170 search results - page 29 / 34 » Cognitive Transmissions with Multiple Relays in Cognitive Ra... |
TWC
2010
14 years 4 months ago
2010
Cooperative forwarding in wireless networks has shown to yield rate and diversity gains, but it incurs energy costs borne by the cooperating nodes. In this paper we consider an inc...
101
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WOWMOM
2009
ACM
15 years 3 months ago
2009
ACM
Abstract— Spectrum-agile radios, also known as cognitive radios, have a great potential to improve spectrum utilization by enabling dynamic access to the spectrum. A key challeng...
111
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INFOCOM
2012
IEEE
12 years 12 months ago
2012
IEEE
Cognitive radio gives users the ability to switch channels and make use of dynamic spectral opportunities. However, switching channels takes time, and may disrupt the quality of a...
ICC
2007
IEEE
15 years 3 months ago
2007
IEEE
— For cognitive radio networks, a popular approach to dynamic spectrum allocation (DSA) is game theoretic, which improves spectrum efficiency in a distributed manner. In a doubl...
ICASSP
2011
IEEE
14 years 1 months ago
2011
IEEE
This paper considers the problem of finding sparse solutions from multiple measurement vectors (MMVs) with joint sparsity. The solutions share the same sparsity structure, and th...