Full-duplex Wireless: From Experiments to Theory

Event Date: April 11, 2013
Speaker: Professor Ashutosh Sabharwal
Speaker Affiliation: Rice University, Houston, TX
Sponsor: Communications, Networking, Signal and Image Processing
Time: 10:30 AM
Location: MSEE 239
Contact Name: Professor David Love
Contact Phone: (765) 496-6797
Contact Email: djlove@purdue.edu

In the last few years, multiple research groups (including the group at Rice) have reported the feasibility of short-range full-duplex wireless, i.e. simultaneous transmission and reception of wireless signals in the same frequency band. Furthermore, antenna designs at Rice have pushed the full-duplex transmission ranges to beyond 150 meters and have thus established the feasibility of full-duplex in several scenarios of practical interest. In this talk, we will first discuss our experiment-driven approach to understand the bottlenecks in increasing rate and range of full-duplex communications. The modeling captures the performance of both passive and active cancellation mechanisms used in full-duplex implementations. Finally, we will discuss our ongoing work in leveraging full-duplex capabilities at the infrastructure nodes to support half-duplex mobile nodes.

Rice Collaborators: Melissa Duarte, Achaleshwar Sahai, Evan Everett and Jingwen Bai.



Ashutosh Sabharwal is a Professor in the Department of Electrical and Computer Engineering at Rice University. His research interests are in wireless networks, spanning theoretical foundations, protocols and experimental systems. He is the founder of the WARP project (http://warp.rice.edu), which enables high-performance clean-slate prototyping of wireless networks, and is now in use in more than 125 organizations worldwide.