103
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TWC
2010
14 years 4 months ago
2010
In this paper, a primary (licensed) user leases part of its resources to independent secondary (unlicensed) terminals in exchange for a tariff in dollars per bit, under the constra...
108
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ICUMT
2009
14 years 7 months ago
2009
Abstract-- We consider the problem of Spectrum Sensing in Cognitive Radio Networks. In our previous work we have developed DualCUSUM, a distributed algorithm for change detection a...
106
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GLOBECOM
2009
IEEE
14 years 7 months ago
2009
IEEE
Abstract--In this paper, we consider multiple-input multipleoutput (MIMO) communication systems with combined channel covariance feedback (CCF) and channel gain feedback (CGF), her...
CORR
2008
Springer
14 years 10 months ago
2008
Springer
We show that the diversity-multiplexing tradeoff of a half-duplex single-relay channel with identically distributed Rayleigh fading channel gains meets the 2 by 1 MISO bound. We ge...
INFOCOM
2003
IEEE
15 years 3 months ago
2003
IEEE
— Multiuser diversity refers to a type of diversity present across different users in a fading environment. This diversity can be exploited by scheduling transmissions so that us...
WOWMOM
2009
ACM
15 years 4 months ago
2009
ACM
It is well known that channel-dependent OFDMA resource assignment algorithms provide a significant performance improvement compared to static (i.e. channelunaware) approaches. Su...