132 search results - page 15 / 27 » Optimal Competitive Algorithms for Opportunistic Spectrum Ac... |
ESA
2001
Springer
14 years 8 min ago
2001
Springer
Suppose that a program makes a sequence of m accesses (references) to data blocks, the cache can hold k < m blocks, an access to a block in the cache incurs one time unit, and ...
INFOCOM
2012
IEEE
11 years 10 months ago
2012
IEEE
Abstract—Opportunistic wireless channel access by nonlicensed users has emerged as a promising solution for addressing the bandwidth scarcity challenge. Auctions represent a natu...
CORR
2010
Springer
13 years 7 months ago
2010
Springer
Abstract-Recently, the duality between Multiple Input Multiple Output (MIMO) Multiple Access Channels (MAC) and MIMO Broadcast Channels (BC) has been established under a total powe...
CDC
2008
IEEE
14 years 2 months ago
2008
IEEE
—We study the problem of dynamic spectrum sensing and access in cognitive radio systems as a partially observed Markov decision process (POMDP). A group of cognitive users cooper...
GLOBECOM
2008
IEEE
13 years 8 months ago
2008
IEEE
—Conflict free spectrum allocation for secondary users in cognitive networks is a challenging problem, since the accessible spectrum is shared among users. The problem becomes to...