Tan Zhang (张檀)

Department of Computer Sciences

University of Wisconsin-Madison

Email: tzhang {at} cs.wisc.edu

My CV: PDF



About Me

I am a sixth year Ph.D candidate from the Computer Sciences Department at UW-Madison. I work in the Wisconsin Wireless and NetworkinG Systems (WiNGS) Lab under the guidance of Prof. Suman Banerjee. My research has been recently awarded by a Google PhD Fellowship in Mobile Systems (2015 - 2017).

I have a broad research interest in the area of wireless networking and mobile systems. My thesis work focuses on designing the next-generation wireless networks based on dynamic spectrum access. I have explored this concept via networking over the TV whitespace spectrum (unused TV channels) for various demanding wireless applications. Examples include providing robust Internet connectivity to metro buses at a city scale, supporting high-speed femto-cell networks, and providing intelligent video surveillance functions over wide-area. I have also explored low-cost and scalable mechanisms to monitor the availability of wireless spectrum at a large scale. This research thread includes a vehicular measurement framework on metro buses and a smartphone based spectrum sensing platform.

In my spare time, I enjoy many outdoor activities such as skiing, hiking, biking, kayaking, and scuba diving.

Publication

Conference proceeding

[pdf]
[slides]
[App]
[demo]
A Wireless Spectrum Analyzer in Your Pocket
Tan Zhang, Ashish Patro, Ning Leng, Suman Banerjee
ACM HotMobile 2015
WiSense Android App is available here (Featured as a geek tool for power users in Google Play)
Patches to enable spectral scan in Ath9k driver is available here
[pdf]
[slides]
[data]
A Vehicle-based Measurement Framework for Enhancing Whitespace Spectrum Databases
Tan Zhang, Ning Leng, Suman Banerjee
ACM MobiCom 2014 (Awarded third place of best presentation)
Web front-end to visualize data is available at here
Participated in Spectrum Observatory Project led by Microsoft to collect measurements over 4GHz spectral band.
[pdf]
[slides]
[demo]
Enhancing Vehicular Internet Connectivity using Whitespaces, Heterogeneity, and a Scouting Radio
Tan Zhang, Sayandeep Sen, Suman Banerjee
ACM MobiSys 2014
[pdf]
[slides]
Inaccurate Spectrum Databases? Public Transit to its Rescue!
Tan Zhang, Suman Banerjee
ACM HotNets 2013
[pdf]
[slides]
Scout: An Asymmetric Vehicular Network Design over TV Whitespaces
Tan Zhang, Sayandeep Sen, Suman Banerjee
ACM HotMobile 2013
[pdf] A Dual Technology Femto Cell Architecture for Robust Communication using Whitespaces
Sayandeep Sen, Tan Zhang, Milind Buddhikot, Suman Banerjee, Dragan Samardzija, Susan Walker
IEEE DySPAN, 2012 (Awarded best paper)

Journal

[pdf] Design and Implementation of an ``Approximate'' Communication System for Wireless Media Applications
Sayandeep Sen, Tan Zhang, Syed Gilani, Shreesha Srinath, Steve Schmitt, Suman Banerjee, Sateesh Addepalli
IEEE/ACM Transactions on Networking

Poster and Demo

[pdf]
[poster]
V-Scope: An Opportunistic Wardriving Approach to Augmenting TV Whitespace Databases (poster)
Tan Zhang, Suman Banerjee
ACM MobiCom 2013 (Won first place in ACM student research competition)
[pdf]
[demo]
Video Streaming using Whitespace Spectrum for Vehicular Applications (video demo)
Tan Zhang, Sayandeep Sen, Suman Banerjee
ACM MobiSys 2013

Patent

[pdf] Method and Apparatus for Wireless Communication using A Short-range Base Station with Multiple Radio Interfaces
of Different Technologies

Milind M Buddhikot, Sayandeep Sen, Dragan Samardzija, Tan Zhang, Susan Walker
US Patent Publication No: US20140105134 A1

Technical Report

[pdf] Sip: Speculative Insertion Policy for High Performance Caching
Hongil Yoon, Tan Zhang, Mikko H Lipasti
TR-1676, UW Computer Science Department, 2010

Internships

Fall 2014: University College London, UK
Worked with Prof.Kyle Jamieson on deploying an indoor wireless video surveillance system over the unlicensed ISM band.
Summer 2014: Microsoft Research, Redmond, USA
Worked with Victor Bahl and Aakanksha Chowdhery on building a real-time vision analytic system over TV whitespace networks.
Summer 2012: Bell Labs, Alcatel-Lucent, NJ, USA
Worked with Milind M. Buddhikot on deploying long-distance wireless backhauling networks over TV whitespaces.
Summer 2011: Bell Labs, Alcatel-Lucent, NJ, USA
Worked with Milind M. Buddhikot on developing whitespace radio prototypes and indoor whitespace femtocells for offloading cellular traffic.
 
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