7380 search results - page 288 / 1476 » time 2008 |
160
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CN
2002
15 years 6 months ago
2002
We present a model for soft handoff in wireless cellular networks. In such networks, due to overlapping cells, handoffs are not instantaneous and multiple channels may be occupied...
142
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IEICET
2008
15 years 6 months ago
2008
Human interest in pictures dates back to 14,000 BC. Pictures can be drawn by hand or imaged by optical means. Over time pictures have changed from being rare and unique to ubiquit...
166
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JSAC
2008
15 years 6 months ago
2008
We propose in this work a single copy and multi-hop opportunistic routing scheme for sparse delay tolerant networks (DTNs). The scheme uses as only input the estimates of the avera...
134
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DAM
2006
15 years 6 months ago
2006
: In this paper we consider the edge ranking problem of weighted trees. We prove that a special instance of this problem, namely edge ranking of multitrees is NP-hard already for m...
171
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DISOPT
2008
15 years 6 months ago
2008
In this article we study a broad class of integer programming problems in variable dimension. We show that these so-termed n-fold integer programming problems are polynomial time ...