Experience          Selected Publications          SCITL/Software          Teaching         


Associate Professor

Department of EECS, The University of Tennessee at Knoxville / Aug. 2014 -

Adjunct Assistant/Associate Professor

Department of Electrical Engineering, Columbia University / Aug. 2011 - Dec. 2013

Member of Technical Staff-Research

AT&T Labs-Research, Florham Park (Bedminster), NJ / Oct. 2007 - Jul. 2014

Postdoctoral Researcher

EPFL, Lausanne, Switzerland / Sep. 2005 - Sep. 2007


Cornell University, Ithaca, NY

Ph.D. Electrical and Computer Engineering / Aug. 2005

Tsinghua University, Beijing, China

Bachelor of Engineering (BE), Electronic Engineering / Jul. 2000


AT&T Key Contributor Award

For technical contribution in AT&T / 2010, 2011, 2013

Liu-Memorial Award, Cornell University

For excellence in graduate study and research / 2004

Five Selected Publications

Characterizing the rate-region of the (4,3,3) exact-repair regenerating codes

C. Tian, IEEE Journal on Secelected Areas in Communications, May 2014.

Layered exact-repair regenerating codes via embedded erasure correction and block designs

C. Tian, B. Sasidharan, V. Aggarwal, P. Vijay Kumar and V. Vaishampayan, accepted, IEEE Trans. Inform. Theory.

Optimality and approximate optimality of source-channel separation in networks

C. Tian, J. Chen, S. N. Diggavi and S. Shamai, IEEE Trans. Inform. Theory, Feb. 2014

The achievable distortion region of sending a bivariate Gaussian source on the Gaussian broadcast channel

C. Tian, S. N. Diggavi and S. Shamai, IEEE Trans. Inform. Theory, Oct. 2011

Approximating the Gaussian multiple description rate region under symmetric distortion constraints

C. Tian, S. Mohajer and S. N. Diggavi, IEEE Trans. Inform. Theory, Aug. 2009

To selected publications by topic, or chronological publication list, or google scholar profile.

SCITL: Solutions of Computed Information-Theorectic Limits

We recently developed a computational approach to identify and prove information-theoretical limits, whose potential is yet to be fully explored. Here is a collection of results on several data storage and communication problems. Contributions are welcome. If you have a burning question and think this approach may be helpful, please contact me.

To see the results on the SCITL page.

Open-Source Software

Quantcast QFS with flexible erasure codes

Quantcast QFS is designed to better accommodate the map-reduce framework by taking into account of the more recent hardware architecture. It originally supports on up to 3 parities in erasure code setting. In this project, we add more flexible erasure codes to allow more than 3 parities.

C library: repair-efficient erasure codes

Implmentation of a set of regenerating codes and locally repairable codes for distributed data storage.


The University of Tennessee Knoxville

ECE 342: Analog Communication, Amplitude Modulation and Frequency Modulation / Fall 2014, Spring 2015

Columbia University

ELEN E6884: Topics in Data Compression / Spring 2011
ELEN E6718: Algebraic Coding Theory / Fall 2011, 2012, 2013
ELEN E6712: Communication Theory / Spring 2013

Ecole Polytechnique Federale de Lausanne

IC-62: Source Coding Theory and Practice / Winter 2006

Services and Membership

Associate Editor

IEEE Signal Processing Letters / Feb. 2012-Feb. 2014

IEEE Senior Member

Elected Feb. 2012

Conference TPC Member

ChinaCom-08, NetCod-12, NVMW-14, ISIT-15