Research

Refereed Journal Articles:

Z. Shen, J. G. Andrews, and B. L. Evans, "Asymptotic Empirical Eigenvalue Distribution for MIMO Systems with Large Transmit Antenna Arrays," submitted to IEEE Communications Letters, Oct. 11, 2004
Z. Shen, R. W. Heath, Jr., J. G. Andrews, and B. L. Evans, "Space-Time Water-filling for Composite MIMO Fading Channels," submitted to IEEE Transactions on Wireless Communications, Aug. 12, 2004.
Z. Shen, J. G. Andrews, and B. L. Evans, "Adaptive Resource Allocation in Multiuser OFDM Systems with Proportional Fairness," to appear in IEEE Transactions on Wireless Communications.

Refereed Conference Papers:

Z. Shen, R. W. Heath, Jr., J. G. Andrews, and B. L. Evans, "Comparison of Space-Time Water-filling and Spatial Water-filling for MIMO Fading Channels," to appear in Proc. IEEE Int. Global Communications Conf., Nov. 29-Dec. 3, 2004, Dallas, Texas, USA.
M. Ding, Z. Shen, and B. L. Evans, "An Achievable Performance Upper Bound for Discrete Multitone Equalization," to appear in Proc. IEEE Int. Global Communications Conf., Nov. 29-Dec. 3, 2004, Dallas, Texas, USA.
I. C. Wong, Z. Shen, J. G. Andrews, and B. L. Evans, "A Low Complexity Algorithm for Proportional Resource Allocation in OFDMA Systems," to appear in Proc. IEEE Int. Work. Signal Processing Systems, Oct. 13-15, 2004, Austin, Texas, USA.
Z. Shen, J. G. Andrews, and B. L. Evans, "Optimal Power Allocation in Multiuser OFDM Systems," in Proc. IEEE Global Comm. Conf., vol. 1, pp. 337-341, Dec. 1-5, 2003, San Francisco, CA, USA.
Z. Shen, J. G. Andrews, and B. L. Evans, "Short Range Wireless Channel Prediction Using Local Information," in Proc. IEEE Asilomar Conf. on Signals, Systems, and Computers, vol. 1, pp. 1147-1151, Nov. 9-12, 2003, Pacific Grove, CA, USA.

Presentations:

Oct. 22, 2004, "Multiuser OFDM with Variable Rate Constraints," lecture at the Second Annual WNCG Wireless Networking Symposium, Austin, TX.
Sep. 30, 2004, "Equalization," guest lecture for EE 381V: Advanced Wireless -- Modulation and Multiple Access.
Jan. 28, 2004, "Multiuser Orthogonal Frequency Division Multiplexing for High-Speed Wireless Communication Systems," Ph.D. qualifying presentation, The University of Texas at Austin, Austin, TX.
Nov. 11, 2003, "Short Range Wireless Channel Prediction Using Local Information," poster presentation at 37th Asilomar conference, Pacific Grove, CA.
Oct. 22, 2003, "Dynamic Resource Allocation in Multiuser OFDM Systems," poster presentation at 1st WNCG Wireless Networking Symposium, Austin, TX.

Softwares:

G. Arslan, M. Ding, B. Lu, M. Milosevic, Z. Shen, and B. L. Evans, "UT Austin Multicarrier Equalizer Design Toolbox for Matlab," Embedded Signal Processing Laboratory, The University of Texas at Austin.

Course Projects:

Wirelss Local Area Networks (WLAN): Proposal Presentation Final Report
VDSL system simulation using Agilent ADS: Briefing Survey Presentation Final Report
Adaptive equalization in pertone DSL structures: Final Report
Adaptive resource allocation in multiuser OFDM systems: Final Report