Visit ShanghaiTech University | 中文 | How to find us
HOME > News and Events > Events
Signal Processing for the Emerging Quaternion-Valued Wireless Communication Systems
Date: 2016/3/23             Browse: 568

Signal Processing for the Emerging Quaternion-Valued Wireless Communication Systems

Speaker: Wei Liu

Time: Mar 23, 4:30pm - 5:30pm.

Location: Room 310, Teaching Center


Quaternion-valued wireless communication systems have been studied in the past. Although progress has been made in this promising area, a crucial missing link is lack of effective and efficient quaternion-valued signal processing algorithms for channel equalization and beamforming. With most recent developments in quaternion-valued signal processing, in this work, we fill the gap to solve the problem by studying two quaternion-valued adaptive algorithms: one is the reference signal based quaternion-valued least mean square (QLMS) algorithm and the other one is the quaternion-valued constant modulus algorithm (QCMA). The quaternion-valued Wiener solution for possible block-based calculation is also derived. Simulation results are provided to show the working of the system.


Dr Wei Liu received his B.Sc. in 1996 and L.L.B. in 1997, both from Peking University, China, M.Phil. from University of Hong Kong, in 2001, and Ph.D. in 2003 from the School of Electronics and Computer Science, University of Southampton, UK. He later worked as a postdoc at Imperial College London. Since September 2005, he has been with the Department of Electronic and Electrical Engineering, University of Sheffield, UK, first as a lecturer, and then a senior lecturer. His research interests are in sensor array signal processing, blind signal processing, multirate signal processing and their various applications in radar, sonar, wireless communications, etc. He has now published more than 180 journal and conference papers, three book chapters, and a research monograph about wideband beamforming (``Wideband Beamforming: Concepts and Techniques'', John Wiley & Sons, March 2010). He is a senior member of IEEE, an elected member of the Digital Signal Processing Technical Committee of the IEEE Circuits and Systems Society, and currently an associate editor for IEEE Trans. Signal Processing and an editorial board member of the journal Frontiers of Information Technology & Electronic Engineering. (Personal website: 

SIST-Seminar 16020