Communications with Limited and Delayed Feedback: Fundamental Performance-vs-Feedback Tradeoff
In many multiuser wireless communications, good feedback of channel state information (CSI) is a crucial ingredient that facilitates improved performance. While being useful, perfect feedback is generally hard and time-consuming to obtain. With this challenge as a starting point, in this talk we will address the simple yet elusive and fundamental question of ``HOW MUCH QUALITY of CSI feedback, AND WHEN, must one send to achieve a certain degrees-of-freedom (DoF) performance in specific settings of multiuser communications''.
Jinyuan Chen is currently a visiting scholar at Stanford University. He received the PhD degree from EURECOM/Telecom Paris Tech in 2013, the M.Sc. degree from Beijing University of Posts and Telecommunications in 2010, and the B.Sc. degree from Tianjin University in 2007. During July and August 2013, he was a visiting scholar at the University of California, Irvine. His industry experience includes doing internship at Ericsson in 2009. He was a recipient of Outstanding Graduate award and of Tsang Hin Chi scholarship. His research interests include network information theory, communication theory, interference management and limited feedback.