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TWC
2010
10 years 5 months ago
Efficient Spectrum Leasing via Randomized Silencing of Secondary Users
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...
Rocco Di Taranto, Petar Popovski, Osvaldo Simeone,...
ICUMT
2009
10 years 8 months ago
Cooperative robust sequential detection algorithms for Spectrum Sensing in Cognitive Radio
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...
ArunKumar Jayaprakasam, Vinod Sharma
GLOBECOM
2009
IEEE
10 years 8 months ago
Optimizing Training-Based Transmission for Correlated MIMO Systems with Hybrid Feedback
Abstract--In this paper, we consider multiple-input multipleoutput (MIMO) communication systems with combined channel covariance feedback (CCF) and channel gain feedback (CGF), her...
Xiangyun Zhou, Tharaka A. Lamahewa, Parastoo Sadeg...
CORR
2008
Springer
112views Education» more  CORR 2008»
10 years 10 months ago
Diversity-Multiplexing Tradeoff of the Half-Duplex Relay Channel
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...
Sameer Pawar, Amir Salman Avestimehr, David N. C. ...
INFOCOM
2003
IEEE
11 years 3 months ago
Exploiting Multiuser Diversity for Medium Access Control in Wireless Networks
— 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...
Xiangping Qin, Randall A. Berry
WOWMOM
2009
ACM
158views Multimedia» more  WOWMOM 2009»
11 years 5 months ago
Admission control based on OFDMA channel transformations
It is well known that channel-dependent OFDMA resource assignment algorithms provide a significant performance improvement compared to static (i.e. channelunaware) approaches. Su...
James Gross
books