Copyright 2022 - TSR - Tratamiento de la Señal y Radiocomunicaciones

Alain MARTINEZ 

Alain Martínez received the M.S. Degree in Telecommunications Engineering from the University of the Basque Country, Spain, in 2007. After having worked at SUPELEC, France, as a Marie Curie fellowship holder, in 2009 he joined the TSR (Radiocommunications and Signal Processing) research group at the Department of Electronics and Telecommunications of the University of the Basque Country. His research interests focused on several aspects of Digital Video Broadcasting. He was involved in the development of a system to allow the remote use of lab facilities for the study of the different parameters and quality of the signal for the DVB T standard.

He is currently working for Atos in Madrid.

Ruth SANCHO 

Ruth Sancho received the BSE degree in Telecommunications from the University of the Basque Country, Spain in 2007. From 2007 to 2009 she worked for different enterprises. In September 2009 she came back to TSR Research, where she is worked as a researcher.

She participated in the development of a software-based DVB-T/H test receiver and a DVB-T2 transmitter and receiver.

Ana MURGA 

Ana Murga received the M.S. Degree in Telecommunications Engineering from the University of the Basque Country, Spain, in 2009. In 2007 she joined the TSR (Radiocommunications and Signal Processing) research group at the Department of Electronics and Telecommunications of the University of the Basque Country.

She was a postgraduate researcher from September 2009 to April 2010. Her interests focused on the study of the feasibility of local coverage DRM (Digital Radio Mondiale) networks using the 26 MHz band.

Susana LÓPEZ

PhD. Thesis Title

A study for optimizing the field strength prediction of the digital services for ground-wave propagation in the MW band

 

Abstract

Emerging digital radio systems developed for their use in the LW, MW and SW frequencies take advantage of the excellent propagation conditions at these frequencies. Besides, they provide a high audio quality and they incorporate data services. The IBOC/HD Radio and DRM systems were accepted by the international committees and agencies and have been adopted as a standard by many countries. The numerous experimental networks to verify the operation of these systems, the increasing trading emissions and the requests promoted by the ITU for further exploration of the propagation below 30 MHz demonstrate the revitalization of these bands.

These systems, due to their digital nature, require a very high degree of coverage, and thus, a high accuracy in planning tools. The reason is that a signal level below the threshold necessary for good reception implies a poor quality in the analogue systems, but a lost of the service in the digital ones. To achieve the required accuracy it is necessary a deep analysis of the ground-wave propagation channel and the spatial variability of the signal under several reception conditions.

This thesis provides a method for predicting field strength level for ground-wave propagation in the MW band for digital services planning.

Firstly, this thesis makes contributions related to the influence of several factors in the field strength variability in the MW band. Then, a method for field strength prediction, which provides more accurate results than the existing methods for the analogue services, is proposed. The proposed method is composed of a point-to-point model and a point-to-area model.

The studies described in this document have been performed at the University of the Basque Country (UPV/EHU). This institution is member of the international DRM Consortium, which is responsible for promoting the DRM standard. The TSR research group (Signal Processing and Radiocommunications research group) plays a very active role in the System Evaluation Group of the Technical Committee (SE/TC) of the DRM consortium for the validation of the system through field tests.