Exploració per autor "Lagunas Hernandez, Miguel A."
Ara es mostren els items 104-123 de 185
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Measuring true spectral density from ML filters (NMLM and q-NMLM spectral estimates)
(Institute of Electrical and Electronics Engineers (IEEE), 1984)
Text en actes de congrés
Accés obertStarting from the classical procedure reported by Capon for power level estimation from ML filters, the authors present how this method can be modifyed in order to obtain a power spectral density estimate. The basic idea ... -
Memoryless predistortion of nonlinear amplifiers based on Fourier series based models
(Institute of Electrical and Electronics Engineers (IEEE), 1996)
Text en actes de congrés
Accés obertIn order to maximise the efficiency of the RF amplifier located in a transmitter, for instance in both analog and digital terrestrial TV links, it is forced to work near saturation thus introducing an undesirable nonlinear ... -
Método MLNq para arrays de alta resolución
(Universidad de Sevilla, 1984)
Text en actes de congrés
Accés obertSpectral analysis techniques are used to bearing estimation problem. Each one of this gives a different array beamforming. We show here a generalized normalized Maximum Likehood Method which present a high resolution ... -
MIMO channel metrics
(2006)
Text en actes de congrés
Accés obertSpace diversity processing when suitable either at the transmitter side or at the receiver side provides a reduction on the transmitted power for the same received signal quality. The paper discusses the importance of ... -
MMSE Joint Detection in frequency-selective wireless communication channels for DS-CDMA systems
(Institute of Electrical and Electronics Engineers (IEEE), 2000)
Text en actes de congrés
Accés obertIn digital mobile communication systems, two important problems arise, namely multiple access interference (MAI) and intersymbol interference (ISI). An attractive solution is the use of code division multiple access (CDMA) ... -
Multibeam adaptive array
(1988)
Text en actes de congrés
Accés obertTo achieve adaptive multibeamforming to allow reconfiguration in SSW-TDMA satellite communications, a system for narrow band adaptive multibeamforming is described in this work. The signal processor allows an unconstrained ... -
Multichannel recovery of quadrature components of bandpass signals
(1982-11)
Article
Accés obert -
Multitone tracking with coupled EKFs and high order learning
(1992)
Text en actes de congrés
Accés obertA multitone tracker is described using two basic principles in optimum frequency estimation: processing bandwidth depending on the distance from the estimate to the actual frequency values, and parallel estimates with ... -
Multiuser array beamforming based on a neural network mapping
(1994)
Text en actes de congrés
Accés obertThis paper addresses the problem of simultaneous multiuser service. To find a feasible solution to the collision problem, two time reference multibeamformer systems are developed (BPSK TRMB and frequency framing TRMB). ... -
Neural nets filters: integrated coding and signaling in communication systems
(1989)
Text en actes de congrés
Accés obertThe authors describe the potential of neural net filters in communication systems. They consider applications of neural networks in those fields associated with communications where time-varying linear systems need to be ... -
Non-linear adaptive signal processor
(1987)
Text en actes de congrés
Accés obertThis paper is a first attempt to give formalism to non-linear system design and in which context, related with similar linear processing techniques, they are located. A summary on the relation-ship of linear objectives and ... -
Non-linear spectral estimation
(Institute of Electrical and Electronics Engineers (IEEE), 1987)
Text en actes de congrés
Accés obertThis work describes the use of constraints in variational procedures for spectral analysis. It is reported how the designer in a variational approach for spectral estimation has to select a set of constraints. At the same ... -
Nonlinear system inversion applied to random variable generation
(Institute of Electrical and Electronics Engineers (IEEE), 2000)
Text en actes de congrés
Accés obertA method to design random variable (RV) generators with the same probability density function (PDF) as a given RV record is presented. The resulting RV generator is a nonlinear system that when driven by a uniformly ... -
Open spectrum communication systems and optimized downlink beamforming
(2012)
Text en actes de congrés
Accés restringit per política de l'editorialThis paper addresses the problem of transmit beamforming in open spectrum communication systems. In these scenarios, the operator or the data communication provider delivers a set of base stations to the final users ... -
Optimal array combiner and sequence detector in mobile radio channels
(1998)
Text en actes de congrés
Accés obertThe use of spatial diversity at the receiver front-end together with a sequence detector implies a joint design problem of the spatial combiner and the sequence detector impulse response. This joint design is usually faced ... -
Optimal array combiner for sequence detectors
(1998)
Text en actes de congrés
Accés obertThe use of spatial diversity at the receiver front-end together with a sequence detector implies a joint design problem of the spatial combiner and the sequence detector impulse response. This joint design is usually faced ... -
Optimum self-reference spatial diversity processing for FDSS and FH communication systems
(Institute of Electrical and Electronics Engineers (IEEE), 2000)
Text en actes de congrés
Accés obertIn 1996, a new spread spectrum communication system, called Frequency Diversity Spread Spectrum (FDSS), was proposed as a system to mitigate the problems of the common spread spectrum techniques. In this paper, two blind ... -
Parametric envelope in LPC speech coders
(1985)
Text en actes de congrés
Accés obertDuring the last decade, many efforts have been devoted to the relative importance of associated functions like magnitude and phase of Fourier Transforms in image and signal bandwidth reduction. The reported work deals with ... -
Parametrización de la envolvente espectral
(Consejo Superior de Investigaciones Científicas (CSIC), 1986)
Text en actes de congrés
Accés obertA new variational ARMA power spectral estimation procedure is proposed which involves a rational modeling for the square of the spectral envelope. The non linear problem of solving the Lagrange multipliers which appears ... -
Parametrización en envolvente y fase en sistemas de codificación
(Fundación Universidad-Empresa, 1986)
Text en actes de congrés
Accés obertEn estos últimos años, se han dedicado muchos esfuerzos al estudio de funciones asociadas como el módulo y la fase de la Transformada de Fourier para reducción de ancho de banda. En este trabajo se estudia la importancia ...
