“Interference Alignment Beamforming for Wireless Networks: from Algorithm to System Design”
Monday, Jan. 29, 1:00 PM
Larsen Hall Room 234
Dr. Yi Jiang is a professor in the Department of Communication Science and Engineering at Fudan University in Shanghai, China. He is an ECE Florida alumnus.
Abstract
It is well-known that the interference alignment (IA) beamforming can significantly improve the degree of freedom of a wireless network over the traditional MIMO techniques. But to realize the theoretical benefits of the interference alignment, we should study the problem from a system perspective. That is, the IA beamforming should be combined with other aspects of the communication systems, including link selection, power allocation, rate adaptation, etc. In this talk, we first introduce a novel algorithm that can achieve not only interference alignment beamforming, but link selection and power allocation, in a distributed manner. We then propose a MAC design to support the interference alignment algorithm along with other physical layer techniques. We also show the challenges of channel acquisition in the presence of concurrent transmission due to the interference alignment. We present an elegant solution based on the Zadoff-Chu sequences. Initial lab tests have verified the effectiveness of our system design.
Biography
Yi Jiang received the B.S. degree in electrical engineering and information science from the University of Science and Technology of China, Hefei, China, in 2001, and the M.S. and Ph.D. degrees in electrical engineering from the University of Florida, Gainesville, FL, in 2003 and 2005, respectively.
In 2005, he was a Research Consultant with Information Science Technologies Inc., Fort Collins, CO. From 2005 to 2007, he was a Post-Doctoral Researcher with the University of Colorado, Boulder CO. He moved to San Diego, CA, in 2007, and worked for multiple companies, including NextWave Wireless from 2007 to 2008, Qualcomm Corporate Research and Development from 2008 to 2012, IAA Incorporated from 2012 to 2013, and Silvus Technologies from 2013 to 2016. From 2014 to 2016, he was a part-time Researcher with the Electrical Engineering Department, University of California at Los Angeles, Los Angeles, CA. USA. He moved back to China for a professor position at Fudan University in September 2016. He has authored over 50 papers, 8 approved patents, and one book. Many papers are highly cited.