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ICASSP
2011
IEEE
14 years 1 months ago
How many known symbols are required for linear channel estimation in OFDM?
Training sequences for estimation of channel parameters have been well designed under the condition that the number of the unknown channel parameters is not greater than the numbe...
Shuichi Ohno, Emmanuel Manasseh, Masayoshi Nakamot...
ICS
2010
Tsinghua U.
15 years 7 months ago
Market Equilibrium under Separable, Piecewise-Linear, Concave Utilities
We consider Fisher and Arrow-Debreu markets under additively-separable, piecewise-linear, concave utility functions, and obtain the following results: ? For both market models, if...
Vijay V. Vazirani, Mihalis Yannakakis
104
Voted
ICDM
2006
IEEE
183views Data Mining» more  ICDM 2006»
15 years 4 months ago
Accelerating Newton Optimization for Log-Linear Models through Feature Redundancy
— Log-linear models are widely used for labeling feature vectors and graphical models, typically to estimate robust conditional distributions in presence of a large number of pot...
Arpit Mathur, Soumen Chakrabarti
ICCV
2011
IEEE
13 years 10 months ago
Multi-hypothesis Motion Planning for Visual Object Tracking
In this paper, we propose a long-term motion model for visual object tracking. In crowded street scenes, persistent occlusions are a frequent challenge for tracking algorithm and ...
Haifeng Gong, Jack Sim, Maxim Likhachev, Jianbo Sh...
ICRA
2007
IEEE
132views Robotics» more  ICRA 2007»
15 years 4 months ago
Smooth Feedback for Car-Like Vehicles in Polygonal Environments
— We introduce a method for constructing provably safe smooth feedback laws for car-like robots in obstaclecluttered polygonal environments. The robot is taken to be a point with...
Stephen R. Lindemann, Steven M. LaValle