmission with quality of service (QoS) assurance over orthogonal frequency division multiplexing (OFDM) wireless systems is studied. Three quasi-...
237
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TWC
2008
15 years 7 months ago
2008
We propose cross-layer optimization frameworks for multihop wireless networks using cooperative diversity. These frameworks provide solutions to fundamental relaying problems of de...
161
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TWC
2008
15 years 7 months ago
2008
In this letter, we are concerned with adaptive ARQ techniques combined with backoff strategies that exploit the bursty nature of wireless links for improved energy savings. Specifi...
192
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TWC
2008
15 years 7 months ago
2008
In this paper, we consider a class of energy-aware routing algorithm that explicitly takes into account the connectivity of the remaining sensor network. In typical sensor network ...