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TVCG
2008
138views more  TVCG 2008»
15 years 6 months ago
Real-Time Path Planning in Dynamic Virtual Environments Using Multiagent Navigation Graphs
We present a novel approach for efficient path planning and navigation of multiple virtual agents in complex dynamic scenes. We introduce a new data structure, Multiagent Navigatio...
Avneesh Sud, Erik Andersen, Sean Curtis, Ming C. L...
TWC
2008
150views more  TWC 2008»
15 years 6 months ago
Combining Beamforming and Space-Time Coding Using Quantized Feedback
We combine space-time coding and transmit beamforming over multiple-antenna quasi-static fading channels using resolution-constrained channel state information at the transmitter ...
Siavash Ekbatani, Hamid Jafarkhani
TWC
2008
150views more  TWC 2008»
15 years 6 months ago
Improved iterative detection and achieved throughputs of OFDM systems under imperfect channel estimation
Abstract--Assuming imperfect channel estimation, we propose an improved detector for orthogonal frequency-division multiplexing (OFDM) systems over a frequency-selective fading cha...
Seyed Mohammad Sajad Sadough, Pierre Duhamel
TWC
2008
139views more  TWC 2008»
15 years 6 months ago
Optimal and Suboptimal Power Allocation Schemes for OFDM-based Cognitive Radio Systems
In this paper, we investigate an optimal power loading algorithm for an OFDM-based cognitive radio (CR) system. The downlink transmission capacity of the CR user is thereby maximiz...
Gaurav Bansal, Md. Jahangir Hossain, Vijay K. Bhar...
VR
2008
IEEE
175views Virtual Reality» more  VR 2008»
15 years 6 months ago
Managing Visual Clutter: A Generalized Technique for Label Segregation using Stereoscopic Disparity
We present a new technique for managing visual clutter caused by overlapping labels in complex information displays. This technique, "label layering", utilizes stereosco...
Stephen Peterson, Magnus Axholt, Stephen R. Ellis
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