Sciweavers

ICASSP
2008
IEEE
14 years 2 months ago
Robust multiuser detection based on probability constrained optimization of the MMSE receiver
The performance of multiuser detection (MUD) algorithms for codedivision multiple-access (CDMA) systems depends on the accuracy of channel estimates. Such estimates are typically ...
Sergiy A. Vorobyov
ICASSP
2008
IEEE
14 years 2 months ago
Robust kernel density estimation
In this paper, we propose a method for robust kernel density estimation. We interpret a KDE with Gaussian kernel as the inner product between a mapped test point and the centroid ...
JooSeuk Kim, Clayton Scott
ICASSP
2008
IEEE
14 years 2 months ago
Power control in spectrum overlay networks: How to cross a multi-lane highway
—We consider power control in spectrum overlay networks (also referred to as opportunistic spectrum access) where secondary users identify and exploit instantaneous and local spe...
Wei Ren, Qing Zhao, Ashwin Swami
ICASSP
2008
IEEE
14 years 2 months ago
Reconstructing sparse signals from their zero crossings
Classical sampling records the signal level at pre-determined time instances, usually uniformly spaced. An alternative implicit sampling model is to record the timing of pre-deter...
Petros Boufounos, Richard G. Baraniuk
ICASSP
2008
IEEE
14 years 2 months ago
A weighted subspace approach for improving bagging performance
Bagging is an ensemble method that uses random resampling of a dataset to construct models. In classification scenarios, the random resampling procedure in bagging induces some c...
Qu-Tang Cai, Chun-Yi Peng, Chang-Shui Zhang
ICASSP
2008
IEEE
14 years 2 months ago
Iterative channel estimation and turbo equalization for time-varying OFDM systems
We develop a new receiver for orthogonal frequency division multiplexing (OFDM) systems in time-varying channels by embedding channel estimation in a low-complexity block turbo eq...
Kun Fang, Luca Rugini, Geert Leus
ICASSP
2008
IEEE
14 years 2 months ago
Blind channel shortening in OFDM system using nulltones and cyclic prefix
This paper considers the problem of blind channel shortening in OFDM systems. Standard OFDM systems use guard interval (GI) in form of cyclic prefix (CP) and nulltones (NT) redun...
Taoufik Ben Jabeur, Karim Abed-Meraim, Hatem Bouje...
ICASSP
2008
IEEE
14 years 2 months ago
A new class of lifting wavelet transform for guaranteeing losslessness of specific signals
This paper proposes a new class of lifting wavelet transform which can guarantee losslessness of specific signals, e.g. white balance. The 5/3 wavelet transform composed of two li...
Hitoshi Kiya, Masahiro Iwahashi, Osamu Watanabe
ICASSP
2008
IEEE
14 years 2 months ago
Generic and typical ranks of three-way arrays
The concept of tensor rank, introduced in the twenties, has been popularized at the beginning of the seventies. This has allowed to carry out Factor Analysis on arrays with more t...
Pierre Comon, Jos M. F. ten Berge