Events Calendar

Two New Approaches to Massive MIMO

Speaker: Ralf Mueller, FAU Erlangen-Nuremberg

Talk Title: Two New Approaches to Massive MIMO

Abstract: Massive MIMO systems are promising for solving the wireless bottleneck. Still some fundamental issues in massive MIMO are open. In this talk two of them are addressed: 1) The channel estimation problem which is often referred to as "pilot contamination". 2) The cost scaling problem which arises from the massive use of analog hardware. Concerning 1), a system design based on power-controlled handover and non-linear channel estimation is proposed. In particular, the signal subspaces occupied by intercell and intracell users are blindly separated by means of singular value decomposition. Concerning 2), a new hardware structure to generate RF signals is proposed. This structure avoids mixers and the need for linear power amplifiers. It consists of a single RF oscillator common to all antenna elements that is driving varying imaginary impedances and makes use of the law of large numbers for impedance matching.

Biography: Prof. Müller was born in Schwabach, Germany, 1970. He received the Dipl.-Ing. and Dr.-Ing. degree with distinction from the Friedrich-Alexander-University (FAU) Erlangen-Nuremberg in 1996 and 1999, respectively. From 2000 to 2004, he directed a research group at Vienna Telecommunications Research Center in Vienna, Austria and taught as an adjunct professor at Vienna University of Technology. In 2005, he was appointment full professor at the Department of Electronics and Telecommunications at the Norwegian University of Science and Technology in Trondheim, Norway. In 2013, he joined the Institute for Digital Communications at FAU Erlangen-Nuremberg in Erlangen, Germany. He held visiting appointments at Princeton University, US, Institute Eurecom, France, University of Melbourne, Australia, University of Oulu, Finland, National University of Singapore, Babes-Bolyai University, Cluj-Napoca, Romania, Kyoto University, Japan, FAU Erlangen-Nuremberg, Germany, and Munich University of Technology.

Prof. Müller received the Leonard G. Abraham Prize (jointly with Sergio Verdú) for the paper "Design and analysis of low-complexity interference mitigation on vector channels'' from the IEEE Communications Society. He was presented awards for his dissertation "Power and bandwidth efficiency of multiuser systems with random spreading'' by the Vodafone Foundation for Mobile Communications and the German Information Technology Society (ITG). Moreover, he received the ITG award for the paper "A random matrix model for communication via antenna arrays,'' as well as the Philipp-Reis Award (jointly with Robert Fischer). Prof. Müller served as an associate editor for the IEEE Transactions on Information Theory from 2003 to 2006


Host: Giuseppe Caire, caire@usc.edu, EEB 540, x04683

Location: Hughes Aircraft Electrical Engineering Center (EEB) - 248

Audiences: Everyone Is Invited

Contact: Gerrielyn Ramos