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» Some Results on the Modelling of Spatial Data
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VTC
2007
IEEE
105views Communications» more  VTC 2007»
14 years 3 months ago
Random Beamforming OFDMA for Future Generation Cellular Communication Systems
—This paper presents a downlink performance analysis of a Layered Random Beamforming (LRB) - MIMO-OFDMA Physical Layer (PHY) as applicable to future generation wireless communica...
Congzheng Han, Angela Doufexi, Simon Armour, Joe M...
WMCSA
2008
IEEE
14 years 3 months ago
Location-based trust for mobile user-generated content: applications, challenges and implementations
The recent explosion in shared media content and sensed data produced by mobile end-users is challenging well-established principles and assumptions in data trust models. A fundam...
Vincent Lenders, Emmanouil Koukoumidis, Pei Zhang,...
ICDE
2008
IEEE
139views Database» more  ICDE 2008»
14 years 10 months ago
Simultaneous Equation Systems for Query Processing on Continuous-Time Data Streams
We introduce Pulse, a framework for processing continuous queries over models of continuous-time data, which can compactly and accurately represent many real-world activities and p...
Jennie Rogers, Olga Papaemmanouil, Ugur Çet...
ICDCS
2003
IEEE
14 years 2 months ago
Collision Avoidance in Single-Channel Ad Hoc Networks Using Directional Antennas
Three collision-avoidance protocols are analyzed that use omni-directional packet reception together with omnidirectional transmissions, directional transmissions, or a combinatio...
Yu Wang, J. J. Garcia-Luna-Aceves
ISBI
2007
IEEE
14 years 3 months ago
A Fractal Multi-Dimensional Ultrasound Scatterer Distribution Model
This paper presents a multi-dimensional point scatterer distribution model for the context of ultrasound image simulation. The model has a simple parameterisation, has low computa...
Catherine Laporte, James J. Clark, Tal Arbel