Sciweavers

TSP
2008
100views more  TSP 2008»
13 years 11 months ago
Optimal Two-Stage Search for Sparse Targets Using Convex Criteria
We consider the problem of estimating and detecting sparse signals over a large area of an image or other medium. We introduce a novel cost function that captures the tradeoff bet...
Eran Bashan, Raviv Raich, Alfred O. Hero III
NPL
2008
63views more  NPL 2008»
13 years 11 months ago
New Routes from Minimal Approximation Error to Principal Components
We introduce two new methods of deriving the classical PCA in the framework of minimizing the mean square error upon performing a lower-dimensional approximation of the data. These...
Abhilash Alexander Miranda, Yann-Aël Le Borgn...
CORR
2008
Springer
109views Education» more  CORR 2008»
13 years 11 months ago
Reconstruction of Multidimensional Signals from Irregular Noisy Samples
We focus on a multidimensional field with uncorrelated spectrum, and study the quality of the reconstructed signal when the field samples are irregularly spaced and affected by in...
Alessandro Nordio, Carla-Fabiana Chiasserini, Eman...
ICMCS
2010
IEEE
213views Multimedia» more  ICMCS 2010»
13 years 11 months ago
Unified loop filter for high-performance video coding
In this paper, we propose a unified loop filter for highperformance video coding, which suppresses the quantization noise optimally and improves the objective and subjective qua...
Yu Liu, Yan Huo
IDEAL
2004
Springer
14 years 4 months ago
Orthogonal Least Square with Boosting for Regression
A novel technique is presented to construct sparse regression models based on the orthogonal least square method with boosting. This technique tunes the mean vector and diagonal c...
Sheng Chen, Xunxian Wang, David J. Brown
ISCAS
2006
IEEE
65views Hardware» more  ISCAS 2006»
14 years 5 months ago
Precoded V-BLAST for ISI MIMO channels
Abstract— The V-BLAST (vertical Bell labs layered spacetime) system is one of the MIMO systems designed to achieve a good multiplexing gain. In the recent literature, a V-BLAST p...
Chun-Yang Chen, P. P. Vaidyanathan
ICC
2007
IEEE
245views Communications» more  ICC 2007»
14 years 5 months ago
Low Complexity MMSE Vector Precoding Using Lattice Reduction for MIMO Systems
—In this paper, a lattice-reduction-aided (LRA) With such an approximation, the complexity of VP is greatly minimum mean square error (MMSE) vector precoding (VP) is reduced. pro...
Feng Liu, Ling-ge Jiang, Chen He
GLOBECOM
2007
IEEE
14 years 5 months ago
MIMO-OFDM Channel Estimation in Presence of Carrier Frequency Offsets
— Optimal pilot design and placement for channel estimation in Multiple-input Multiple-output (MIMO) Orthogonal Frequency-Division Multiplexing (OFDM) systems in the presence of ...
Zhongshan Zhang, Wei Zhang, Chintha Tellambura
GLOBECOM
2008
IEEE
14 years 6 months ago
On Channel Estimation and Capacity for Amplify and Forward Relay Networks
—Relay networks have received considerable attention recently, especially when limited size and power resources impose constraints on the number of antennas within a wireless sen...
Alireza Shahan Behbahani, Ahmed M. Eltawil