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TWC
2008
143views more  TWC 2008»
14 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
109views more  TWC 2008»
14 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...
FS
2010
105views more  FS 2010»
14 years 8 months ago
Local time and the pricing of time-dependent barrier options
Abstract A time-dependent double-barrier option is a derivative security that delivers the terminal value φ(ST ) at expiry T if neither of the continuous time-dependent barriers b...
Aleksandar Mijatovic
TCOM
2010
197views more  TCOM 2010»
14 years 8 months ago
Power control for cooperative dynamic spectrum access networks with diverse QoS constraints
Dynamic spectrum access (DSA) is an integral part of cognitive radio technology aiming at efficient management of the available power and bandwidth resources. The present paper d...
Nikolaos Gatsis, Antonio G. Marqués, Georgi...
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TKDE
2010
229views more  TKDE 2010»
14 years 8 months ago
Deriving Concept-Based User Profiles from Search Engine Logs
—User profiling is a fundamental component of any personalization applications. Most existing user profiling strategies are based on objects that users are interested in (i.e., p...
Kenneth Wai-Ting Leung, Dik Lun Lee