Affiliation: | Department of Telematics Engineering, University of Vigo, Spain. Email: jgd{at}det.uvigo.es, mlnores{at}det.uvigo.es, jose{at}det.uvigo.es, avilas{at}det.uvigo.es, rebeca{at}det.uvigo.es, agil{at}det.uvigo.es, yolanda{at}det.uvigo.es, mramos{at}det.uvigo.es |