Liberal Malaina Fidel

Liberal Malaina, Fidel

Datos personales

Liberal Malaina, Fidel

Dirección: Alda. de Urquijo s/n. C.P.: 48013. Bilbao
Despacho: 3A18
Email: fidel.liberal@ehu.es
Teléfono: +34 94 601 4129
Fax: +34 94 601 4259

 

Títulos académicos

Titulación universitaria

Título: Ingeniería de Telecomunicación
Intensificación: Telemática
Centro: Universidad del País Vasco
Fecha de obtención: 2001

Doctorado

Título del programa: Tecnologías de la Información Electrónica y Control
Fecha de obtención DEA: 2003
Título de la tesis: Propuesta de un modelo y una metodología para la gestión de la calidad en los servicios de telecomunicación
Fecha de obtención: 2005

Artículos

An ANFIS-based Hybrid Quality Prediction Model for H.264 Video over UMTS Networks

Autoría:
Asiya Khan, Lingfen Sun, Emmanuel Ifeachor, Jose Oscar Fajardo, Fidel Liberal
Año:
2010
Revista:
2010 Annual IEEE International Communications Quality and Reliability (CQR) Workshop. Vancouver, Canada. June 8-10, 2010
Descripción:

<span lang="en">The Quality of Service (QoS) of Universal Mobile Telecommunication System (UMTS) is severely affected by the losses occurring in Radio Link Control (RLC) due to high error probability. Therefore, for any video quality prediction model, it is important to model the radio-link loss behaviour appropriately. In addition, video content has an impact on video quality under same network conditions. The aim of this paper is to present video quality prediction models for objective, non-intrusive prediction of H.264 encoded video for all content types combining parameters both in the physical and application layer over UMTS networks. In order to characterize the QoS level, a learning model based on Adaptive Neural Fuzzy Inference System (ANFIS) is proposed to predict the video quality in terms of the Mean Opinion Score (MOS). ANFIS is well suited for video quality prediction over error prone and bandwidth restricted UMTS as it combines the advantages of neural networks and fuzzy systems. The loss models considered are 2-state Markov models with variable Mean Burst Lengths (MBLs) depicting the various UMTS scenarios. The proposed model is trained with a combination of physical and application layer parameters and validated with unseen dataset. Preliminary results show that good prediction accuracy was obtained from the model. The work should help in the development of a reference-free video prediction model and Quality of Service (QoS) control methods for video over UMTS networks.</span>

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