The common feature of next generation wireless communication systems will be the convergence of multimedia services such as speech, audio, video, image and data. The selection of a generic air interface for next generation wireless systems will be of great importance to meet the needs of high data rates and new services. This talk will present some critical technologies for air interface which would be employed in next generation wireless systems, i.e., orthogonal frequency division multiplexing (OFDM) multicarrier transmission, efficient multiple access, and multi-input multi-output (MIMO) diversity techniques. Also, this talk will give an overview of two major on-going beyond-3G standards: 3GPP Long Term Evolution (LTE) and 3GPP2 Ultra Mobile Broadband (UMB).

Dr. Xiaoyu Hu received the B.Eng. and M.Eng. degrees from Huazhong University of Science and Technology, Wuhan, China, in 1997 and 2000, respectively, and the Ph.D. degree from National University of Singapore, Singapore, in 2005. Currently he is a Research Associate with Dept of Electrical and Computer Engineering, Stevens Institute of Technology, Hoboken, NJ, USA. From 2000 to 2001, he was a Telecommunication Engineer with Guangdong Telecommunication Co. Ltd., Guangzhou, China. From 2001 to 2005, he was a Research Assistant at National University of Singapore and Institute for Infocomm Research, Singapore. In 2005, he was a Software Engineer at Motorola Co. Ltd, Singapore. Dr. Hu joined the Stevens Institute of Technology in Feb. 2006. His research interests include wireless systems and spread spectrum, cross layer design (PHY/MAC) for wireless networks, MC-CDMA, OFDM, space-time coding, MIMO, beamforming, synchronization, channel Estimation and multiuser detection.