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ICASSP
2009
IEEE
13 years 11 months ago
Joint estimation of short-term and long-term predictors in speech coders
In low bit-rate coders, the near-sample and far-sample redundancies of the speech signal are usually removed by a cascade of a shortterm and a long-term linear predictor. These tw...
Daniele Giacobello, Mads Græsbøll Chr...
ICASSP
2009
IEEE
13 years 11 months ago
Frequency invariant MVDR beamforming without filters and implementation using MIMO radar
Abstract-- Frequency invariant beamforming with sensor arrays is generally achieved using filters in the form of tapped delay-lines following each sensor. However it has been recen...
Piya Pal, P. P. Vaidyanathan
ICASSP
2009
IEEE
13 years 11 months ago
A MIMO channel perturbation analysis for robust bit loading
In narrowband multiple-input multiple-output (MIMO) communication systems, when the channel state information (CSI) is known perfectly at the transmitter and the receiver, techniq...
Michael D. Larsen, A. Lee Swindlehurst
ICASSP
2009
IEEE
13 years 11 months ago
Detection of sparse signals under finite-alphabet constraints
In this paper, we solve the problem of detecting the entries of a sparse finite-alphabet signal from a limited amount of data, for instance obtained by compressive sampling. While...
Zhi Tian, Geert Leus, Vincenzo Lottici
ICASSP
2009
IEEE
13 years 11 months ago
Blind noise variance estimation for OFDMA signals
In this paper, we present two new noise variance estimation methods of OFDMA signals transmitted through an unknown multipath fading channel. We focus on blind estimation as it do...
François-Xavier Socheleau, Dominique Pastor...