1. SIAE MICROELETTRONICA,Research and Development Dep.,Cologno Monzese,MI,Italy
2. Univ. of L'Aquila,Dep. of Industrial and Information Engineering and Economics,L'Aquila,Italy
3. Univ. of Calabria,Dep. of Computer Eng., Modeling, Electronics and Systems,Rende,CS,Italy
4. Politecnico di Milano,Dipartimento di Elettronica, Informazione e Bioingegneria,Milano,Italy