Exploració per tema "Telecommunication"
Ara es mostren els items 1-20 de 1071
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1er. congreso estatal de ramas de estudiantes del IEEE
(Escola Tècnica Superior d'Enginyers de Telecomunicació de Barcelona, 1999)
Article
Accés obert -
25 anys de l'Escola Tècnica Superior d'Enginyeria de Telecomunicació de Barcelona
(Escola Tècnica Superior d'Enginyers de Telecomunicació de Barcelona, 1996)
Article
Accés obert -
62: Una herramienta interactiva para el estudio del tratamiento de la señal
(Universidad de las Palmas de Gran Canaria, 1994)
Text en actes de congrés
Accés obert -
A billingual texto-to-speech system in spanish and catalan
(Editors: G. Kokkinakis, N. Fakotakis, E. Dermatas; Editorial: WCL, University of Patras, Grece, 1997)
Text en actes de congrés
Accés obertThis paper summarises the text-to-speech system that has been developed during the last years in the Speech Group of the Universitat Politccnica de Catalunya (UPC). The paper emphasises the parts of the system which are ... -
A broadcast synthesized fm modulator with a radio data system encoder
(1996-06)
Article
Accés obertThe design and development of a broadcast FM modulator with a RDS (radio data system) encoder is presented. The system is fully coherent with the modulated RF frequency synthesized in the 875-108 MHz frequency band with ... -
A channel characterization technique for HF communications
(1985)
Text en actes de congrés
Accés obertA wideband channel sounder to characterize the HF radio channel is described. Based on a pseudorandom sequence technique it allows the measurement of the complex impulsional response of the channel with time and frequency ... -
A combined polling and ISMA-DS/CDMA protocol to provide QoS in packet mobile communications systems
(Institute of Electrical and Electronics Engineers (IEEE), 2000)
Text en actes de congrés
Accés obertThis paper presents a new mechanism that combines the flexibility of an access protocol such as ISMA-DS/CDMA with the ability of a polling mechanism to provide a specific bound for the access delay. This protocol is proposed ... -
A comparison of several recent methods of fundamental frequency and voicing decision estimation
(H. TIMOTHY BRUMMELL, WILLIAM IDSARDI CITATION DELAWARE, NEW CASTLE, DELAWARE, 1996)
Text en actes de congrés
Accés obertThe authors are interested in the comparison of several kinds of methods for fundamental frequency estimation and GCI (glottal closure instant) detection. These methods operate in various domains (time-, frequency- or joint ... -
A contour matching approach for accurate NOAA-AVHRR image navigation
(Eurasip, 2000)
Text en actes de congrés
Accés obertAlthough different methods for NOAA AVHRR image navigation have already been established, the multitemporal and multi-satellite character of most studies requires automatic and accurate methods for navigation of satellite ... -
A contribution to video coding using layers
(1998)
Text en actes de congrés
Accés obertLayered representations of video sequences, originally introduced in [1], are important in several applications. Specifically, they are very appropriate for object tracking, object manipulation, content-based scalability ... -
A cost function for the equalization of constant amplitude signals based on statistical reference
(1996)
Text en actes de congrés
Accés obertThe equalization of constant amplitude signals is considered in the scope of this paper. A criterion based on the probability density function (pdf) of the signal of interest is proposed. The objective is to derive a ... -
A direct-sequence spread-spectrum super-regenerative receiver
(Institute of Electrical and Electronics Engineers (IEEE), 2000)
Comunicació de congrés
Accés obertCurrent applications of the super-regenerative receiver use narrowband modulations. In this paper a new architecture that allows incoherent detection of spread-spectrum signals is presented. A pseudorandom code generator ... -
A discrete-time approach to the steady-state and stability analysis of distributed nonlinear autonomous circuits
(Institute of Electrical and Electronics Engineers (IEEE), 1998)
Text en actes de congrés
Accés obertWe present a direct method for the steady-state and stability analysis of autonomous circuits with transmission lines and generic nonlinear elements. With the discretization of the equations that describe the circuit in ... -
A discrete-time approach to the steady-state and stability analysis of distributed nonlinear autonomous circuits
(2000-02)
Article
Accés obertWe present a direct method for the steady-state and stability analysis of autonomous circuits with transmission lines and generic non- linear elements. With the discretization of the equations that describe the circuit ... -
A discrete-time equivalent system approach to the periodic response of nonlinear autonomous circuits
(1994)
Text en actes de congrés
Accés obertThe problem of computing the steady state response of nonlinear autonomous circuits is solved making use of a discrete-time equivalent system approach. With the application of an s-plane to z-plane mapping, the circuit ... -
A Flexible IP Active Network Architecture
(Springer, 2000)
Text en actes de congrés
Accés restringit per política de l'editorialThis paper presents the main concepts of the IST Project FAIN “Future Active IP Networks” [10], a three-year collaborative research project, whose main task is to develop and validate an open, flexible, programmable and ... -
A game of billiards with spatial solitary waves in ktp
(1996-03)
Article
Accés restringit per política de l'editorial -
A generic radio channel emulator to evaluate higher layer protocols in a CDMA system
(Institute of Electrical and Electronics Engineers (IEEE), 2000)
Text en actes de congrés
Accés obertCurrently, we are involved in the standardisation process to specify the next mobile system generation. A wideband code division multiple access (WCDMA) system is considered in most of the region versions. It would be very ... -
A hybrid-arq system for hf channels based on codeword partitioning
(1996-04)
Article
Accés obertA technique by which the codewords of an error-correcting code are partitioned to obtain an error-detecting code with half the original length is described. It is intended to be used in a hybrid-ARQ system for achieving ... -
A mobile controlled algorithm for improving the throughput in a s-aloha ds-cdma system
(Institute of Electrical and Electronics Engineers (IEEE), 1996)
Text en actes de congrés
Accés obertThis paper presents a novel adaptive DS-CDMA slotted-ALOHA packet random access scheme with transmitter-based spreading codes for mobiles. It is aimed at improving the throughput and message delay delivery when traffic ...