User-centric analysis of perceived QoS in 4G IP mobile/wireless networks. - Faouzi Bader; Carolina Pinart; Christiana Christophi; Eleni Tsiakkouri; Ivan Ganchev; Vasilis Friderikos; Christos Bohoris; Luís M. Correia; Lucio Studer Ferreira (PIMRC, 2003)