The College of Engineering at the University of Illinois at Chicago invites you to the 2005 Paul M. Chung Distinguished Lecture Series

Wireless Systems Current and Future Challenges

	Dr. David E. Borth Corporate Vice President and Chief Technology Officer, Government & Enterprise Mobility Solutions Motorola Inc. Schaumburg, IL 60196 Tuesday, August 30, 2005 Lecture Center D4 4:00 p.m.

 
Broadband digital wireless systems have been discussed in the engineering literature for at least the past ten years. Indeed during this same period of time, we have seen the implementation of a number of different types of systems point-to-point systems operating in the LMDS and MMDS bands, terrestrial audio (DAB) and video (DVB) systems for broadcast applications, and wireless LAN systems.  Most of these systems have employed fairly simple modulation/coding/antenna systems.
 
Within the past four years, several new types of  broadband wireless systems have been deployed in experimental field trials that include very powerful channel coding technologies (turbo and low density parity check (LDPC) codes) combined with adaptive modulation methods (OFDM, broadband CDMA) and adaptive antenna array technology (MIMO, TxAA, SDMA, STC).  Over the next 12-18 months, however, several types of new commercial wireless systems are expected to be widely deployed that will make use of these types of technologies.  In this presentation, two of these systems will be discussed: the mobile broadband OFDM system now being standardized in IEEE 802.16e and the next generation wireless LAN now being standardized in IEEE 802.11n.  Several of the current challenges associated with the design and realization of these systems will be discussed.  Finally, some of the future technical challenges in wireless systems will be described.
 
David Borth has over 25 years of experience in advanced wireless technology research and development at Motorola.  He is a Member of the National Academy of Engineering, a Fellow of the IEEE, and a Dan Noble Fellow at Motorola (Motorolas highest technical award).  He has been awarded 31 patents and is the author/co-author of numerous journal and conference papers and five book chapters.
 
He received his B.S., M.S., and Ph.D. in Electrical Engineering from the University of Illinois at Urbana-Champaign in 1974, 1975, and 1979 respectively.  He is also the recipient of the Distinguished Alumnus Award from the University of Illinois Electrical and Computer Engineering Alumni Association (Urbana).