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MOBICOM
2009
ACM
16 years 1 months ago
Connectivity of cognitive radio networks: proximity vs. opportunity
We address the connectivity of large-scale ad hoc cognitive radio networks, where secondary users exploit channels temporarily and locally unused by primary users and the existenc...
Wei Ren, Qing Zhao, Ananthram Swami
ICC
2007
IEEE
162views Communications» more  ICC 2007»
16 years 1 months ago
An Asymptotically Sum-Rate Optimal Precoding Scheme for MIMO Gaussian Broadcast Channel
—In this paper, we study the downlink precoding schemes for MIMO Gaussian broadcast channels (MIMO GBC). A novel low-complexity zero-forcing dirty-paper-coding (DPC) scheme, name...
Hao Li, Changqing Xu, Pingzhi Fan
ICIP
2005
IEEE
16 years 8 months ago
Improving performance of interactive categorization of images using relevance feedback
When using relevance feedback for the interactive categorization of images, the strategy employed by the system to select images to be presented to the user is of paramount import...
Marin Ferecatu, Michel Crucianu, Nozha Boujemaa
CHI
2009
ACM
16 years 7 months ago
BubbleWrap: a textile-based electromagnetic haptic display
We are investigating actuators that are able to provide different types of haptic sensations and that can be wrapped around a wide range of surfaces and objects. Our first prototy...
Olivier Bau, Uros Petrevski, Wendy E. Mackay
CHI
2008
ACM
16 years 7 months ago
Implementing eye-based user-aware e-learning
We propose an e-learning scenario where eye tracking is exploited to get valuable data about user behavior. What we look at -- as well as how we do that -- can in fact be used to ...
Marco Porta