Abstract :
Copyright (c) 2008 by The Institute of Electrical and Electronics Engineers, Inc. All rights reserved. Copyright and Reprints Permission: Abstracting is permitted with credit to the source. Libraries are permitted to photocopy beyond the limits 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 the Copyright Clearance Center, 222 Rosewood Drive, Danvers, MA 01923.
