Indoor Positioning and Interference Management for Modern Wireless Networks

Tuesday, March 3, 2015 -
4:00pm to 5:00pm
CS 1240

Speaker Name: 

Swarun Kumar

Speaker Institution: 

Massachusetts Institute of Technology



Cookies Location: 

CS 1240


Wireless networks are everywhere around us and form a
big part of our everyday lives. In this talk, I will present my work
on achieving the key goals of modern wireless networks. First, can we
use the ubiquitous Wi-Fi infrastructure around us to deliver new
services, beyond communication? In particular, this talk focuses on
indoor positioning, a service that has grabbed the attention of the
industry. While GPS has revolutionized outdoor navigation, it does not
work indoors. Past work that has explored this problem is either
impractical with errors of several meters, or advocates complete
overhaul of the infrastructure with massive antenna-array access
points that do not exist on consumer devices. Inspired by radar
systems, I developed Ubicarse, the first purely-software indoor
positioning system for existing Wi-Fi devices that achieves the tens
of cm in positioning accuracy.

Second, perhaps our biggest expectation from modern wireless networks
is faster communication speeds. However, state-of-the-art Wi-Fi
networks continue to struggle in crowded environments — airports and
hotel lobbies. The core reason is interference — Wi-Fi access points
today avoid transmitting at the same time on the same frequency, since
they would otherwise interfere with each other. I describe OpenRF, a
novel system that enables today’s Wi-Fi access points to directly
combat this interference and demonstrate significantly faster
data-rates for real applications.

Bio: Swarun Kumar is a Ph.D Candidate at MIT working on wireless
networks and systems. Over his Ph.D, he designed and built new systems
that leverage a deep understanding of wireless signals to design and
build faster wireless networks and deliver new services. His work has
been featured as research highlights in the Communications of the ACM
(CACM) and the International Journal of Robotics Research
(IJRR). Swarun is a recipient of the Jacobs presidential fellowship
at MIT and the President of India gold medal at Indian Institute of
Technology (IIT) Madras. Swarun received his masters degree from MIT
and undergraduate degree from IIT Madras.