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Hui Liu


Hui Liu
Professor
Communications and Signal Processing
307P EEB
Box 352500
University of Washington
Seattle, WA 98195
Phone: (206) 543-2054
E-mail: hliu@ee.washington.edu

University of Texas at Austin, 1995 Ph.D. EE
Portland State University, 1992 M.S. EE
Fudan University, Shanghai, China, 1988 B.S. EE


Biosketch

Hui Liu received a B.S. in 1988 from Fudan University, Shanghai, China, an M.S. in 1992 from Portland State University, Portland, Oregon, and a Ph.D. degree in 1995 from the University of Texas at Austin, all in electrical engineering. He held the position of assistant professor at the Department of Electrical Engineering at University of Virginia from September 1995 to July 1998. Dr. Liu was the chief scientist at Cwill Telecom, Inc., and was one of the principal designers of the TD-SCDMA technologies. He founded Adaptix in 2000 and pioneered the development of OFDMA-based mobile broadband networks (mobile WiMAX and 3G LTE). Dr. Liu is the creator of CMMB transmission technology which enables the delivery of mobile TV services to more than a billion of population in different regions of the world. Dr. Liu is currently a full professor at the Department of Electrical Engineering, University of Washington. His research interests include broadband wireless networks, array signal processing, DSP and VLSI applications, and multimedia signal processing.

Dr. Liu has published more than 40 journal articles and has over 30 awarded or pending patents. He is the author of "OFDM-Based Broadband Wireless Networks – Design and Optimization," Wiley 2005, and "Signal Processing Applications in CDMA Communications," Artech House, 2000. Dr. Liu's activities for the IEEE Communications Society include membership on several technical committees and serving as an editor for the IEEE Transactions in Communications. He was selected Fellow of IEEE for contributions to global standards for broadband cellular and mobile broadcasting. He is the General Chairman for the 2005 Asilomar conference on Signals, Systems, and Computers. He is a recipient of 1997 National Science Foundation (NSF) CAREER Award, the Gold Prize Patent Award in China, and 2000 Office of Naval Research (ONR) Young Investigator Award.

Honors

Research Interests

Broadband wireless networks, DSP and VLSI for communications, and multimedia signal processing.

Wireless Information Technology Lab: http://danube.ee.washington.edu/

Current Projects:

OFDMA-based broadband mobile networks

Structured dirty paper precoder

Multi-rate, multi-length LDPC codes

WiMAX system-on-a-chip

Selected Publications

Hongxiang Li and Hui Liu, "Schemes for Multicarrier Broadcast and Unicast Hybrid Systems," IEEE Trans on Wireless Communications, accepted, 2007

Younsun Kim and Hui Liu, "Infrastructure Relay Transmission with Cooperative MIMO," IEEE Transactions on Vehicular Technology, accepted, Oct. 2007

Bin Liu, Hui Liu, and Sumit Roy, "DPC-based Hierarchical Broadcasting: Design and Implementation," IEEE Transactions on Vehicular Technology, accepted, Oct. 2007

Hongxiang Li and Hui Liu, "An Analysis on Uplink OFDMA Optimality," IEEE Trans on Wireless Communications, vol 6, no. 8 pp 2972-2983, August 2007

Lei Yang, Hui Liu, and Richard Shi, "Construction and VLSI implementation of capacity-approaching low-error-floor multi-rate LDPC codes," IEEE Trans. Circuits and Systems, vol. 53, no. 4, pp 892-904, April 2006

Didem Kivanc, Guoqing Li, and Hui Liu, "Computationally efficient bandwidth allocation and power control for an OFDMA system," IEEE Journal on Selected Areas in Communications, pp 1150-1158, November 2003

G. Xing, M. Shen, and H. Liu, "Frequency offset and I/Q imbalance compensation for direct-conversion receivers," IEEE Trans. Wireless Commun., vol. 4, no. 2, pp. 673-680, March 2005

Manyuan Shen, Guoqing Li, and H. Liu, "Effect of Traffic Channel Configuration on OFDMA Uplink Performance," IEEE Trans. Wireless Communications, vol. 4, no. 4, pp 1901-1913, July 2005

B. Suard, G. Xu, H. Liu and T. Kailath, "Channel capacity of space-division-multiple-access schemes," IEEE Trans. on Information Theory, IT-44 (4), 1998

H. Liu and U. Tureli, "A high efficiency carrier offset estimator for OFDM communications,'' IEEE Communications Letters, CL-2 (4), 1998

H. Liu and G. Xu, "A subspace method for signature waveform estimation in synchronous CDMA systems," IEEE Trans. on Communications, COM-44(10), pages 1346-1354, November 1996

G. Xu, H. Liu, L. Tong, and T. Kailath, ``A Least-Squares Approach to Blind Channel Identification," IEEE Trans. on Signal Processing, SP-43(12), pages 2982-2993, December 1995.

http://www.ee.washington.edu/research/wit/publications_f.html

Recent Conference Papers

Lei Yang, Hui Liu, and Richard Shi, "A Cycle Elimination Method for Constructing VLSI Oriented LDPC Codes," the 62nd IEEE Vehicular Technology Conference, Dallas, TX, USA from September 25 to 28, 2005

Guoqing Li and Hui liu, "On the Optimality of Downlink OFDMA MIMO Systems," accepted, the 62nd IEEE Vehicular Technology Conference, Dallas, TX, USA from September 25 to 28, 2005

Manyuan Shen, Guoqing Li, and Hui Liu, "Design tradeoffs in OFDMA traffic channels," International Conference on Acosutics, Speech, and Signal Processing, May 17-21, 2004 Montreal Canada.

Guoqing Li and Hui Liu, "On the capacity of broadband relay networks," Proc. 39th Asilomar Conf. Signals, Systems, and Computers, vol. 1, pages 1318-1322, Nov. 2004

Guanbin Xing, Manyuan Shen, and Hui Liu, "An LDPC-based terrestrial multimedia broadcasting system: design, implementation, and experimental results," International Conference on Acosutics, Speech, and Signal Processing, May 17-21, 2004 Montreal Canada.

Manyuan Shen, Huaning Niu, Hui Liu, and James Ritcey, "Finite precision implementation of LDPC coded M-ary modulation over wireless channels, pp 114-118, Proc. 38th Asilomar Conf. Signals, Systems, and Computers, Nov.2003

Guoqing Li, and Hui Liu, "Downlink dynamic resource allocation for multicell OFDMA system," pp 517-521, Proc. 38th Asilomar Conf. Signals, Systems, and Computers, Nov. 2003

Books

OFDM-Based Broadband Wireless Networks - Design and Optimization, Wiley, 2005.

Signal Processing Applications in CDMA Communications, Artech House, 2000.

Patents

H. Liu et al, "Channel allocation in broadband OFDMA/SDMA networks," U.S. Patent 6,870,808

X. Liu, H. Liu, K. Li and W. Zhang, "OFDMA with adaptive subcarrier-cluster configuration and selective loading," U.S. Patent 6,947,748

H. Liu, "Method and Apparatus for Fast Modulation in Synchronous CDMA Communications," U.S. Patent 5,864,548

H. Liu and G. Xu, "Methods for channel estimation and signal detection of CDMA signals," U.S. Patent 5,905,721

H. Liu, G. Xu, and P. Liu, "Method and Apparatus for Carrier Recovery and Compensation in Spread Spectrum Wireless Communications," U.S. Patent 5,982,809

H. Liu, G. Xu and P. Liu, "Method for timing recovery and compensation in time-division-duplex wireless communications," U.S. Patent 6, 470,057

H. Liu and G. Xu, "Smart Antenna CDMA Wireless Communication Systems," U.S. Patent 6,980,527

Active Grants

National Science Foundation, "Design and prototyping for network convergence," Sept 2008 – August 2011

Intel Research, "Hybrid cellular for broadcasting and multiple-access," July 2007 – June 2010

"Dirty paper precoder prototype development and demonstration," UW TGIF

Recent Graduate Students

Ufuk Tureli, Department of Electrical Engineering, University of Virginia, Ph.D. 2000, (now a professor at Stevens Institute of Technology)

Hujun Yin, Department of Electrical Engineering, University of Washington, Ph.D. 2002, (now with Intel)

Didem Kivanc, Department of Electrical Engineering, University of Washington, Ph.D. 2005

Guanbin Xing, Department of Electrical Engineering, University of Washington, Ph.D. 2003 (now with Adaptix)

Manyuan Shen, Department of Electrical Engineering, University of Washington, Ph.D. 2004 (now with Marvell)

Guoqing Li, Department of Electrical Engineering, University of Washington, Ph.D. 2004 (now with Intel)

Bin Liu, Department of Electrical Engineering, University of Washington, Ph.D. 2007 (now with Broadcom)

Hongxiang Li, Department of Electrical Engineering, University of Washington, Ph.D. 2008 (now a professor at North Dakota State Univ.)

Editorships

Editor for the IEEE Transactions in Communications

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