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TWC
2008
118views more  TWC 2008»
13 years 10 months ago
Electromagnetic considerations for communicating on correlated MIMO channels with covariance information
Previous results for correlated block-fading MIMO channels with covariance information indicate guaranteed capacity growth with additional transmit elements and that in rapidly fa...
Jon W. Wallace, Michael A. Jensen
TWC
2008
143views more  TWC 2008»
13 years 10 months ago
Power-efficient wireless OFDMA using limited-rate feedback
Emerging applications involving low-cost wireless sensor networks motivate well optimization of multi-user orthogonal frequency-division multiple access (OFDMA) in the power-limite...
Antonio G. Marqués, Georgios B. Giannakis, ...
TWC
2008
84views more  TWC 2008»
13 years 10 months ago
Performance Analysis of OFDM Systems with Adaptive Sub Carrier Bandwidth
Orthogonal frequency division multiplexing based wireless systems are spectrally efficient, but they are vulnerable to inter carrier interference (ICI). In a wide area scenario, us...
Suvra Sekhar Das, Elisabeth de Carvalho, Ramjee Pr...
TWC
2008
109views more  TWC 2008»
13 years 10 months ago
Using the physical layer for wireless authentication in time-variant channels
Abstract--The wireless medium contains domain-specific information that can be used to complement and enhance traditional security mechanisms. In this paper we propose ways to expl...
Liang Xiao, Larry J. Greenstein, Narayan B. Manday...
TWC
2008
150views more  TWC 2008»
13 years 10 months ago
Convex approximation techniques for joint multiuser downlink beamforming and admission control
Multiuser downlink beamforming under quality of service (QoS) constraints has attracted considerable interest in recent years, because it is particularly appealing from a network o...
Evaggelia Matskani, Nicholas D. Sidiropoulos, Zhi-...