Liang-Liang Xie

Liang-Liang Xie

Professor
Department of Electrical and Computer Engineering
University of Waterloo
200 University Avenue West
Waterloo, Ontario, N2L 3G1
Canada

Telephone: 1-519-888-4567, ext. 33697

Fax: 1-519-746-3077

Email: llxie at uwaterloo dot ca

Education

I received the B.S. degree in mathematics from Shandong University and the Ph.D. degree in control theory from the Chinese Academy of Sciences in 1995 and 1999, respectively. I did postdoctoral research at the Automatic Control Group , Linköping University, Sweden during 1999-2000 and at the Coordinated Science Laboratory, University of Illinois at Urbana-Champaign, USA during 2000-2002.

Selected Publications

Molecular Biology and Machine Learning

Systems Biology and Systems Medicine

Network Information Theory and Wireless Relay Networks

X. Wu and L.-L. Xie, `` A unified relay framework with both D-F and C-F relay nodes''. IEEE Transactions on Information Theory, vol.60, no.1, pp.586-604, January 2014.
X. Wu and L.-L. Xie, `` On the optimal compressions in the compress-and-forward relay schemes''. IEEE Transactions on Information Theory, vol.59, no.5, pp.2613-2628, May 2013.
X. Wu and L.-L. Xie, `` Codebook information does not reduce output entropy when rate is above capacity''. Presented at the 48th Annual Allerton Conference on Communication, Control, and Computing, Monticello, Illinois, September 29- October 1, 2010.
L.-L. Xie, `` A greedy omnidirectional relay scheme''. In Proc. of the 11th Canadian Workshop on Information Theory, Ottawa, Canada, May 13-15, 2009.
X. Wu and L.-L. Xie, `` Asymptotic Equipartition Property of output when rate is above capacity''. Submitted to IEEE Transactions on Information Theory, August 2009.
L.-L. Xie, `` Omnidirectional relay in wireless networks''. Submitted to IEEE Transactions on Information Theory, November 2008. Revised, November 2010.
L.-L. Xie, `` On information-theoretic scaling laws for wireless networks''. Submitted to IEEE Transactions on Information Theory, September 2008. Revised, July 2009.
J. Ponniah and L.-L. Xie, `` An achievable rate region for the two-way two-relay channel''. In Proc. of 2008 IEEE International Symposium on Information Theory, Toronto, Canada, July 6-11, 2008.
L.-L. Xie, `` Omnidirectional relay in wireless networks''. In Proc. of 2008 IEEE International Symposium on Information Theory, Toronto, Canada, July 6-11, 2008.
J. Ghaderi, L.-L. Xie and X. Shen, `` Hierarchical cooperation in ad hoc networks: optimal clustering and achievable throughput''. IEEE Transactions on Information Theory, vol.55, no.8, pp.3425-3436, August 2009.
L.-L. Xie, `` Network coding and random binning for multi-user channels''. In Proc. of the 10th Canadian Workshop on Information Theory, pp.85-88, Edmonton, Alberta, Canada, June 6-8, 2007.
L.-L. Xie and P. R. Kumar, `` Multi-source, multi-destination, multi-relay wireless networks''. IEEE Transactions on Information Theory, Special Issue on Models, Theory and Codes for Relaying and Cooperation in Communication Networks, vol.53, no.10, pp.3586-3595, October 2007.
L.-L. Xie and P. R. Kumar, `` On the path-loss attenuation regime for positive cost and linear scaling of transport capacity in wireless networks''. Joint Special Issue of IEEE Transactions on Information Theory and IEEE/ACM Transactions on Networking on Networking and Information Theory, vol.52, no.6, pp.2313-2328, June 2006.
L.-L. Xie and P. R. Kumar, `` An achievable rate for the multiple-level relay channel''. IEEE Transactions on Information Theory, vol.51, pp.1348-1358, April 2005. [ Conference Version]
F. Xue, L.-L. Xie and P. R. Kumar, `` The transport capacity of wireless networks over fading channels''. IEEE Transactions on Information Theory, vol.51, pp.834-847, March 2005.
L.-L. Xie and P. R. Kumar, `` Wireless network information theory''. Advances in Network Information Theory, P. Gupta, G. Kramer and A. van Wijngaarden editors, DIMACS, American Mathematical Society, Providence, RI, pp.151-158, 2004.
L.-L. Xie and P. R. Kumar, `` A Network Information Theory for Wireless Communication: Scaling Laws and Optimal Operation''. IEEE Transactions on Information Theory, vol.50, pp.748-767, May 2004.

Feedback Capability and Adaptive Control

C. Li, L.-L. Xie and L. Guo, "Robust stability of discrete-time adaptive nonlinear control". In Proc. 16th IFAC World Congress, Prague, July 2005.
C. Li and L.-L. Xie, "On robust stability of discrete-time adaptive nonlinear control". Systems & Control Letters, vol.55, no.6, pp.452-458, 2006.
L.-L. Xie and L. Guo, "How much Uncertainty can be Dealt with by Feedback?". IEEE Transactions on Automatic Control, vol.45, pp.2203-2217, 2000.
L.-L. Xie and L. Guo, ``Adaptive control of discrete-time nonlinear systems with structural uncertainties", in Lectures on Systems, Control, and Information, pp.49-90, AMS/IP, 2000.
L.-L. Xie and L. Guo, "Fundamental limitations of discrete-time adaptive nonlinear control". IEEE Transactions on Automatic Control, vol.44, pp.1777-1782, 1999.
L.-L. Xie and L. Guo, "Adaptive control of a class of discrete-time affine nonlinear systems". Systems & Control Letters, vol.35, pp.201-206, 1998.
L. Guo and L.-L. Xie, "An asymptotically optimal non-parametric adaptive controller". Science in China (Series E), vol.30, pp.250-257, 2000. [ Chinese version ]

System Identification and Mathematical Modeling

L.-L. Xie and L. Ljung, "Asymptotic variance expressions for estimated frequency functions". IEEE Transactions on Automatic Control, vol.46, pp.1887-1899, 2001.
L.-L. Xie and L. Ljung, "Variance expressions for spectra estimated using Auto-Regressions". Journal of Econometrics, 118, pp.247-256, 2004.
L.-L. Xie and L. Ljung, "Estimate physical parameters by black-box modeling", in Proc. 21st Chinese Control Conference, pp.673-677, August, 2002.
L.-L. Xie and L. Ljung, "Aspects on the interpretation of disturbances in system identification", in the 39th IEEE Conference on Decision and Control, December 2000.

(Complete list)

Current Graduate Students

Shuyue Wang
Yuxi Zhang

Past Graduate Students

Ammar Alshamrani (PhD, Co-supervised with Prof. Xuemin Shen)
Xiaoyu Chu (MASc)
Liang Dong (MASc)
Mingjun Gao (MASc)
Yingzhe He (MASc)
Yan Jiao (MASc)
Hengameh Keshavarz (PhD, Co-supervised with Prof. Ravi Mazumdar)
Chanying Li (MASc, Co-supervised with Prof. Lei Guo)
Xinyue Liu (MASc)
Zheng Ma (MASc)
Mingxi Nan (MASc)
Jonathan Ponniah (MASc)
Karen Shi (MASc, Co-supervised with Prof. Pin-Han Ho)
Ying Wang (MASc)
Shuning Wang (MASc)
Suhuan Wang (MASc)
Xiugang Wu (PhD)
Zirui Wu (MASc)
Han Xu (MASc)
Haolin Zhang (MASc)
Jie Zhang (MASc, Co-supervised with Prof. En-hui Yang)
Ran Zhang (PhD, Co-supervised with Prof. Xuemin Shen)
Xiaoxia Zhang (PhD, Co-supervised with Prof. Xuemin Shen)
Xinsheng Zhou (PhD, Co-supervised with Prof. Xuemin Shen)

Teaching

ECE 207 Signals and Systems (F'11, S'13, S'15)
ECE 316 Probability Theory and Random Processes (W'08, S'10, S'11, S'12, W'13)
ECE 316 Probability Theory and Statistics (S'17, W'18, S'18, S'19)
ECE 318 Communication Systems (W'09)
ECE 342 Signals and Systems (S'06, W'07)
ECE 391 Engineering Design Concepts (F'08, W'09, F'10)
ECE 498B Engineering Design Project (W'14)
ECE 605 Queueing Systems (F'07)
ECE 700-8 Engineering Analysis of Living Cells (W'19)
ECE 710-12 Network Information Theory (F'06, W'08, S'09, S'10, W'12, W'14, S'15, W'17)