Power Controlled Feedback and Training for Two-way MIMO Channels

SPEAKER: Ashu Sabharwal
Rice UniversityABSTRACT: Interactive communication systems (cellular, WiFi etc) consist of transceivers, not simply transmitters and receivers. This naturally leads to a two-way channel, where both nodes in a communication system share the system resources, and use multi-round protocols to facilitate communication. Surprisingly, our understanding of this basic communication construct is rather limited.In this talk, we will study the two-way fading channel to understand noise corrupted feedback in communication systems. The noise in the feedback links leads to mismatch in the shared knowledge of the transmitter and the receiver, leading to potential outages in transmission. In the process of analyzing two-way fading channels, we show that two new concepts of power-controlled feedback and power-controlled training feedback naturally come up.BIO: Ashutosh Sabharwal received his B.Tech from Indian Institute of Technology, New Delhi in 1993. He graduated from The Ohio State University with a MS in 1995 and PhD in 1999. Currently he is an Assistant Professor at Rice, where he also the Director of Center for Multimedia Communication. His main research interests are information theoretic foundations, protocols and platforms for high performance wireless networks.HOST: Urbashi Mitra, ubli@usc.edu, EEB 540, x04667

Location: Hughes Aircraft Electrical Engineering Center (EEB) - B18

Audiences: Everyone Is Invited

Contact: Gerrielyn Ramos