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ICC
2007
IEEE
121views Communications» more  ICC 2007»
15 years 6 months ago
Alternative Symbol Representations with Radial Symmetry for PAPR Reduction in OFDM Systems
— This paper proposes a new method for peak to average power ratio (PAPR) reduction in orthogonal frequency division multiplexing (OFDM) systems using two alternative signalling ...
Ali Al-Shaikhi, Jacek Ilow
JACM
2008
90views more  JACM 2008»
14 years 11 months ago
Bit complexity of breaking and achieving symmetry in chains and rings
We consider a failure-free, asynchronous message passing network with n links, where the processors are arranged on a ring or a chain. The processors are identically programmed bu...
Yefim Dinitz, Shlomo Moran, Sergio Rajsbaum
MICCAI
1999
Springer
15 years 4 months ago
Image Processing for Diffusion Tensor Magnetic Resonance Imaging
This paper1 describes image processing techniques for Diffusion Tensor Magnetic Resonance. In Diffusion Tensor MRI, a tensor describing local water diffusion is acquired for each v...
Carl-Fredrik Westin, S. E. Maier, B. Khidhir, Pete...
AUTOID
2005
IEEE
15 years 5 months ago
Fully Automated Facial Symmetry Axis Detection in Frontal Color Images
In this paper, we consider the problem of automatically detecting a facial symmetry axis in what we will call a standard human face image (acquired when the subject is looking dir...
Xin Chen, Patrick J. Flynn, Kevin W. Bowyer
FOCS
2009
IEEE
15 years 6 months ago
Symmetry and Approximability of Submodular Maximization Problems
Abstract— A number of recent results on optimization problems involving submodular functions have made use of the ”multilinear relaxation” of the problem [3], [8], [24], [14]...
Jan Vondrák