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ICC
2007
IEEE
121views Communications» more  ICC 2007»
16 years 15 days 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»
15 years 6 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 10 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 11 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
16 years 28 days 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