Yi Qian presently holds the position of Assistant Professor in the Department of Electrical and Computer Engineering at the University of Puerto Rico at Mayaguez. He is on the editorial board for WPMC and has written and reviewed many journal articles for the IEEE. He is the General Chair, for the International Symposium on Wireless Pervasive Computing '2007, to be held in Puerto Rico, as well as the Technical Program Co-Chair for Globecom 2006 and WIA'2006 (Workshop on Information Assurance). Peter Muller is a Research Staff Member for IBM Research at Zurich Research Laboratory, Switzerland. Hsiao-Hwa Chen is the Director of the Institute of Communications Engineering at the National Sun Yat-Sen University in Taiwan. Dr. Chen received his BSc and MSc degrees from Zhejiang University, China, and his PhD degree from the University of Oulu, Finland, in 1982, 1985 and 1990, respectively, all in Electrical Engineering. He has written two books for Wiley and is the Editor for Asia & the Pacific for the Wiley journal Wireless Communications & Mobile Computing, as well as the Third Chief Editor for Wiley's International Journal of Communication Systems (IJCS).