Browsing by Subject "Tractament del senyal"
Now showing items 1-20 of 431
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3D joint speaker position and orientation tracking with particle filters
(2014-01-29)
Article
Open AccessThis paper addresses the problem of three-dimensional speaker orientation estimation in a smart-room environment equipped with microphone arrays. A Bayesian approach is proposed to jointly track the location and orientation ... -
3D point cloud segmentation using a fully connected conditional random field
(Institute of Electrical and Electronics Engineers (IEEE), 2017)
Conference lecture
Restricted access - publisher's policyTraditional image segmentation methods working with low level image features are usually difficult to adapt to higher level tasks, such as object recognition and scene understanding. Object segmentation emerges as a new ... -
A bit more on the ability of adaptation of speech signals
(2013-03)
Article
Open AccessSome traditional digital signal processing techniques encompass enhancement, filtering, coding, compression, detection and recognition. Recently, it has been presented a new hypothesis of signal processing known as the ... -
A block adaptive pyramid coding system
(1988)
Conference report
Open AccessIn this paper we present a new block adaptive coding scheme which uses non-rectangular Laplacian Pyramid Algorithms. The proposed method JB adapted to the local image contents. The original image is broken into subimages ... -
A compact prototype of an FM-CW RADAR for biomedical applications
(Universitat Politècnica de Catalunya, 2021-01-02)
Bachelor thesis
Restricted access - confidentiality agreement -
A continuously adaptive vector predictive coder (AVPC) for speech encoding
(Institute of Electrical and Electronics Engineers (IEEE), 1986)
Conference report
Open AccessIn this work we present a waveform speech coding system including vector quantization. This system can be seen as a vector version of the scalar ADPCM speech coder. In such system the speech samples are grouped in vectors ... -
A general adaptive algorithm for nonGaussian source separation without any constraint
(1994)
Conference report
Open AccessThis paper deals with the blind source separation. The task consists in separating some independent and linearly mixed signals called sources. After some general remarks, the model is recalled and our approach based on the ... -
A LiDAR imaging system using temporal and polarization discrimination for turbid media
(2023)
Conference report
Restricted access - publisher's policyIn recent times, there has been a surge of interest in LiDAR imaging systems, particularly in outdoor terrestrial applications associated with computer vision. However, a significant hurdle preventing their widespread ... -
A linear transform for spectral estimation
(1981-10)
Article
Open Access -
A new approach to exploit channel power imbalance in distributed antenna systems with fiber fronthaul
(Institute of Electrical and Electronics Engineers (IEEE), 2017)
Conference report
Restricted access - publisher's policyCloud Modulation (CM) is a novel transmission method that mitigates the non-linear impairments introduced by the Radio-over-Fiber (RoF) links of a distributed antenna system. In CM, constant-envelope phase-modulated radio ... -
A new method for the acquisition of arterial pulse wave using self-mixing interferometry
(2014-11-01)
Article
Open AccessIn this paper we present a technique based on self-mixing interferometry as a method for the acquisition and reconstruction of the arterial pulse wave. A modification of the classic fringe counting reconstruction algorithm ... -
A new non-linear system for estimating and suppressing narrowband interference in PN spread spectrum modulation
(1998)
Conference report
Open AccessThis work develops a novel dynamic fuzzy logic system that, based on a fuzzy basis function expansion, successfully solves the non-linear problem of narrowband interference prediction and rejection in DS-SS. A fuzzy basis ... -
A non-data-aided SNR estimation technique for multilevel modulations exploiting signal cyclostationarity
(2010-11-01)
Article
Restricted access - publisher's policySignal-to-noise ratio (SNR) estimators of linear modulation schemes usually operate at one sample per symbol at the matched filter output. In this paper we propose a new method for estimating the SNR in the complex ... -
A non-rectangular pyramid coding system
(1988)
Conference report
Open AccessRectangular sampling lattices bave been extensively applied to image coding. Sampling is a fundamental orera.tion m image coding systems as a proper selection of the sampling lattice minimizes the physica support of the ... -
A nondata-aided SNR estimation technique for multilevel modulations exploiting signal cyclostationarity
(2010-11-01)
Article
Open AccessSignal-to-noise ratio (SNR) estimators of linear modulation schemes usually operate at one sample per symbol at the matched filter output. In this paper we propose a new method for estimating the SNR in the complex additive ... -
A novel formulation of independence detection based on the sample characteristic function
(Institute of Electrical and Electronics Engineers (IEEE), 2018)
Conference lecture
Open AccessA novel independence test for continuous random sequences is proposed in this paper. The test is based on seeking for coherence in a particular fixed-dimension feature space based on a uniform sampling of the sample ... -
A novel linear feature detector for SAR images
(2012-11-12)
Article
Open AccessA new linear feature detector for synthetic aperture radar (SAR) images is presented in this article by embedding a three-region filter into the wedgelet analysis framework. One of its main features is that it can detect ... -
A proof of de Bruijn identity based on generalized Price’s theorem
(Institute of Electrical and Electronics Engineers (IEEE), 2019)
Conference lecture
Open AccessThis paper shows that de Bruijn identity, which relates entropy with Fisher information, can be obtained as a particular case of an immediate generalization of Price’s theorem, which is a tool used in the analysis of ... -
A pulsed carrier recovery using a discrete conception of the PLL
(Institute of Electrical and Electronics Engineers (IEEE), 1992)
Conference report
Open AccessA bistatic radar system requires accurate synchronization between the transmitter and the remote receiver in order to achieve a correct coherent target detection and positioning. An unlinked receiver carrier phase/frequency ...
