[Copyright notice]

Copyright (c) 2012 by The Institute of Electrical and Electronics Engineers, Inc. All rights reserved. The papers in this book comprise the proceedings of the meeting mentioned on the cover and title page. They reflect the authors´ opinions and, in the interests of timely dissemination, are published as presented and without change. Their inclusion in this publication does not necessarily constitute endorsement by the editors, the Radio Electronics Association of Vietnam (REV), the IEEE Communication Society, or the Institute of Electrical and Electronics Engineers, Inc. Copyright and Reprint Permission: Abstracting is permitted with credit to the source. Libraries are permitted to photocopy beyond the limit of U.S. copyright law for private use of patrons those articles in this volume that carry a code at the bottom of the first page, provided the per-copy fee indicated in the code is paid through Copyright Clearance Center, 222 Rosewood Drive, Danvers, MA 01923. For other copying, reprint or republication permission, write to IEEE Copyrights Manager, IEEE Operations Center, 445 Hoes Lane, P.O. Box 1331, Piscataway, NJ 08854. IEEE Catalog Number: CFP 12ATC-ART. ISBN: 978-1-4673-4352-7. ISSN: 2162-1039.