ICSNC 2012 The Seventh International Conference on Systems and Networks Communications ISBN: 978-1-61208-231-8 November 18-23, 2012 Lisbon, Portugal ICSNC 2012 Editors Eugen Borcoci, University Politehnica of Bucarest, Romania Sathiamoorthy Manoharan, University of Auckland, New Zealand 1 / 242